Arnie · agentic coach · iOS beta

A fitness coach that remembers you.

Log meals, workouts, weight, and progress in the Arnie iOS beta. Arnie learns your patterns and coaches you with context.

Join the iOS beta  → See how it works ↓
Free while in beta · Installs via TestFlight in about 2 minutes
The Arnie iOS app — coach chat
Protein
132g / 180g
48g remaining
Weight
↓ 1.8 lb this week
Trend improving
Training
3 sessions
Next: upper body
Recovery
Sleep dipped
Keep dinner lighter
Pattern
Late dinners reduce next-day protein completion
Goal: lose fat
Protein target: 180g
Knee injury
Trains 4x/week
Late dinners
Weight trend ↓
Misses lunch on workdays
High-protein breakfasts
Push/pull/legs split
Sleep quality
Weekend overeating
Meal timing

Text it like a coach.

Say it like you'd text a friend. Arnie logs it and calls the next move.

input: plain language → structured log

Your logs become direction.

Arnie connects what you eat, how you train, and how your body responds.

signal.fusion: meals × training × recovery

It remembers what apps forget.

Goals, injuries, habits, patterns. All of it shapes how Arnie coaches you.

memory.graph: 61 attributes · retention ∞
coach.loop · waiting for your first log

Start with one log.

Text your first meal, workout, or weight check-in. Arnie will take it from there.

Join the iOS beta  → Free while in beta · Installs via TestFlight
Works where you are

Start in the iOS beta.

Telegram is live too, and iMessage and WhatsApp are next. The same Arnie, the same memory, wherever you text.

connected signal sources
Apple HealthWhoopOura FitbitHumeSteps SleepWeightRecovery
iOS Beta
Available now
Telegram
Available now
iMessage
Coming soon
WhatsApp
Coming soon
Join the iOS beta  →

Free while in beta · Installs via TestFlight

In good company

Where you already train.

Arnie is building affiliations with gyms like The Wright Fit, Equinox, 24 Hour Fitness, and Lifetime, and partnering with trainers who want Arnie working with their clients between sessions.

The Wright Fit Equinox 24 Hour Fitness Lifetime

Train clients? Get them early access →

Why Arnie

Not a tracker.
A coach.

Trackers store what happened. Arnie runs an agent on top of it, and tells you what to do next.

arnie · coaching agent ● live
memory.graphgoals, injuries, habits, preferences. Long horizon, never resets
signal.fusionmeals × training × sleep × recovery merged into one coaching context
pattern.enginesurfaces what repeats: "late dinners cut next day protein"
coach.loopproactive nudges, course corrections, and PR chases. It texts first
io.channelsplain language in, next moves out. iOS · Telegram · iMessage soon
Put it to work  →

Free while in beta · Installs via TestFlight

Beta access

Free while
in beta.

Full access. No card, no commitment. Just coach with us early.

Free during the beta
Installs via TestFlight in about 2 minutes
  • The full Arnie iOS app
  • Log meals and workouts in chat
  • Personalized coaching with memory
  • Progress tracking and pattern insights
  • Telegram available now
  • iMessage and WhatsApp coming soon
Join the iOS beta  →
FAQ

A few quick answers.

Arnie is a fitness and nutrition coach with memory. You log meals, workouts, weight, and progress, and Arnie uses your history to coach you with context.
Yes. Arnie is available now as an iOS beta app. Telegram is also supported.
MyFitnessPal is mainly a tracker. Arnie is a coach. It remembers your habits, notices patterns, and tells you what to do next.
ChatGPT can answer questions. Arnie is built around your ongoing fitness history, logs, reminders, progress, and accountability.
No. The iOS beta is the main app experience. Telegram is also available for users who want it.
No. You can start by logging in the app. Wearables and health data make Arnie more personalized over time.
Nothing. Arnie is free while in beta, full access, no card. Beta testers will hear first about anything that changes.
Tap any Join button on this page. It opens TestFlight, Apple's official beta app, and the install takes about two minutes.
Ready

Start with
one log.

Text your first meal, workout, or weight check-in. Arnie will take it from there.

Join the iOS beta  →

Free while in beta · Installs via TestFlight · or start on Telegram →