Comparison

Pi Day Memory Games by Pimon vs Flash Digits

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

Head to head
About

Pi Day Memory Games by Pimon

Engage in a series of memory-based games inspired by the digits of pi. Challenge your recall with timed races, practice sessions, and a Simon-style sequence game. Track your progress and identify areas for improvement with detailed insights.

Highlights
  • Simon-style memory game
  • Timed pi digit recall races
  • Vanishing digits challenge
  • Practice with a reference
  • Guided practice sessions
  • Memory insights and heat maps
  • Educational pi facts and quiz
Features
Read full description

How many digits of pi can you remember? Pi Day is March 14. Pimon turns the world's most famous number into a fun Simon-style memory game. Train your brain, race the clock, practice with a coach, and track exactly where your memory improves. Five games in one: Pimon, Speed Pi, Pi Recall, Pure Pi, and Pi Reader. Great for kids, parents, teachers, and everyone excited about pi! The perfect Pi Day app! Here are the games you get when you download now: PIMON - Simon Meets Pi Watch pi's digits light up with fun colors and authentic touch tones. Repeat the sequence. Start slow, build confidence. See how far you go! 4 speed modes from relaxed to expert control playback Speak to Me mode for Pimon's playback Pause anytime 3 mistakes allowed SPEED PI: Race to 8, 20, 31, 50, 100, or Endless Pick a race, enter the digits of pi as fast as you can. One wrong move ends the run. Beat the timer to enter each digit. Hesitate and it's over! Play Endless for an endurance challenge. Set your record. How many decimal places of pi will you reach? Build memory with a live millisecond timer, progress bar, and coaching when your run ends. 6 race distances with separate stats and leaderboards Endless mode to see how far you can go Millisecond-precision timer One mistake and it's over Personal best tracking per distance PI RECALL - Vanishing Digits Pi Recall matches real π memory competitions: no writing, no scratchpad, no aids. Results are hidden til the end. The ultimate Pi Memory Challenge Track your longest streak PURE PI - Practice Makes Perfect Pure Pi tests all your skills: memory, research, patience and practice. Enter the decimals of π. Use Pi Reference. How far can you go? Instant color feedback on every digit Track your longest streak Pi Reference viewer with 500 digits included (1,000,000 with Pro) PI READER - Practice with a Coach Grab a friend, family member, or coach to help you practice pi while they follow along. Guided practice sessions with a live coach Milestone badges and streak tracking 25 digits per session, unlimited with Pro MEMORY INSIGHTS - Know Your Strengths See exactly where you're strong and where to improve. Your play sessions become a personalized dashboard with accuracy heat maps, weak-spot detection, and a memorized frontier tracker. Core insights are included for all players. Pro unlocks advanced analysis, trends, and deeper heat map data. There is even more to explore: Pimon includes educational material, interesting facts about pi, a fully featured Quiz section, and interactive math and pi visualizations. ABOUT PI - Your Pi Study Guide 15 sections covering everything from the basics to Cantor's infinity proof. Learn why pi appears in circles, waves, quantum mechanics, and places you would never expect. Perfect for studying before Pi Day or prepping for the Quiz. PI QUIZ - 30 Questions Across 4 Levels Test your pi knowledge from basic facts to quantum mechanics. Every question includes a clear explanation so you actually learn. Easy, Medium, Hard, and Expert levels Build answer streaks to unlock badges DISCOVER - 11 Interactive Visualizations Explore where pi appears in math and nature through hands-on animations like Monte Carlo simulations, Fourier waves, Euler's Identity, Cantor's Diagonal, and quantum interference. All included with the app. Share visualizations with friends and classmates. AWARDS AND GAME CENTER Compete on Game Center leaderboards, collect 50+ badges, build streaks, and share your achievements. PIMON PRO In-App Purchase Unlock everything with Pimon Pro: Fast and Expert Pimon speeds Extended Speed Pi timer Extra expert quiz questions Unlimited Pi Reader sessions Full Memory Insights dashboard Full 1,000,000-digit pi reference One-time purchase. No subscription. Whether you are a student preparing for Pi Day, a teacher looking for a classroom tool, or a math enthusiast chasing a new personal best, Pimon makes pi fun and exciting. Start your pi memory journey today!

About

Flash Digits

Test your visual memory and reaction speed by recalling rapidly flashing numbers. Progress through increasing difficulty levels and compete globally. It's a simple yet challenging game of pure memory.

Highlights
  • Rapid number flashing
  • Progressive difficulty tiers
  • Combo system
  • Global leaderboard
  • Personal best tracking
  • Offline play
Features
Read full description

How fast can your brain capture a number? Flash Digits shows you a 4-digit number for a split second — then hides it. Type what you saw. Get it right, and the next flash gets faster. Get it wrong, and it's game over. It starts easy at 0.9 seconds. But every correct answer shaves 60 milliseconds off your time. Before you know it, numbers are flashing at inhuman speeds — and only the sharpest minds survive. HOW IT WORKS A 4-digit number appears on screen. It vanishes almost instantly. You type the number from memory. Correct answers speed up the next flash. One wrong answer ends the game. 8 DIFFICULTY TIERS - Warm Up — ease into it at 0.9s - Quick — numbers start to move at 0.6s - Fast — blink and you'll miss it at 0.45s - Blazing — real focus required at 0.35s - Insane — only sharp eyes survive at 0.25s - Inhuman — beyond normal reflexes at 0.15s - IMPOSSIBLE — 0.08 seconds. Seriously. - FLY MODE — 0.05s. Can you even see it? FEATURES - Pure memory gameplay — no distractions, no timers, just you vs. the flash - Combo system rewards consecutive correct answers - Global leaderboard — compete for Top 3 worldwide - Personal best tracking to beat your own records - Watch an ad to continue once per game — pick up right where you failed - Clean, minimal design with a friendly brain mascot - Works offline — play anywhere, anytime Flash Digits is the ultimate test of visual memory and reaction speed. Simple to learn, nearly impossible to master. How far can you go?

Screenshots

Pi Day Memory Games by Pimon4 screens
Flash Digits4 screens

Verdict

The call

The clearest difference is rating: Pi Day Memory Games by Pimon at 5.0 against Flash Digits's 4.0. Pi Day Memory Games by Pimon also leads on ratings volume (9 vs 1). Flash Digits's advantage is in-app purchases (none vs 1) and iOS requirement (16.6 vs 18.0). On price, review sentiment, update cadence and ads 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. Pi Day Memory Games by Pimon sells 1 one-off in-app purchase. Flash Digits asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pi Day Memory Games by Pimon holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Pi Day Memory Games by Pimon has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Pi Day Memory Games by Pimon ships an update every 6 days, Flash Digits weekly. The most recent releases landed on October 28, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 5 level
Pi Day Memory Games by Pimon versus Flash Digits: the parameters behind the verdict, then further details
ParameterPi Day Memory Games by PimonFlash Digits
PriceFreeFree
Rating5.0 (9 ratings) — better4.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings9 — better1
Update frequencyEvery 6 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS18.016.6 — better
Further details — not scored
Size7 MB68 MB
Age rating4+4+
DeveloperSocially Conscious Software LLCROKONTECH LLC

Customer experience

Pi Day Memory Games by Pimon

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Flash Digits

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

In-app purchases

1 purchases

Pi Day Memory Games by Pimon

One-time1
  • Pimon Pro$0.99
None

Flash Digits

No in-app purchases

Questions

Is Pi Day Memory Games by Pimon free?
Pi Day Memory Games by Pimon is free to download, with in-app purchases available.
Is Flash Digits free?
Flash Digits is free to download, with no in-app purchases.
Which has better reviews, Pi Day Memory Games by Pimon or Flash Digits?
Pi Day Memory Games by Pimon is rated higher. Pi Day Memory Games by Pimon averages 5.0 out of 5 from 9 ratings, while Flash Digits averages 4.0 from 1 ratings.
Do Pi Day Memory Games by Pimon or Flash Digits have ads?
Neither Pi Day Memory Games by Pimon nor Flash Digits shows ads.
Which is updated more often, Pi Day Memory Games by Pimon or Flash Digits?
Pi Day Memory Games by Pimon ships an update every 6 days, and Flash Digits weekly. Most recently, Pi Day Memory Games by Pimon was updated on October 28, 2026 and Flash Digits on October 9, 2026.

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