Comparison

Flash Digits vs 9BLOCK

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

Head to head
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?

About

9BLOCK

This minimalist game challenges your visual recall and focus by requiring you to memorize the order of numbers on nine blocks. It's a quick, engaging experience that's easy to learn but difficult to master.

Highlights
  • Memorize number order
  • Tap numbers 1-9
  • Improve longest streak
  • Ranked progression
  • Customize blocks and reveal time
  • Track personal bests
Features
Read full description

Nine blocks reveal nine numbers. Memorize the order before it disappears. Then tap from 1 to 9 without a mistake. It sounds simple. It isn't. 9BLOCK is a fast-paced, minimalist memory game that tests your visual recall, focus, speed, and consistency. Every attempt takes only seconds, making it easy to play and difficult to put down. PLAY YOUR WAY - Improve your longest streak - Climb through ranked progression - Customize the number of blocks and reveal time for practice - Track your personal bests - Challenge yourself with faster and harder rounds EASY TO LEARN. HARD TO MASTER. There are no complicated controls or lengthy tutorials. See, remember, and tap in order. Can you master 9BLOCK?

Screenshots

Flash Digits4 screens
9BLOCK3 screens

Verdict

The call

The clearest difference is rating: 9BLOCK at 5.0 against Flash Digits's 4.0. 9BLOCK also leads on ratings volume (3 vs 1). Flash Digits's advantage is update cadence (weekly vs every 3 weeks). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

9BLOCK holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Flash Digits ships an update weekly, 9BLOCK every 3 weeks. The most recent releases landed on October 9, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Flash Digits versus 9BLOCK: the parameters behind the verdict, then further details
ParameterFlash Digits9BLOCK
PriceFreeFree
Rating4.0 (1 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings13 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size68 MB23 MB
Age rating4+4+
DeveloperROKONTECH LLCDuncan Fondren

Customer experience

Flash Digits

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

9BLOCK

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Flash Digits

No in-app purchases

None

9BLOCK

No in-app purchases

Questions

Is Flash Digits free?
Flash Digits is free to download, with no in-app purchases.
Is 9BLOCK free?
9BLOCK is free to download, with no in-app purchases.
Which has better reviews, Flash Digits or 9BLOCK?
9BLOCK is rated higher. Flash Digits averages 4.0 out of 5 from 1 ratings, while 9BLOCK averages 5.0 from 3 ratings.
Do Flash Digits or 9BLOCK have ads?
Neither Flash Digits nor 9BLOCK shows ads.
Which is updated more often, Flash Digits or 9BLOCK?
Flash Digits ships an update weekly, and 9BLOCK every 3 weeks. Most recently, Flash Digits was updated on October 9, 2026 and 9BLOCK on October 31, 2026.

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