HighSpeed! Numbers vs Sosu der
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
HighSpeed! Numbers
A quick-paced brain training game where players tap numbers in ascending order within a time limit. It enhances cognitive skills like dynamic and peripheral vision. Ideal for short bursts of play anytime.
- Tap numbers in order
- Timed gameplay
- Combination scoring
- Decimal and hexadecimal modes
- Dynamic vision training
- Peripheral vision training
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"HighSpeed! Numbers" is an easy brain training game played by simply touching the given numbers in order. However, the numbers move randomly, so it takes skill to touch them. Try to touch as many numbers as possible within the one- minute time limit. Touching the numbers faster will form combinations, which results in a higher score. If the decimal mode is too easy for you, try the hexadecimal mode. [ Benefits ] ・Prevents forgetfulness ・Dynamic vision training ・Peripheral vision training [ Recommended usage time ] ・Play the game any time you have one free minute. [Summary] This brain training game consists of chasing prompted numbers by touch. ###===----- How to Play -----===### (1)The score is displayed in the upper right hand corner of the screen. Choose numbers one digit at a time from the field, and touch them. (2)If you don't touch the numbers within the time allowed, the score will decrease. (3)If you can touch all of the numbers, the score will increase accordingly, so touch them again. (4)If the numbers are touched quickly enough, a combination will result, and the score will increase greatly as the combination grows. For example, when the score would normally increase by +1, it will now double, quadruple, octuple, etc. (5)Try to increase your score as much as possible by touching the numbers one after another within the total time allotted.
Sosu der
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This app is a quiz application that determines whether a number is prime or composite and swipes the correct answer. A prime number is a natural number greater than 1 that is not divisible by any other number except 1 and the number itself. For example, 2, 3, 5, and 7 are single-digit prime numbers. Composite numbers (composite numbers) are natural numbers greater than 1 that are not prime and are represented by the product of smaller natural numbers (e.g., 4 = 2 x 2, 6 = 2 x 3). Through this app, you can test your judgment and reflexes while having fun learning these mathematical concepts. ... How many two-digit, three-digit, and four-digit prime numbers do you know? Translated with www.DeepL.com/Translator (free version)
Screenshots
Verdict
The clearest difference is ads: HighSpeed! Numbers at none against Sosu der's shown. HighSpeed! Numbers also leads on iOS requirement (9.1 vs 15.0). Sosu der's advantage is update cadence (every 4 months vs every 11 months). On price, 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.
HighSpeed! Numbers ships an update every 11 months, Sosu der every 4 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.
| Parameter | HighSpeed! Numbers | Sosu der |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 months | Every 4 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 156 MB | 140 MB |
| Age rating | 4+ | 4+ |
| Developer | Takemi Matsumoto | Hirobumi Onishi |
In-app purchases
HighSpeed! Numbers
No in-app purchases
Sosu der
No in-app purchases









