# PLAN4 vs ARÜ.APP

The clearest difference is update cadence: ARÜ.APP at every 4 days against PLAN4's every 3 months. PLAN4's advantage is iOS requirement (15.5 vs 17.0). 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.

PLAN4 ships an update every 3 months, ARÜ.APP every 4 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PLAN4 | ARÜ.APP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 20 MB | 246 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PLAN4 Software GmbH](https://appshunter.io/developer/1548262679) | [iNovaGIS](https://appshunter.io/developer/1019573085) |

## What reviewers say

### PLAN4

[App page](https://appshunter.io/ios/app/plan4-gebaudecheck/id1485242041)

**Features:** Vision Pro support

**In-app purchases:** none


### ARÜ.APP

[App page](https://appshunter.io/ios/app/aruapp/id6760896106)

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

**In-app purchases:** none


## Frequently asked questions

### Is PLAN4 free?

PLAN4 is free to download, with no in-app purchases.

### Is ARÜ.APP free?

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

### Do PLAN4 or ARÜ.APP have ads?

Neither PLAN4 nor ARÜ.APP shows ads.

### Which is updated more often, PLAN4 or ARÜ.APP?

PLAN4 ships an update every 3 months, and ARÜ.APP every 4 days. Most recently, PLAN4 was updated on October 29, 2026 and ARÜ.APP on October 24, 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.*