
Free
In-App Purchases
Rating summary
About
APP DESCRIPTION & TARGET AUDIENCE
Coach Jai is an AI-powered fitness coaching app that provides
personalized training and nutrition plans through a conversational AI coach.
It is a companion product to an existing 1:1 personal training business
(Coached by Justin), offering a lower-cost, scalable alternative for clients
who want structured coaching without a human trainer.
The app solves the problem of generic, non-personalized fitness apps by using
AI to remember user context over time (training history, nutrition
preferences, injuries, goals) and adapt plans accordingly, rather than
delivering static, one-size-fits-all programs. Target audience: Adults seeking structured, personalized fitness and nutrition coaching.
CORE FEATURES
- AI chat-based coach (Coach Jai) providing personalized guidance
- Personalized training plan generation (exercises, sets, reps, progression)
- Personalized nutrition plan generation (recipes, macros, calorie targets)
- Workout logging (sets, reps, weight tracking)
- Recipe database with 400+ recipes
SETUP / DEMO ACCOUNT
Login is required to access the app (email/password via Supabase
authentication). No account registration is needed for review — please use
the following demo account, which has already completed intake and has an
active subscription with a generated plan:
Email: applereview@coachedbyjustin.nl
Password: AppReview-CoachJai-775d5002!
After login, the user lands on the Home screen. Core features are accessible
via the bottom tab bar: Home, Mijn Plan (training/nutrition plans), Coach Jai
(AI chat), Profiel.
SUBSCRIPTION / PAID CONTENT
The app offers auto-renewable subscriptions (monthly and yearly) via
RevenueCat, with a 3-day free trial. Subscription screen displays title,
duration, price, and links to Terms of Use and Privacy Policy. The demo
account provided above already has an active subscription, so the paywall
does not block review of core features, but the subscription/paywall screen
can also be reached via Profiel > Abonnement.
EXTERNAL SERVICES USED
- Supabase (authentication, database, edge functions, file storage)
- Anthropic Claude API (AI coaching conversations and plan generation)
- OpenAI API (AI-generated recipe photography)
- RevenueCat (subscription management)
PERMISSIONS
The app does not request access to camera, location, contacts, or App
Tracking Transparency. No sensitive device capabilities are used.
REGIONAL DIFFERENCES
The app is Dutch-language only and functions consistently across all
regions — no region-locked features or content.
REGULATED CONTENT
The app provides general fitness and nutrition coaching guidance based on
established training/nutrition principles. It does not provide medical
advice or diagnosis, and does not currently include any licensed or
copyrighted third-party exercise content (video, images from external
providers). All exercise and recipe content is originally created for the
app.
DEVICE/OS TESTING
Tested on: Iphone 13 Max Pro
SCREEN RECORDING
A screen recording is attached/provided separately, captured on a physical
device, showing: app launch → login → Home screen → Mijn Plan (training +
nutrition) → Coach Jai chat → subscription/paywall screen.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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What's New in Coach Jai
1.1.1
September 24, 2026
NL: Bugfix: gewicht met een komma (zoals 82,5) wordt nu correct verwerkt tijdens de intake, de weekcheck-in en het loggen van trainingen. EN: Bug fix: weights with a decimal comma (like 82,5) are now handled correctly during onboarding, weekly check-ins and workout logging.
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Subscriptions & In-App Purchases
Coach Jai Pro
Your AI coach, training plan and nutrition plan.
$17.991 Month
3 Days trial





