FlashNumbers:Train your memory vs RRLL
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
FlashNumbers:Train your memory
This game challenges your visual acuity and memory by having you memorize and input numbers shown briefly on screen. Progress through increasing difficulty levels and track your daily improvements with graphs. Share your high scores on social media.
- Memorize and input numbers
- Dynamic visual acuity training
- Multiple difficulty levels
- Daily improvement graphs
- Tutorial for beginners
- Share results to SNS
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【overview】 It is an application that challenges the limits of dynamic visual acuity and memory. By playing repeatedly, you can also train your dynamic visual acuity and memory. It is a game to memorize and input the numbers displayed on the screen only for a moment. As you continue to answer correctly, the time displayed will decrease little by little. The game continues until you make a mistake. Test your limits or use it to train your dynamic vision and memory. We have prepared several difficulty levels, so please play with the difficulty level that suits you. We recommend that you start with the easy ones first. You can post the results to various SNS by pressing the Share button on the result screen. Please share if you get good results. The app permissions require access to storage, but I'm using it to take screenshots for posting. You can see the number of correct answers every day in a graph, so you can see how much you have improved. 【function】 There are 5 levels: Beginner, Elementary, Intermediate, Advanced and Advanced. Three numbers are displayed in the introductory. After that, it will increase by 1, and it will be 7 in special class. ・Tutorial function. We have tutorials for beginners. You can learn how to play while actually experiencing. ・You can see the record of each game. ・Changes in the number of clears for each difficulty level for 31 days are displayed in a graph. 【Operation instructions】 Enter a number using the numeric buttons on the lower left. If you want to erase one character, press Back. After entering, click OK to proceed. 【price】 You can play all for free.
RRLL
This game tests dynamic visual acuity by having players tap the correct half of the screen based on visual cues. Aim to beat your high score by accurately responding within a 10-second measurement period. Improve your reaction time and precision with this engaging challenge.
- Dynamic visual acuity measurement
- 10-second testing periods
- High score tracking
- Left/right screen touch controls
- Score-based feedback
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RRLL is a game that measures dynamic visual acuity. When you start the game, the measurement for 10 seconds will start. Let's measure with the aim of updating the high score. R: Touch the right half of the screen. L: Touch the left half of the screen. Good = score + 100 / Miss = score - 100
Screenshots
Verdict
The clearest difference is rating: FlashNumbers:Train your memory at 5.0 against RRLL's 3.0. FlashNumbers:Train your memory also leads on review sentiment (33% vs 0%). On price, ratings volume, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FlashNumbers:Train your memory holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 33% of FlashNumbers:Train your memory's written reviews are positive against 0% of RRLL's.
FlashNumbers:Train your memory ships an update every 17 months, RRLL every 10 months. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.
| Parameter | FlashNumbers:Train your memory | RRLL |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 33.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 17 months | Every 10 months — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 52 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Jun Koizumi | YUSEI MIYOSHI |
Customer experience
FlashNumbers:Train your memory
RRLL
In-app purchases
FlashNumbers:Train your memory
No in-app purchases
RRLL
No in-app purchases
Questions
Is FlashNumbers:Train your memory free?
Is RRLL free?
Which has better reviews, FlashNumbers:Train your memory or RRLL?
Do FlashNumbers:Train your memory or RRLL have ads?
Which is updated more often, FlashNumbers:Train your memory or RRLL?
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