A still mind.
Fast reactions.
A two-minute reaction warm-up before every game. Fresh drills each time, and a number you can watch, session over session.
iPhone and iPad · Private by design · No ads, no tracking
Two minutes, then a number
A fresh set of reaction drills, tuned to your sport, then a clean read on how you’re reacting today.
Built for the split second
Reaction time decides the first step, the save, the read. Stillfast makes warming it up a habit.
One tap, a new warm-up every time
One tap starts a short set of reaction drills — different every time, so it never becomes a memorized routine. Plus an endless Survival mode when you want to chase a score.
See your reaction numbers, session over session
Every drill is logged. Labs leads with your numbers — fastest reaction, weekly average, the trend line. Tap any drill for its full history, or export a clean report for your coach.
Your whole library, tuned to your sport
Every drill in one place. Filter to your sport, set your level or let a quick test find it, and warm up your game reading — or drop into Survival. Search it, reorder it, make it yours.
Everything in its place
Over twenty reaction drills
Simple Reaction, Go / No-Go, Peripheral Catch, Object Tracking, and more — across speed, choice, vision, tracking, memory, and sound. None play the same way twice.
Your sport, or not
Pick from a dozen sports for drills that match how you compete. Or choose Everyday for all-around sharpness. Change it anytime.
Survival mode
An endless challenge that ramps up until you miss. Chase your best, then beat it.
Playlists and reports
Save your favorites into playlists and pin them to your home screen. Export a clean report whenever you need one.
Never the same twice
Every warm-up is freshly shuffled. Predictability is the enemy of reaction training, so Stillfast designs it out. Link Apple Calendar and it reminds you before each game.
Yours, and only yours
Your profile, drills, and results live on your device and sync through your private iCloud. We don’t run servers that receive your data. No advertising. No third-party tracking. Export or delete everything, anytime, from inside the app.