# Sudoku Proof vs Chesspy

The clearest difference is update cadence: Chesspy at every 2 days against Sudoku Proof's every 5 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sudoku Proof sells 6 one-off in-app purchases and Chesspy sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sudoku Proof ships an update every 5 days, Chesspy every 2 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Sudoku Proof | Chesspy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chesspy/id6816628651/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 14 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [献慧 陈](https://appshunter.io/developer/1896370005) | [037](https://appshunter.io/developer/1880940306) |

## What reviewers say

### Sudoku Proof

[App page](https://appshunter.io/ios/app/sudoku-proof-daily-logic/id6810521523)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Easy Answers | $0.99 | one-time |
| Medium Answers | $1.49 | one-time |
| Hard Answers | $1.99 | one-time |
| Expert Answers | $2.99 | one-time |
| Master Answers | $3.99 | one-time |
| Pro Lifetime | $6.99 | one-time |


### Chesspy

[App page](https://appshunter.io/ios/app/chesspy/id6816628651)

Solve daily chess logic puzzles by strategically placing pieces to attack numbered targets. Compete with friends in multiplayer battles or tackle endless challenges. Offers a tutorial for beginners and advanced modes for experienced players.

**Highlights:** Daily chess logic puzzles, Multiplayer battles with friends, Piece placement strategy, Tutorial for beginners, Unlimited daily boards, Hints and past missions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chesspy Pro | $1.99 | one-time |


## Frequently asked questions

### Is Sudoku Proof free?

Sudoku Proof is free to download, with in-app purchases available.

### Is Chesspy free?

Chesspy is free to download, with in-app purchases available.

### Do Sudoku Proof or Chesspy have ads?

Neither Sudoku Proof nor Chesspy shows ads.

### Which is updated more often, Sudoku Proof or Chesspy?

Sudoku Proof ships an update every 5 days, and Chesspy every 2 days. Most recently, Sudoku Proof was updated on October 25, 2026 and Chesspy on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*