# Blue Switch vs Sudoku Hint

The clearest difference is ads: Sudoku Hint at none against Blue Switch's shown. Sudoku Hint also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (15.1 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Blue Switch sells 1 one-off in-app purchase and Sudoku Hint sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Blue Switch ships an update every 3 months, Sudoku Hint every 3 weeks. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Blue Switch | Sudoku Hint |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (43 ratings)](https://appshunter.io/ios/app/blue-switch/id828280876/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 31 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vitalij Schaefer](https://appshunter.io/developer/393749449) | [Leif Lauridsen](https://appshunter.io/developer/6795538974) |

## What reviewers say

### Blue Switch

[App page](https://appshunter.io/ios/app/blue-switch/id828280876)

Control 2, 4, or 8 channel Bluetooth BLE relay modules from your iPhone or iPad. Assign custom names to modules and individual relays for easy identification and management. Enhance security by changing the default password.

**Highlights:** Control 2, 4, or 8 channel relay modules, Bluetooth BLE connectivity, Assign custom module aliases, Assign custom relay aliases, Change default password for security, Connect to multiple modules

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $17.99 | one-time |


### Sudoku Hint

[App page](https://appshunter.io/ios/app/sudoku-hint-camera-helper/id6795538972)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Hints | $1.99 | one-time |


## Frequently asked questions

### Is Blue Switch free?

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

### Is Sudoku Hint free?

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

### Do Blue Switch or Sudoku Hint have ads?

Blue Switch shows ads; Sudoku Hint does not.

### Which is updated more often, Blue Switch or Sudoku Hint?

Blue Switch ships an update every 3 months, and Sudoku Hint every 3 weeks. Most recently, Blue Switch was updated on October 23, 2026 and Sudoku Hint on October 22, 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.*