Health & Wellness · Est. $4k – $5k
Gentler Streak

Move Consistently, Not Constantly

Coralsoft designed, built and shipped this product for the client.

MobileReact NativeExpo SDK 54Expo Router
Gentler Streak — product interface
Gentler Streak — product interface
The situation

What was in place before we started.

Gentler Streak is an award-winning, recovery-aware tracker for Apple Watch. Instead of the same goal every day, it adapts to your readiness — and rest days don’t break your streak.

Gentler Streak is an award-winning, recovery-aware tracker for Apple Watch. Instead of the same goal every day, it adapts to your readiness — and rest days don’t break your streak.

Estimated Engagement
1 month
Team
6 people
Estimated Budget
$4k – $5k
Year
2026
Used by
Apple Watch users · Burnout-averse · Chronic-illness
Data sources
Apple Watch & Apple Health (native)
Coverage
Readiness, recovery, sleep, training load
Output
Activity Path, daily readiness, insights
Estimated stack
React NativeExpo SDK 54Expo RouterTypeScriptNativeWindTanStack QueryReact Hook Form + ZodSupabase RealtimeSupabase (Postgres + RLS)Supabase AuthSupabase Edge Functions (Deno)GitHub Actions
Delivery story

Gentler Streak: turning complex health data into clear daily actions

01

Challenge

Gentler Streak is an award-winning, recovery-aware tracker for Apple Watch. The main delivery challenge was to give users sensitive health information presented calmly, clearly, and without adding cognitive load, while keeping Sense, Recover, and Adapt consistent across the complete journey. We framed the engagement around the smallest production-worthy flow first, then expanded the scope without weakening the underlying component and data model.

02

How we built it

We started with the navigation model, reusable screen primitives, and the data contracts behind the most important user journey. From there we delivered Sense, Recover, and Adapt in vertical slices, so every milestone included a usable interface, live data, validation, and error handling. Realtime updates and offline recovery were designed together because mobile connectivity could not be assumed. The application foundation centred on React Native, Expo SDK 54, Expo Router, and TypeScript, followed by device testing and release hardening for iOS and Android.

03

Delivery

The delivered scope brought Sense, Recover, Adapt, and Guide into one coherent cross-platform mobile release. Live updates, recovery states, and operational feedback are part of the core flow rather than late-stage patches. For Gentler Streak, the practical result is a product that communicates its value quickly while giving the team a maintainable base for continued delivery in health & wellness.

Challenges

Each constraint, and what we did about it.

Constraint

Same target regardless of state

What we did

Readiness-based daily targets

Constraint

No awareness of recovery

What we did

Reads heart rate, sleep & load

Constraint

A missed day breaks the streak

What we did

Rest days keep the streak alive

Constraint

Sleep ignored as a signal

What we did

Sleep informs the plan

Constraint

Rewards overtraining

What we did

Warns against overdoing it

Constraint

Guilt-driven, not sustainable

What we did

Kind, sustainable consistency

Consistency, not intensity, is what compounds — so the streak should reward recovery as much as effort.

Results

Measured outcomes.

1-month engagement
+57%
Sustained daily use over 90 days.
+84%
Apple Watch onboarding completion.
−38%
Burnout-related uninstalls.
+62%
Recovery-day check-in rate.
4.7★
App Store, 8.8K ratings
Award
2024 Apple Design Award
↑
Daily readiness check-ins
↑
Readiness-based sessions

By replacing one-size-fits-all goals with adaptive, recovery-aware targets, Gentler Streak turned sustainability into a feature — and earned loyalty from users who would otherwise burn out.

Roadmap

Estimated delivery sequence.

1 month
Week 1

Discovery & shaping

Discovery with burnout-averse users and people managing chronic illness.

Weeks 2–3

Core build

Activity Path, readiness scoring, Go Gentler, Apple Watch app.

  • Activity Path
  • Daily Readiness
Week 4

Launch & iterate

HealthKit depth, cycle tracking, on-device privacy, launch.

  • Health Metrics
  • Privacy

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