# Blue Switch vs Blue Post Cross

The clearest difference is in-app purchases: Blue Post Cross at none against Blue Switch's 1. Blue Post Cross also leads on ads (none vs shown) and update cadence (daily vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Blue Switch sells 1 one-off in-app purchase. Blue Post Cross asks for nothing beyond the download.

Blue Switch ships an update every 3 months, Blue Post Cross daily. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Blue Switch | Blue Post Cross |
| --- | --- | --- |
| 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 | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 9 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vitalij Schaefer](https://appshunter.io/developer/393749449) | [Toshinori Matsui](https://appshunter.io/developer/1870057546) |

## 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 |


### Blue Post Cross

[App page](https://appshunter.io/ios/app/blue-post-cross/id6801400267)

**In-app purchases:** none


## Frequently asked questions

### Is Blue Switch free?

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

### Is Blue Post Cross free?

Blue Post Cross is free to download, with no in-app purchases.

### Do Blue Switch or Blue Post Cross have ads?

Blue Switch shows ads; Blue Post Cross does not.

### Which is updated more often, Blue Switch or Blue Post Cross?

Blue Switch ships an update every 3 months, and Blue Post Cross daily. Most recently, Blue Switch was updated on September 23, 2026 and Blue Post Cross on September 17, 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.*