Stak Fit - Fitness Trainer

Train smarter, not harder. Video-guided workouts, custom plans, and muscle tracking. Free. No account needed.

No login. No subscription. No nonsense. Open the app, pick a workout, and go.

WORKOUTS THAT ACTUALLY GUIDE YOU Exercises come with a video demonstration so you always know exactly what you're doing and how to do it right. Three workout formats mean the app works however you like to train:

• HIIT — countdown timers drive you through each exercise. The clock keeps you honest. • Sets & Reps — log your weight and reps as you go, set by set. Watch your numbers climb week on week. • Count-Up — move at your own pace and tap to advance when you're ready. No pressure, all progress.

READY WHEN YOU ARE A full library of expert-designed workouts is built in from day one — no setup, no configuration. Browse by format or muscle group, tap to preview the full exercise list and videos, then start. Multi-week training plans let you add an entire programme to your diary in one tap, so you always know what's coming next.

MAKE IT YOURS Build your own exercises, design your own workouts, create your own plans. Everything you make can be shared with anyone via a simple link — they tap it, it opens straight in the app. No account needed on either side.

NOT SURE WHERE TO START? The random workout generator has you covered. Tell it which muscle groups you want to target, how long you have, and how many circuits you're up for. It builds a complete workout in seconds. Fresh sessions, zero thinking required.

SEE HOW FAR YOU'VE COME Your diary tracks every session — past and upcoming — in one clean calendar view. The home dashboard shows your streaks, weekly activity, and a full muscle group breakdown so you can see exactly what you've been working and what needs more attention.

Works fully offline. Exercises cache to your device after the first play, so nothing stands between you and your workout — not even a bad signal.

This is fitness without the friction.