Sudoku⁹ vs Goldbach conjecture
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sudoku⁹
This logic-based number-placement puzzle challenges players to fill grids with digits 1-9. Each row, column, and 3x3 subgrid must contain all digits without repetition. It's a classic brain teaser for honing deductive reasoning skills.
- Number placement logic
- Row and column constraints
- 3x3 region rules
- Deductive reasoning challenge
- Classic brain teaser
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Fill in the empty squares with digits so that each row, each column and each 3×3 region contains all of the digits from 1 to 9.
Goldbach conjecture
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This app is a simple game about Goldbach's conjecture. This game is inspired by the movie, Marguerite's Theorem.
Screenshots
Verdict
The clearest difference is device support: Sudoku⁹ at 3 against Goldbach conjecture's —. Sudoku⁹ also leads on iOS requirement (14.0 vs 16.0). On price and in-app purchases 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.
| Parameter | Sudoku⁹ | Goldbach conjecture |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 9 months | — |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | — |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Berson | Sungjun Kim |
In-app purchases
Sudoku⁹
No in-app purchases
Goldbach conjecture
No in-app purchases
