# Alertr vs Schlüter®

The clearest difference is in-app purchases: Schlüter® at none against Alertr's 2. Schlüter® also leads on update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Alertr sells 2 in-app purchases, starting at $2.49 per month. Schlüter® asks for nothing beyond the download.

Alertr ships an update monthly, Schlüter® every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Alertr | Schlüter® |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 80 MB | 106 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [We are Made BV](https://appshunter.io/developer/1065656436) | [Schlueter-Systems KG](https://appshunter.io/developer/915757337) |

## What reviewers say

### Alertr

[App page](https://appshunter.io/ios/app/alertr/id6499338952)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subcription. | $2.49 | per month |
| Yearly subscription | $19.95 | per year |


### Schlüter®

[App page](https://appshunter.io/ios/app/schluter-tr-control/id6749083068)

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

**In-app purchases:** none


## Frequently asked questions

### Is Alertr free?

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

### Is Schlüter® free?

Schlüter® is free to download, with no in-app purchases.

### Do Alertr or Schlüter® have ads?

Neither Alertr nor Schlüter® shows ads.

### Which is updated more often, Alertr or Schlüter®?

Alertr ships an update monthly, and Schlüter® every 2 weeks. Most recently, Alertr was updated on October 25, 2026 and Schlüter® on October 25, 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.*