Quick Reaction
Wait for the signal. Tap when it’s time. A simple exercise in timing.
A STASH STUDIO APP / ANDROID
FOCUS.
REACT.
REPEAT.
Meet Reaction Trainer. Four recreational reaction modes, short practice sessions, and a clear view of your own progress.
Android 8.0+ · Offline practice · No account
For current release and download information, contact the studio.
YOUR SESSION. YOUR PACE.
MAKE A MOMENT
FOR PRACTICE.
Use saved preferences for a Quick Start, build a session, or take on the daily challenge.
4Training modes
3–50Rounds per session
3Difficulty levels
0Accounts needed
Direction
Read the arrow and match it with a button or a swipe.
Color Reaction
Respond to your target color. Let the other signals pass.
Multi Reaction
Switch between arrows, taps, and holds in a sequence.
FOLLOW YOUR OWN RESULTS
YOUR PROGRESS.
IN PERSPECTIVE.
Look back at sessions, individual attempts, reaction-time averages, and accuracy. Follow daily challenge completions and your streak.
Compare results on the same device. Display, touch latency, and your environment can affect the numbers.
Personal bests
Track your best recorded times in Quick, Direction, and Color.
Practice your way
Choose Easy, Medium, or Hard. Adjust sound, haptics, appearance, and accessibility labels.
Keep it local
No ads, analytics, or sign-in. Training records stay in app-private storage; Android backup or device transfer may include them when enabled.
A SIMPLE ROUTINE
READY WHEN YOU ARE.
Pick your mode.
Choose the kind of reaction you want to practice and set a session length.
Follow the signal.
Find a comfortable place to focus, then tap, swipe, or hold as instructed.
See how it went.
Review your results, take a break, and return whenever you feel ready.
Reaction Trainer is for recreational practice and entertainment. It is not a medical device or laboratory assessment. Color Reaction changes full-screen colors about once or twice per second; skip it if bright or changing lights affect you. Read the terms of use.
A QUESTION
ABOUT THE APP?
Get help with settings, training modes, reminders, and your local data.
Visit support