FlashNumbers：Train your memory vs Time Perception Test
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
Read full descriptionHide full description
【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.
Time Perception Test
Test your ability to accurately judge time intervals from 1 to 30 seconds. Improve your time sense and enhance productivity and decision-making skills in daily life. This app helps you develop a better understanding of time and manage your schedule more effectively.
- Test time intervals (1, 3, 5, 10, 30 seconds)
- Compare predicted vs. actual reaction time
- Improve productivity and efficiency
- Hone time management skills
- Develop intuitive decision-making
Read full descriptionHide full description
Can you really feel a second? Or how accurately do you know how much time has passed? With this innovative app, you can put your sense of time to the test. Simply predict various time intervals, 1, 3, 5, 10, and 30 seconds, and press a button. Then compare it to your actual reaction time. As you improve your accuracy, you will notice a dramatic increase in productivity and efficiency in your daily life. The Time Perception Test trains your time sense and encourages intuitive decisions based on experience. It will help you hone your time management skills and make your life in the fast-paced digital world run more smoothly. The Time Perception Test is your partner in improving your time awareness and making your daily life more productive. Develop a new sense of everyday life. Download it now and start building a new relationship with time.
Screenshots
Verdict
The clearest difference is update cadence: Time Perception Test at every 2 days against FlashNumbers：Train your memory's every 17 months. Time Perception Test also leads on ratings volume (3 vs 1). FlashNumbers：Train your memory's advantage is rating (5.0 vs 4.7). On price, ads, in-app purchases and monetization model 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 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
FlashNumbers：Train your memory ships an update every 17 months, Time Perception Test every 2 days. The most recent releases landed on September 9, 2026 and June 11, 2026 respectively.
| Parameter | FlashNumbers：Train your memory | Time Perception Test |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.7 (3 ratings) |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 17 months | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 52 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Jun Koizumi | Osawa Shunsuke |
Customer experience
FlashNumbers：Train your memory
Time Perception Test
In-app purchases
FlashNumbers：Train your memory
No in-app purchases
Time Perception Test
No in-app purchases
Questions
Is FlashNumbers：Train your memory free?
Is Time Perception Test free?
Which has better reviews, FlashNumbers：Train your memory or Time Perception Test?
Do FlashNumbers：Train your memory or Time Perception Test have ads?
Which is updated more often, FlashNumbers：Train your memory or Time Perception Test?
Other comparisons
