A fitness platform for where the Caribbean trains.
Lime is a coaching and gym-management platform built for individual Caribbean trainers and the gyms they work in. Locally rooted programming, regional payment rails, a Caribbean nutrition library, and three client archetypes — long-term members, seasonal clients, and tourists — designed in from the start.
Locally rooted, not localised.
The Caribbean nutrition library, beach and gully programming, and regional payment rails aren't translations of an American app — they're the spine of the product.
Three client lifecycles, one platform.
Long-term members, seasonal clients (Crop Over, new year), and tourists each have distinct onboarding, billing, and retention flows. The trainer experience handles all three from a single dashboard.
The trainer is the centre of gravity.
Trainers buy the platform; gyms come on as multi-trainer accounts. Marcus's reputation, content, and clients travel with him — Lime doesn't disintermediate the relationship.
The tourist arc closes back to the island.
A two-week visitor can become a remote subscriber, a returning seasonal client, and a referrer of group bookings. Each handoff is a designed moment, not a hope.
Five personas the prototype follows
The hook: what do you want?
One tap, almost no friction. Four emotional doors, each with a one-liner so no one picks the wrong one. The goal is the hook; everything that routes a person to the right experience happens in the quiet steps after. No account required yet — momentum first.
What brings you here?
Tourist training
Weight loss
Strength building
Full health management
Quick select, not a form.
Track-dependent tappable cards — never typed fields. This is the diagnostic that feels obvious rather than interrogating. Each tap reads as the app understanding you, not testing you. Shown here: the strength-building path (top) and the weight-loss path framed with care (below).
What does stronger look like for you?
Pick whatever fits. You can refine this with your trainer later.
What would feel like progress?
No numbers required here. Your trainer will help set anything specific, together.
The honest filter.
"When do you want to start?" is the one question that protects the trainer's time — not with a wall, but by letting people say plainly where they are. Someone exploring gets a lighter path and no trainer assigned. Someone ready signals it. For tourists, this step captures arrival and departure dates, since the whole value proposition depends on knowing the length of stay.
When do you want to start?
Be honest — there's no wrong answer. It just helps us point you the right way.
When are you here?
So we can shape your whole stay around it.
A starting point — only if you want.
The single screen that holds the sensitive inputs: starter photos, measurements, weight. Every field is optional and skippable, and skip is the prominent path. The framing makes clear these are best done with your trainer, which is both lower-friction and the healthier default. Most people will skip, and that's by design.
Want to mark a starting point?
Account, then a person.
The account step comes here — after four taps of investment, when the person is warm and far more likely to convert. Then the intake ends with a handoff to a real trainer, not more questions. For Full Health Management, one extra step: an invitation to add a herbalist to the care team. Everyone else sees the same number of taps.
Save your spot.
Create your account so we can match you with a trainer.
Meet Marcus.
Marcus Hinds
Your care team.
Marcus Hinds
Would you like a herbalist on your team?
Just exploring? No trainer yet.
When someone picks the lightest start option, they land on a vivid preview of the real product — a styled glimpse of the actual home dashboard, not a flat list of session titles. Enough warmth to feel the value, with a soft prompt to come back when ready. No trainer is assigned, no trainer time is spent. Readiness must be proven, either by asking a real question or committing through intake, before a trainer enters the picture.
Morning
Sunrise beach circuit
Build a lasting routine
This is what a few weeks in looks like. When you're ready for your own, a trainer is a tap away.
Aisha's home screen.
What she opens to each morning. Today's session leads, then the stats and goals tuned for a 14-day stay rather than a year-long membership.
Welcome back, Aisha
Sea swim & mobility
Marcus · Carlisle Bay · 45 min
To hit your 12-session goal, train Thursday and Saturday this week.
3 outdoor sessions
Train at 4 beaches
Locally rooted, for your stay.
Aisha's discover feed surfaces sessions tuned to where she is and how long she's there. Beach, gully, sea — the things she came here for.
Morning, Aisha
Sunrise beach circuit
Gully trail run
Sea swim & mobility
Sunset boardwalk yoga
For when she wants to add her own.
Aisha's trainer plan is the spine, but she can supplement on her own. Quick wins for a busy day, restorative work for the evening, something for the hotel room when it's raining.
Browse
From Marcus your trainer
Sunrise beach circuit
Strength foundation
Quick wins 15–30 min
Morning mobility reset
Hotel-room HIIT
Evening unwind flow
Outdoor classics
Sea swim & mobility
Gully trail run
Trending in Bridgetown
Sunset boardwalk yoga
Sand & sled finisher
Tap, see, book.
Single-session purchase flow tuned for tourists and intermittent clients — no long-term membership required, paid in local currency.
Sunrise beach circuit
with Marcus · 60 min · intermediate
Strength and conditioning on sand. Bodyweight blocks, sled drags with the boat trailer, finisher in the shallows. Bring water and a towel.
You're booked, Aisha
Tomorrow · 6:00 am · paid $35 BBD
A plan that tastes like the place.
Aisha's nutrition plan is built from a Caribbean food library, not an American macro app. Underneath, bush medicine remedies from Esme — the herbalist on her care team — pair with the day's training.
Your 14-day plan
Saltfish & breadfruit
Grilled snapper & provisions
Coconut water & mango
Pelau
Lemongrass & ginger tea
Aloe vera water
Soursop leaf tea
The morning of.
Tomorrow's session card surfaces with location, weather, what to bring. Plus the running thread with her trainer.
Sunrise beach circuit
Marcus · Brighton Beach
Bring the crew.
Aisha invites her friends Sasha and Demi — arriving mid-stay from Toronto — to join her at a beach session. One tourist becomes three.
Saturday beach circuit
Group rate $25 BBD per person (regular $35)
Aisha (you)
Sasha Khoury
Demi Marin
A close, and an invitation.
Day 14. A small celebration, an honest note from her trainer, and the moment that turns a two-week tourist into a remote subscriber — or a returning seasonal client.
Two weeks, well lived.
Marcus Hinds
Keep training from London
Plan your next visit
A zine, not a dashboard.
Aisha's progress view is shaped like a small travel publication — a record of her trip that happens to include fitness. The same view evolves from a "this week in Bridgetown" living document into the looking-back-fondly piece by day 14. Marcus is felt throughout, as a person who was there.
Bridgetown,
days one to fourteen.
The body, finding its rhythm.
Five sessions in six days. Brighton at sunrise, twice. The gully run on Tuesday morning that left her quieter for the rest of the day. A sea swim at Carlisle Bay that became the moment she stopped checking her watch underwater. By Friday, the alarm felt less like an interruption.
She arrived hesitant about the heat. By day three she'd stopped thinking about it. The body, as it tends to, adjusted faster than the mind did.
Three coasts, one cabana.
The map gets more pins as the week unfolds. Marcus mentioned Bathsheba for next week — east coast, where the swimming is wilder. He drew it on a napkin and she took a photo.
She stopped checking her watch underwater.
Small numbers, quiet shifts.
The fitness app version of a postcard. None of this needs to be big — it's a trip, not a training block.
Beaches, meals, found things.
twice
swam
ran
"The next week
is the good one."
Week two, sketched —
Sea swim & mobility
Information, her best weapon.
Renée's progress view shows the same data Marcus reads from, with one safety rail: difficult moments (plateaus, downward subjective trends) are paired with a note from him before she sees them. The default is concrete — exercise done, muscle groups worked, last month vs this month, lifetime goals. Optional dashboards live under "more views" rather than cluttering the home screen.
Renée Marshall
Where you've moved.
A simple comparison. April's averages on the left, May so far on the right.
Twelve weeks, three movements.
Deadlift
Back squat
Bench press
Where the work landed.
Sessions worked, by primary muscle group. The shape of a block, in one glance.
Goals you set in February.
Concrete fitness milestones from your first sessions with Marcus, fifteen months ago.
Deadlift bodyweight (140 lb)
Squat 1.5× bodyweight (210 lb)
5km run · under 28 minutes
"To feel strong at fifty."
Your broader health goal, tracked through quarterly conversations with Marcus rather than numbers.
Quarterly check-ins
"How strong do you feel — in your own body, on an ordinary Tuesday?"
More views, when you want them.
Additional dashboards you can switch on. Nothing is pushed — these wait until you ask.
Isolated exercise progress
Muscle-strength progress
Monthly time-stamps
Resting heart rate trend
Body composition
Marcus's week.
Sessions booked, open slots visible, and one Caribbean-specific signal: how many tourists are looking at his sessions right now.
A new client, with context.
When Aisha books, Marcus doesn't just see a slot filling. He sees the tourist, her stay, what she's after, and what she's already told the platform.
New booking · Sunrise beach circuit · tomorrow 6:00 am
Aisha Daniels
Tourist · 14-day stayRenée, read closely.
Twelve weeks of work, laid out as a quiet reading. Marcus sees what Renée has logged, what he's logged about her sessions, and a handful of observations the platform offers without prescribing. Below, what some other trainers do at this stage — gently, not as a hard sell.
Renée Marshall
The lifts, over twelve weeks.
Deadlift led the block — until the last three sessions, where it flattened. Squat and bench continue to climb.
A consistent twelve weeks.
Three sessions per week, missed two, made up one. Mix has stayed weighted toward strength, with a steady drip of mobility.
Effort climbing, mood softening.
RPE is what you've been logging during sessions. Wellness is Renée's own daily check-in. Both trends are honest and worth noticing.
Renée's deadlift has plateaued for three sessions while her reported effort has climbed to a sustained 9.
Her wellness check-ins have softened over the last fortnight, with a clear dip on the days following heavy sessions.
Sunday mobility has held steady at one session per week — light load, never missed.
At a similar moment, with similar clients.
Drawn from anonymised patterns across the Lime network. Not a recommendation — a window into how others have answered.
Some trainers introduce a deload week at 60–70% of working weight before pushing again.
A small group shifts one strength session to power work — speed-focused, lighter loads, similar movements.
A brief check-in conversation often surfaces sleep, stress, or life context the data alone can't.
Curious about something specific? Ask Lime to look closer.
Two paths, one call.
When Marcus plans Aisha's next deadlift session, Lime suggests two paths based on her last set. He picks the one that matches what he saw in the room, edits if needed, and sends. The trainer's judgement stays central.
Aisha Daniels
Conventional deadlift
- 3 × 5 at 100 lbs
- Add 2 × 8 RDLs at 75 lbs as accessory
- Hold tempo: 3-count eccentric
- 3 × 5 at 105 lbs
- Drop to 2 × 5 if last set looks heavy
- Skip RDLs · prioritise recovery
Plan from a Caribbean library.
Marcus assembles Aisha's two-week plan from a regional food library, not a generic macro database. The library is the differentiator — the editor is the everyday tool.
Week 1 · Aisha's meals
14-day · vegetarian-flexWhere the workouts live.
Marcus's own catalogue alongside Lime-curated regional collections — beach & outdoor, Crop Over Ready, tourist friendly. He selects, duplicates, assigns.
Sunrise beach circuit
Gully trail run
Sea swim & mobility
Crop over ready
Sunset boardwalk yoga
Strength foundation
Tomorrow, at a glance.
Who's booked, where, and the day-of tools Marcus actually needs: weather updates, location pins, group messages.
Sunrise beach circuit
Sea swim & mobility
Strength · indoor
Bush medicine, kept honest.
A separate role on the platform. Esme prescribes from a Bajan bush medicine library her clients can use alongside their meals. Trainers can suggest, but only Esme can prescribe. Localised by region — Bajan here, Trini or Jamaican elsewhere.
Esme Pinder
Your clients this week
Aisha Daniels
Renée Marshall
Shamar Clarke
Jordan Thompson
Bajan bush library
What's intentional, what's placeholder.
A reader's guide for stakeholders. Where decisions have been made, where assumptions are flagged, and what's deferred to later iterations.
What this prototype is, and isn't
This is a designed walkthrough, not functioning software. Every screen is hand-built static markup intended to make the product tangible enough to react to. It exists to support partnership conversations (notably with Instafit246), gather feedback from trainers, and scope a build team. It is not a clickable app and the buttons do not do anything.
The current arc follows one persona — Aisha, a 14-day tourist from London — across client mobile, trainer desktop, and a new herbalist practitioner role. Long-term member and seasonal (Crop Over) flows are queued for a later iteration.
New in v3.3
- Sign-up & intake flow. The front door, now chapter II. A four-step shape shared across all tracks: the hook (four goal cards with honest one-liners), track-dependent quick-select (tappable, never typed), an honest readiness filter ("when do you want to start?"), and an optional-skippable starting-point screen, ending in a handoff to a real trainer rather than more questions.
- The four emotional hooks. Tourist Training, Weight Loss, Strength Building, Full Health Management. Goals are the hook; the routing to tourist / seasonal / long-term machinery happens quietly in the steps after.
- Care rails on sensitive inputs. Photos, weight, and measurements live on a single optional screen where skip is the prominent path. The weight-loss quick-select avoids "lose 10 lbs" as the lead option, framing numeric targets as something set with the trainer. Photos are client-owned, trainer-visible only by permission, herbalist-visible only if explicitly granted.
- The readiness filter. "When do you want to start?" protects the trainer's time without a wall — people self-select by saying where they are. "Just exploring" routes to a preview with no trainer assigned. A trainer only enters once readiness is proven (asking a real question, or committing through intake).
- Account timing and equal burden. Account creation comes after four taps of investment, when conversion is warmest. Full Health Management feels no heavier at intake than Tourist — it unlocks more after commitment. The only upfront difference is the optional "add a herbalist" care-team step.
- Tourist date capture. The tourist readiness step collects arrival and departure dates, since the entire tourist value proposition depends on knowing the length of stay.
New in v3.2
- Aisha's trip zine. The client-side progress view for the tourist persona. Long-form scrolling mobile layout shaped like a small travel publication — drop caps, pull quotes, a hand-drawn map, day-by-day log entries that fill in as the trip unfolds. The same view evolves: living document during the stay, looking-back-fondly piece on day 14. Marcus is present throughout as a person who was there, not as the platform's voice.
- Renée's long-term progress view. The client-side progress view for the long-term member. Concrete by default — last month vs. this month, exercise charts, muscle-group bar chart, lifetime fitness goals against the milestones she set with Marcus on day one, and quarterly check-ins on her broader "feel strong at fifty" health goal. Plateaus and difficult moments are paired with a note from Marcus before she sees them — the data is hers, the interpretation of harder moments is collaborative.
- "More views" library. Optional dashboards Renée can toggle on (isolated exercise progress, muscle-strength balance, monthly time-stamps, resting heart rate, body composition). Off by default. Nothing is pushed; she opts in when she's ready.
Two clients, one skeleton
Aisha's zine and Renée's progress view share the same underlying components — a header that announces the time horizon, a "current state" summary at the top, a series of data sections, a closing moment that points to what's next, and a consistent navigation pattern. The visual treatment of those components is radically different because the two clients are at radically different moments in their relationship with training. Aisha is on holiday and her view is a souvenir; Renée has been training for fifteen months and her view is a working document.
This is the point: the same product can hold both, because the structure underneath is shared. A future "self-training" or "athlete" persona would draw from the same skeleton with its own surface treatment. Vacationer is the warm, expressive end of the spectrum. Long-term is the calm, informational end. Both are honest to the people they serve.
New in v3.1
- Trainer's client-progress dashboard. A per-client deep read, not a roster roll-up. Renée Marshall, a long-term member at week 12 of a strength block, carries this view. Strength curves (deadlift plateaued, squat and bench still climbing), a 12-week attendance grid, session-mix donut, and two subjective trends — RPE that Marcus enters and a daily wellness check-in Renée has opted into.
- "What Lime sees" observations panel. Three plain-statement observations followed by a question — never a recommendation. The platform notices; the trainer interprets.
- "What some trainers do here" cards. Soft, Amazon-style recommendations drawn from anonymised network patterns. Framed as "what others have answered," never as what Marcus should do. Percentages are illustrative.
- "Ask Lime" — optional, after the data. A quiet input field after everything else, with four example prompts. Marcus drives what gets surfaced; Lime never volunteers prescriptive insights up front.
- Editorial charts. Thin-stroke SVG line charts in teal, with coral reserved for the plateau callout. No glowing dashboard aesthetics. Serif numerals for headline figures, italic Fraunces for axis labels and section eyebrows.
New in v3
- Goal pacing on the client dashboard. Aisha's home screen now shows direct, math-honest pacing for her stay goal ("To hit your 12-session goal, train Thursday and Saturday"). Behind pace turns coral; on pace turns teal. Process-based goal for the tourist persona; longer-stay clients would get body comp or strength milestones instead.
- Progress planning for trainers. When Marcus plans Aisha's next deadlift, Lime suggests two branching paths — conservative (+5 lbs) and progressive (+10 lbs) — with the criteria for each clearly stated. Marcus chooses, edits, sends. The platform supports the call; the trainer makes it.
- The herbalist as a separate role. Bush medicine prescription is gated to a practitioner role (Esme Pinder, placeholder). Marcus can suggest but not prescribe. Library is regionally localised — Bajan here, Trini or Jamaican in those markets. The boundary protects both trainers and clients from medical claims neither party is qualified to make.
- Editorial sidebar. Reframed as five chapters in a walkthrough rather than a generic feature list. Roman numerals in italic serif, coral accents, chapter framing borrowed from print publication.
- Sharing metadata. Favicon (teal dot), Open Graph and Twitter card tags, OG image, and meta description. Previews well in iMessage, LinkedIn, WhatsApp, Slack, X.
What's placeholder
- Renée Marshall's progression data. All 12 weeks of lifts, attendance patterns, RPE, and wellness scores are fictional but internally consistent. The plateau on deadlift is a deliberate narrative hook for the "what Lime sees" panel.
- The trainer-network percentages. "41% of trainers" and "22% of trainers" are illustrative. A production build would need a real cohort to draw these from — and would need to be careful about what gets shared, anonymised, and surfaced as a pattern.
- Esme Pinder. A placeholder name for the herbalist persona. Bajan-feeling but invented. Replace with a real practitioner you know — or step into the role yourself given your herbalism training.
- Pricing throughout. The $35 BBD per session, $25 group rate, $45/month remote training, and load increments (95→100→105 lbs) are illustrative. They have not been pressure-tested against local willingness-to-pay, trainer-margin math, or Aisha's actual training history.
- The bush medicine library. Items are real Bajan traditions (lemongrass, soursop leaf, aloe, cerasee, sea moss, bay rum, black sage), but the library is a starter list, not a vetted clinical reference. A production build would need an actual practitioner to authorise its contents.
- The Caribbean food library content. Items mix Bajan (cou-cou, breadfruit, callaloo) and broader Caribbean (pelau, doubles). A production build would structure the library by island and region.
- The "142 Lime-curated workouts" figure. An invented number. The deeper question — how much content Lime curates itself vs. enabling trainers to publish into shared collections — is unresolved.
- The workouts themselves. No proprietary sequences from Instafit246's trainer are used. Workout names and structures are generic.
- The "Keep training from London" subscription. Strategically interesting model — turning tourists into remote subscribers — but pricing, revenue split, and product depth are all open.
What's intentional
- Three client lifecycles, designed in from day one. Long-term, seasonal, tourist. The dashboard, billing, and retention flows differ per archetype. Tourist is shown here; the others are queued.
- The herbalist as a gated role. Plant medicine in a fitness app is a real differentiator and a real liability if done badly. Separating prescription from suggestion, gating it to a qualified practitioner, and keeping the library scoped to traditional everyday remedies (rather than condition-specific dosing) keeps the feature honest.
- Direct language with clients on goals. No softening: when she's behind pace, the platform tells her exactly what to do. Caribbean trainers can warm the tone in their messages; the dashboard itself stays clear.
- The trainer's judgement remains central in progress planning. Two suggested paths, not one auto-applied recommendation. The platform earns its keep by surfacing both options clearly with the criteria for each — Marcus decides.
- Multi-currency from the start. Prices appear in $BBD; EC dollar, USD, and JMD would be handled at build time. Local payment rails are a differentiator, not a roadmap item.
- Trainer is the primary buyer. Gyms come on as multi-trainer accounts. Marcus's content and clients travel with him; Lime does not disintermediate the trainer–client relationship.
- The brand "lime." Drawn from Caribbean liming — gathering with your people. Reframes fitness away from gym-grind toward community and rhythm. "L!ME" with an inverted exclamation is held as a possible refinement if competitor collisions emerge.
- Editorial aesthetic. Fraunces (serif) for display, Manrope for body, warm sand background. Aspires closer to Cereal Magazine or Aesop than to a typical fitness app.
What's queued
- Gym-admin multi-trainer view, with mentorship. Held intentionally for a later session. The thread to pick up: how head trainers or gym admins see their team's coaching patterns, support newer trainers, and develop the next generation — using the same "what some trainers do" substrate the client-progress dashboard now lays down.
- Crop Over 12-week seasonal arc. Date-targeted programming, pause/resume membership, the seasonal retention model.
- The self-training persona. A client without a trainer — different relationship to the data, different role for Lime's observations. The shared-skeleton approach should hold; the surface treatment is the open question.
- Herbalist's prescription editor. The view shows Esme's overview, but the actual prescription-building interface (what she sends to a client) is queued. Worth designing carefully given the safety considerations.
- Build team scoping. Team composition, cost ranges, and phased delivery plan. Held until the design direction is firmer.
Credits
Designed and built as a working prototype by Social Impact Design Studios in conversation with Instafit246. Workout sequences and proprietary content remain the property of the Instafit246 trainer. The persona of Marcus Hinds is a stand-in for the real trainer; Aisha, Sasha, Demi, and Esme are fictional.