
Reaction Trainer
REACTION & ATTENTION PRACTICE
Four ways to react. Short, adjustable sessions. Your own progress to explore. Built for recreational practice, wherever you find a quiet moment.
INDEPENDENT THINKING. EVERYDAY PRACTICE.
We’re STASH STUDIO. We build thoughtful digital experiences that turn a little everyday practice into something you can feel.
Software, interaction design & playful learning.

FOCUS.
REACT.
REPEAT.
Reaction Trainer / A STASH STUDIO product
MEET OUR WORK
Simple by design. Engaging in practice.
Our latest focus brings reaction exercises to your Android device.

REACTION & ATTENTION PRACTICE
Four ways to react. Short, adjustable sessions. Your own progress to explore. Built for recreational practice, wherever you find a quiet moment.
FOUR WAYS TO SHOW UP
Wait for the signal. Tap when it’s time. A simple exercise in timing.
Read the arrow and match it with a button or a swipe.
Respond to your target color. Let the other signals pass.
Switch between arrows, taps, and holds in a sequence.
THE STASH STUDIO APPROACH
Every screen has a job. Every interaction should feel considered. We make digital experiences that respect your time and attention.
What we doClear interactions and useful feedback make the next step easy to understand.
Short exercises fit into everyday life, with room to choose your own pace.
Reaction Trainer works without accounts, advertising, or analytics. Training history stays on your device, with Android backup subject to your settings.
Have a question about our work or a digital product in mind?
Talk to the studio