# Ambi Phone vs SCHELL

The clearest difference is update cadence: SCHELL at every 2 weeks against Ambi Phone's every 19 months. Ambi Phone's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Ambi Phone ships an update every 19 months, SCHELL every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Ambi Phone | SCHELL |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 weeks** |
| Size | 44 MB | 183 MB |
| Requires iOS | 18.0 | **17.2** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ambi-Tech GmbH](https://appshunter.io/developer/1646448536) | [SCHELL Armaturentechnologe GmbH & Co KG](https://appshunter.io/developer/1151157542) |

## What reviewers say

### Ambi Phone

[App page](https://appshunter.io/ios/app/ambi-phone/id6443488574)

**Features:** Siri integration

**In-app purchases:** none


### SCHELL

[App page](https://appshunter.io/ios/app/schell/id6444608310)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ambi Phone free?

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

### Is SCHELL free?

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

### Do Ambi Phone or SCHELL have ads?

Neither Ambi Phone nor SCHELL shows ads.

### Which is updated more often, Ambi Phone or SCHELL?

Ambi Phone ships an update every 19 months, and SCHELL every 2 weeks. Most recently, Ambi Phone was updated on November 3, 2026 and SCHELL on November 3, 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.*