# Observation vs Alerty

The clearest difference is update cadence: Observation at every 2 weeks against Alerty's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Observation ships an update every 2 weeks, Alerty every 2 months. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Observation | Alerty |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 80 MB | 16 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stichting Observation International](https://appshunter.io/developer/1464543487) | [Cyber partners](https://appshunter.io/developer/1809217356) |

## What reviewers say

### Observation

[App page](https://appshunter.io/ios/app/observation/id6446407612)

**Features:** Vision Pro support

**In-app purchases:** none


### Alerty

[App page](https://appshunter.io/ios/app/alerty/id6744754889)

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

**In-app purchases:** none


## Frequently asked questions

### Is Observation free?

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

### Is Alerty free?

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

### Do Observation or Alerty have ads?

Neither Observation nor Alerty shows ads.

### Which is updated more often, Observation or Alerty?

Observation ships an update every 2 weeks, and Alerty every 2 months. Most recently, Observation was updated on October 10, 2026 and Alerty on October 15, 2026.

---

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