Sosu der vs Sudogu
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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)
Sudogu
This app offers a unique take on Sudoku with user-loaded solution algorithms and instant feedback on incorrect guesses. Enjoy multiple difficulty levels, no time limits, and save your progress anytime. It provides a relaxed, ad-free gaming experience for all ages.
- User loaded solution algorithms
- Immediate feedback on wrong guesses
- Four difficulty levels
- No time limits
- Save progress anytime
- Detailed game records
- Ad-free experience
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Sudogu is an innovative twist on the classic Sudoku puzzle game, offering unique features that set it apart from the rest. Its standout feature is the User Loaded solution algorithms, which allow players to input puzzles from any source and either solve them or play them with helpful hints. Another distinguishing feature is the immediate feedback on wrong guesses—incorrect entries are flagged and disallowed, effectively eliminating the need for note-taking. Sudogu offers four levels of difficulty, each containing 100 puzzles: Simple Easy Intermediate Expert Enjoy a relaxed gaming experience with no time limits. You can save your progress at any point and resume later. Detailed records of all games played, including low scores, average times, and total cumulative game time, are saved and easily accessible. The app includes a full-color User Guide in PDF format, which can be printed, and a quick-reference Help file available during gameplay. Sudogu boasts an ad-free experience, requires no internet connection, offers mutable sound effects, and features a simple, clean interface. Sudogu: Fun for the whole family!
Screenshots
Verdict
The clearest difference is ads: Sudogu at none against Sosu der's shown. Sudogu also leads on update cadence (fortnightly vs every 4 months). On price, in-app purchases, device support and iOS requirement 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.
Sosu der ships an update every 4 months, Sudogu fortnightly. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.
| Parameter | Sosu der | Sudogu |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 140 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Hirobumi Onishi | Neil Rohan |
In-app purchases
Sosu der
No in-app purchases
Sudogu
No in-app purchases









