Keep your reflexes vs Numsprint
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Keep your reflexes
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FlashFive is a fun training game that helps you boost your focus and improve your reaction speed! Five circles appear on the screen, and your goal is to tap the one that lights up within the time limit. The time gets shorter little by little, but don’t rush—take your time and enjoy the challenge. Your score is based on how many circles you tap correctly. Play at your own pace and steadily train your concentration while having fun. Try playing a little every day to refresh your mind and body!
Numsprint
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Numsprint is a fast, addictive number-tapping brain game. Just tap the numbers in ascending order—1, 2, 3…—as quickly as you can. Simple to learn, hard to master! Race against the clock, beat your best time, and train your reaction speed, focus, and peripheral vision in just a few minutes a day. ■ 5 Difficulty Levels - Easy: 3×3 (1–9) - Normal: 4×4 (1–16) - Hard: 5×5 (1–25) - Expert: 4×4 with 16 random numbers from 1–30 - Master: 5×5 with 25 random numbers from 1–50 ■ Features - Best time records for every difficulty - 20 achievements to unlock - Daily reminder to build your habit - Clean, bright, relaxing design - One-handed, quick play—perfect for a short break - No account required Great for brain training, boosting concentration, and challenging friends for the fastest time. Download Numsprint and see how fast your brain really is!
Screenshots
Verdict
The clearest difference is update cadence: Keep your reflexes at every 2 days against Numsprint's weekly. Keep your reflexes also leads on iOS requirement (15.6 vs 26.2). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Keep your reflexes ships an update every 2 days, Numsprint weekly. Both last shipped on September 26, 2026.
| Parameter | Keep your reflexes | Numsprint |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days — better | Weekly |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Masaharu Tsukamoto | ryuya matsuo |
In-app purchases
Keep your reflexes
No in-app purchases
Numsprint
No in-app purchases
Questions
Is Keep your reflexes free?
Is Numsprint free?
Do Keep your reflexes or Numsprint have ads?
Which is updated more often, Keep your reflexes or Numsprint?
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