# Infinity vs Sudoku Proof

The clearest difference is update cadence: Sudoku Proof at every 3 days against Infinity's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

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

Infinity ships an update fortnightly, Sudoku Proof every 3 days. Both last shipped on September 26, 2026.

## The numbers

| Metric | Infinity | Sudoku Proof |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Size | 8 MB | 10 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anand Raj R](https://appshunter.io/developer/514675684) | [献慧 陈](https://appshunter.io/developer/1896370005) |

## What reviewers say

### Infinity

[App page](https://appshunter.io/ios/app/infinity-basic-math-questions/id6748877343)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Host a Party (Lifetime) | $1.99 | one-time |


### 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 |


## Frequently asked questions

### Is Infinity free?

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

### Is Sudoku Proof free?

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

### Do Infinity or Sudoku Proof have ads?

Neither Infinity nor Sudoku Proof shows ads.

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

Infinity ships an update fortnightly, and Sudoku Proof every 3 days. Most recently, Infinity was updated on September 26, 2026 and Sudoku Proof on September 26, 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.*