Comparison

HighSpeed! Numbers vs Sosu der

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

Head to head
About

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.

Highlights
  • Tap numbers in order
  • Timed gameplay
  • Combination scoring
  • Decimal and hexadecimal modes
  • Dynamic vision training
  • Peripheral vision training
Features
Read full description

"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.

About

Sosu der

Features
Read full description

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

HighSpeed! Numbers4 screens
Sosu der4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 6 level
HighSpeed! Numbers versus Sosu der: the parameters behind the verdict, then further details
ParameterHighSpeed! NumbersSosu der
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 11 monthsEvery 4 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.1 — better15.0
Further details — not scored
Size156 MB140 MB
Age rating4+4+
DeveloperTakemi MatsumotoHirobumi Onishi

In-app purchases

None

HighSpeed! Numbers

No in-app purchases

None

Sosu der

No in-app purchases

Questions

Is HighSpeed! Numbers free?
HighSpeed! Numbers is free to download, with no in-app purchases.
Is Sosu der free?
Sosu der is free to download, with no in-app purchases.
Do HighSpeed! Numbers or Sosu der have ads?
Sosu der shows ads; HighSpeed! Numbers does not.
Which is updated more often, HighSpeed! Numbers or Sosu der?
HighSpeed! Numbers ships an update every 11 months, and Sosu der every 4 months. Most recently, HighSpeed! Numbers was updated on October 7, 2026 and Sosu der on October 17, 2026.

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