Comparison

TapReaction vs Pi Digits

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

TapReaction

Test your reflexes with this engaging game. Compete against yourself or friends in various modes, measuring your reaction time to the millisecond. Unlock new designs and track your progress with detailed statistics.

Highlights
  • Four distinct reaction test modes
  • One-device two-player duels
  • Daily challenges with global leaderboards
  • Detailed statistics and progress tracking
  • Unlockable levels and cosmetic designs
  • Accessibility features for color vision deficiency and VoiceOver
Features
Read full description

How fast are you really? TapReaction measures your reaction to the millisecond – in four game modes, on your own or in a duel against your friends. FOUR MODES • Color – A tile lights up. Tap it as fast as you can. • Numbers – Find the number shown on the board. • Time – Tap as many lit tiles as possible in 30 seconds. • Traffic Light – The classic reaction test: wait for green, then tap. Too early is a false start! FAIRLY MEASURED TapReaction responds the moment you touch, not when you lift your finger. Misses add a time penalty – so results stay honest and comparable. TWO-PLAYER DUEL Play together on one device: the same tile lights up for both of you – whoever taps first wins the round. Side by side or face to face, on iPhone, iPad and iPhone Duo. MADE FOR IPHONE DUO Fold your iPhone Duo like a book – each half belongs to one player. In tabletop pose you see your target at the top and tap on a stable surface below. Nothing important ever lands in the fold. Close it, and simply keep playing on the outer display. DAILY CHALLENGE A new challenge every day – the same for everyone worldwide. Compare yourself on the daily Game Center leaderboard and build your streak. GAME CENTER Leaderboards, achievements and challenges. Rankings use the standard setup, so everyone plays under the same conditions. YOUR STATISTICS Best times, averages, accuracy and highscores for every setup. With Pro, charts show how your reaction time improves. LEVELS & DESIGNS Every round earns experience – new bests and the Daily Challenge give bonus XP. Rise from Rookie to Legend and unlock new tile designs along the way: Ocean, Candy, Forest, Sunset. Add the Neon, Retro and Black & White design packs if you like – purely cosmetic, scoring stays the same for everyone. FOR EVERYONE • Boards from 16 to 56 tiles, games from 10 to 200 taps • Symbols on colored tiles for color vision deficiency • VoiceOver, Dynamic Type, Dark Mode • Separate sound and haptics settings FREE AND FAIR No ads, no tracking, no subscription. All game modes are free. TapReaction Pro (one-time purchase, Family Sharing) unlocks the duel, statistics charts and the Gold design. Design packs are available individually, and if you like, you can support development with a tip. Your highscores from TapReaction 2 are kept when you update.

About

Pi Digits

Test your ability to memorize and recall digits of Pi. Engage in fast-paced challenges to extend your streak and improve your number recall. Ideal for students, puzzle enthusiasts, or anyone seeking a quick mental workout.

Highlights
  • Memorize digits of Pi
  • Classic typing mode
  • Timed Blitz mode
  • Track best streaks
  • Quick brain workouts
  • Suitable for all levels
Features
Read full description

How many digits of π can you really remember? Pi Digits turns memorizing pi into a fast, addictive challenge - perfect for Pi Day, school contests, or anyone who loves number puzzles. Start at 3.14159… and see how far your memory can go. THREE WAYS TO PLAY • Classic Mode: Type the next digit and build your streak one number at a time. • Blitz Mode: You've got 10 seconds—go as far as you can before the clock runs out. • Practice Mode: Optionally reveal the next digit as you go, with no fails - just relaxed, low-pressure practice. WHY YOU'LL LOVE PI DIGITS • Train your recall: A simple loop that makes practice feel like a game • Quick sessions: Perfect for a short brain workout anytime • Track your best run: Beat your personal record and level up your pi knowledge • Statistics: See your progress and stats over time • Fun for all levels: From beginners learning the first digits to serious memorizers MADE FOR PI FANS (AND FUTURE PI FANS) Whether you're preparing for a classroom competition, challenging friends, or just want a satisfying memory test, Pi Digits is a focused way to practice and improve. Ready to become a Pi master? Download Pi Digits and start your streak today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Subscription required to access all features.

Screenshots

TapReaction4 screens
Pi Digits4 screens

Verdict

The call

The clearest difference is review sentiment: Pi Digits at 100% against TapReaction's 0%. Pi Digits also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 7). On price, ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TapReaction sells 7 one-off in-app purchases. Pi Digits asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pi Digits holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of TapReaction's written reviews are positive against 100% of Pi Digits's.

UpkeepUpdate frequency

TapReaction ships an update every 26 months, Pi Digits monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
TapReaction versus Pi Digits: the parameters behind the verdict, then further details
ParameterTapReactionPi Digits
PriceFreeFree
Rating4.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings11
Update frequencyEvery 26 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size9 MB11 MB
Age rating4+4+
DeveloperLars BergeltSlavka Polanova

Customer experience

TapReaction

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive0.0%
Neutral33.3%
Negative66.7%

Pi Digits

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

7 purchases

TapReaction

One-time7
  • Neon Pack$0.99
  • Retro Pack$0.99
  • Black & White$0.99
Show 4 more
  • Small Tip$0.99
  • TapReaction Pro$2.99
  • Medium Tip$2.99
  • Large Tip$3.99
None

Pi Digits

No in-app purchases

Questions

Is TapReaction free?
TapReaction is free to download, with in-app purchases available.
Is Pi Digits free?
Pi Digits is free to download, with no in-app purchases.
Which has better reviews, TapReaction or Pi Digits?
Pi Digits is rated higher. TapReaction averages 4.0 out of 5 from 1 ratings, while Pi Digits averages 5.0 from 1 ratings.
Do TapReaction or Pi Digits have ads?
Neither TapReaction nor Pi Digits shows ads.
Which is updated more often, TapReaction or Pi Digits?
TapReaction ships an update every 26 months, and Pi Digits monthly. Most recently, TapReaction was updated on November 6, 2026 and Pi Digits on November 3, 2026.

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