Reaction Speed
Randomized visual cues train the split-second first step. Every tap is timed to the millisecond so you can see yourself getting quicker.
Digaball App · Reaction Trainer
Volleyball Reaction Trainer
Faster hands. Sharper reads. Train the split-second reactions that win rallies — anywhere, between sessions. Sport-specific drills built by Coach Duke over 35 years on the sand and in the gym.
Coming soon · $2.99 · No equipment needed
35+
Years of coaching, in your pocket
1min
A session — train between reps
3-way
Left · Center · Right reads
$2.99
About the price of a sports drink
Why it works
Built to make you faster.
Hand-Eye Control
Read the ball off the hitter and commit — left, center, or right. Every rep sharpens the eyes-to-hands link that turns a scramble into a clean pass.
Court Reads
You react to real footage of a live swing — not an abstract dot — training the anticipation that gets you to the ball early.
Progress Tracking
Every rep logs your reaction time and accuracy, and the Stats screen keeps your bests. Hit milestones to prove — in numbers — that you're getting quicker.
Normal & Faster
Run the Normal series, then switch to Faster when you're ready for less time to read. Arcade, Unlimited, and Training modes stack the pressure so you're always at your edge.
Coach-Built
Every drill is designed from real coaching — national-title indoor and top-50 sand experience — not a generic reaction game reskinned for volleyball.
Inside the app
See it. Decide. Move.
Two challenge speeds
Pick your challenge
Start with the Normal series — three directional reactions, left, center, and right. Step up to Faster when your hands are ready for less time to read.
- Normal & Faster series — same reads, less reaction time
- Three-direction reads: Left · Center · Right
- See · Decide · Move — commit only once you've read it
Three ways to play
Choose how you play
Every challenge runs in the mode that fits your session — chase a high score, train free-form, or run a quick fixed set right before you compete.
- Arcade — combo scoring, chase the record
- Unlimited — keep going as long as you like
- Training — a short fixed set to find your timing
Timed to the millisecond
Proof you're getting quicker
The app times every read to the millisecond, so improvement isn't a feeling — it's a number on the screen. Watch your reaction time drop and your accuracy climb, rep after rep.
- Reaction time in milliseconds on every rep
- Live score and combo multiplier
- Running accuracy so you know what to fix
Get started in a minute
How it works.
01
Pick a challenge
Choose Normal or Faster, then a mode — Arcade, Unlimited, or Training — to match your session today.
02
React fast
Targets fire across the court. Tap the moment you see them — the app times you to the millisecond.
03
Track & climb
Log your times, beat your best, and unlock milestones as you climb. One minute a day adds up fast.
From Coach Duke
The players who win the scramble are the ones who react first. Now you can train that anywhere.
Anthony “Coach Duke” Duke · 35+ years · National Gold 2000
Good to know
Questions.
Who is the Reaction Trainer for?
Any volleyball player who wants faster hands and sharper reads — indoor or beach, club athlete to weekend competitor. Normal and Faster speeds meet beginners and advanced players where they are.
Do I need any equipment?
No. All you need is your phone. Drills are designed to be done anywhere — at home, in the gym, or courtside between reps.
How much does it cost?
Just $2.99 — about the price of a sports drink. For the same money, you can get a little better instead. Add your name to the early list and we'll tell you the day it's live.
When is it available?
The app is coming soon to iOS and Android. Add your name to the early list and we'll notify you the day it drops.
Does it really improve on-court performance?
The drills are built by Coach Duke around the reactions volleyball actually demands — the first step, the read, the clean touch under pressure. Train them consistently and you'll feel the difference where it counts.
Be first on the court
Get faster. Get the app.
The Volleyball Reaction Trainer is coming soon to iOS and Android — just $2.99, about the price of a sports drink. Join the early list and we'll let you know the moment it's live.
Prefer to train in person? Book sand training with Coach Duke →