# Observo vs ARiiVA Scan

The clearest difference is update cadence: Observo at every 3 weeks against ARiiVA Scan's every 3 months. Observo also leads on iOS requirement (9.0 vs 16.0). 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.

Observo ships an update every 3 weeks, ARiiVA Scan every 3 months. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Observo | ARiiVA Scan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 174 MB | 77 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Unit Solutions AG](https://appshunter.io/developer/639539274) | [Viingo GmbH](https://appshunter.io/developer/1525144707) |

## What reviewers say

### Observo

[App page](https://appshunter.io/ios/app/observo/id1017780435)

**In-app purchases:** none


### ARiiVA Scan

[App page](https://appshunter.io/ios/app/ariiva-scan/id6446881932)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Observo free?

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

### Is ARiiVA Scan free?

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

### Do Observo or ARiiVA Scan have ads?

Neither Observo nor ARiiVA Scan shows ads.

### Which is updated more often, Observo or ARiiVA Scan?

Observo ships an update every 3 weeks, and ARiiVA Scan every 3 months. Most recently, Observo was updated on September 14, 2026 and ARiiVA Scan 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.*