# Gastro vs fonio.ai

The clearest difference is update cadence: fonio.ai at every 3 days against Gastro's every 4 months. Gastro's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 16.4). On price, ads and in-app purchases there is nothing between them.

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

Gastro ships an update every 4 months, fonio.ai every 3 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Gastro | fonio.ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fonioai/id6774538486/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 24 MB | 60 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Gastro Sound PB Musiksysteme GmbH](https://appshunter.io/developer/1260977733) | [fonio GmbH](https://appshunter.io/developer/6774538488) |

## What reviewers say

### Gastro

[App page](https://appshunter.io/ios/app/gastro-sound-control/id1513932441)

**Features:** macOS Compatibility

**In-app purchases:** none


### fonio.ai

[App page](https://appshunter.io/ios/app/fonioai/id6774538486)

This app allows users to make and receive business calls using their existing Fonio phone numbers. It provides features like selecting outgoing caller ID, viewing call history, and searching contacts. An active Fonio business account and internet connection are required for use.

**Highlights:** Make and answer business calls, Select outgoing caller ID, View call history, Search and call contacts, Manage Fonio phone numbers

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

**In-app purchases:** none


## Frequently asked questions

### Is Gastro free?

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

### Is fonio.ai free?

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

### Do Gastro or fonio.ai have ads?

Neither Gastro nor fonio.ai shows ads.

### Which is updated more often, Gastro or fonio.ai?

Gastro ships an update every 4 months, and fonio.ai every 3 days. Most recently, Gastro was updated on October 9, 2026 and fonio.ai on October 7, 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.*