πŸ‘‹ Built by one person, not a fitness company

Train solo. Coach others.
Grow together.

An AI training coach that actually adapts to your equipment, your injuries, and your real schedule β€” because generic templates and €50/hour trainers both failed the same way.

No credit card required Β· Swap, add and remove exercises β€” free for everyone
Upper Body Push
8 Exercises Β· Today
Week 1 Progress
3 of 4 workouts complete
πŸ”₯ 6 day streak
Best: 14 days
The Honest Story

I built this for myself first.

I'm not a fitness company. I'm one person who's spent years deep in data and AI β€” and got tired of the only two options everyone else has: pay a trainer €50 an hour, or download an app that hands you the exact same template as the last million people who signed up.

Neither one adapts. Templates don't know you tweaked your knee last week, or that you only have dumbbells today, or that you skipped three workouts and need the plan to actually respond to that β€” not just sit there unchanged, quietly judging you.

So I built the coach I actually wanted: one that asks the questions that matter, builds a real plan around the answers, and adjusts every week based on how training actually went. I used it on myself, every day, for months, before anyone else ever touched it.

Then a friend asked to try it. Then another. That's the only reason TrainArk exists as more than a personal project β€” it turned out I wasn't the only one who needed this.

No hype, no "AI-powered" buzzwords for their own sake β€” just a tool built by someone who trains with it every single day, now shared with anyone who needs the same thing.
Features

Everything a real training plan needs

Not a generic template. A plan that adapts to your equipment, experience, injuries, and schedule.

Chest

AI-Generated Plans

A full weekly training plan built from your intake β€” equipment, experience, injuries, and goals all factor in.

Swap, Add, Remove β€” Free

Don't like an exercise? Swap it. Editing your plan is basic functionality, not a paywall.

Home Mode

Can't make the gym? One tap swaps every gym exercise for an equivalent bodyweight move.

Built-In Timers

Automatic rest timers between sets, plus a session timer so you know how long a workout took.

Weekly Check-Ins

Rate how the week felt and your plan adapts β€” more volume when you're crushing it, more recovery when you're not.

Coach Tools

Full client management: assignment, scheduling, messaging, progress photos, and check-ins.

Community Feed

React to a friend's PR or streak with πŸ™ŒπŸ”₯πŸ’ͺ. Training sticks when someone's watching you show up.

Bilingual

Full English and German support, built in from day one β€” not bolted on later.

How it works

From sign-up to first workout in minutes

1

Tell us about you

A short intake covers your equipment, experience, injuries, and goals β€” the stuff that actually changes a plan.

2

Get your plan

AI builds a full week of training, scaled to your experience level and training days.

3

Train, log, adapt

Log workouts, check in weekly, and your plan evolves with you β€” no manual re-planning.

Not a Solo Grind

Fitness sticks when it's not just you and an app.

Every workout you log and every streak you hit shows up in a community feed. Friends react with πŸ™ŒπŸ”₯πŸ’ͺ when you hit a new personal best β€” small, real signals that someone noticed, which turn out to matter a lot more than another push notification.

This isn't a leaderboard built to gamify you into engagement metrics. It's the same thing that makes training with a friend better than training alone, just built into the app.

JM
Jonas M.
Hit a 6-day streak πŸ”₯
πŸ™Œ 4
SK
Sara K.
New PR: Bench Press 60kg
πŸ’ͺ 7
DA
David A.
Completed Week 4
πŸ”₯ 3
Two ways to train

Whichever side you're on, TrainArk fits

Independent Athletes

Train on your own terms

Get a real AI-built plan without hiring a coach β€” and full control to edit it as you go.

  • Personalized AI training plan
  • Free exercise editing (swap/add/remove)
  • Home Mode for no-gym days
  • Weekly check-in, plan adapts
  • Goal tracking & progress log
Join the Beta β†’
Coaches

Manage real clients, properly

Program assignment, scheduling, messaging, and client progress β€” replacing the spreadsheet-and-WhatsApp workflow.

  • Client program assignment
  • Session scheduling & calendar
  • Direct client messaging
  • Progress photos & measurements
  • Public coach profile (coming soon)
Register Your Interest β†’
Try it

Try the demo

The real app, already filled with made-up data. Tap around as much as you like β€” nothing you do here reaches a real account.

Pick one and the app opens right here, in a phone frame.

Pricing

Free to train. Pro to go further.

Editing your plan β€” swap, add, remove exercises β€” is free for everyone. Your weekly check-in is always saved: on the free tier TrainArk rebuilds the plan from it monthly, with Pro every week. Pro is also for generating new plans on demand.

Free

€0 / forever
Everything you need to train
  • A personalised AI plan, updated monthly
  • Swap, add & remove exercises
  • Add a whole new workout day
  • Home Mode bodyweight swaps
  • Rest & session timers
  • Nutrition targets calculated for you
  • Workout & streak reminders
  • Up to 3 active goals
Join the Beta
πŸ† First 50 founding members: Pro free, for life
Beta now open on iOS & Android

Join the beta

TrainArk is in beta on iOS and Android. Sign up and we'll email you the install links straight away β€” TestFlight on iPhone, two quick taps on Android. The first 50 founding members get TrainArk Pro free for life.

By joining, you agree that we may email you about TrainArk β€” a welcome email now with the beta install links, and news about TrainArk after that. You can unsubscribe from any of them in one click. We store your email and nothing else you didn't type. Privacy policy