# SionAi vs Domini App

The clearest difference is in-app purchases: Domini App at none against SionAi's 5. SionAi's advantage is update cadence (daily vs every 9 days) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. SionAi sells 5 in-app purchases, starting at $6.99 per month. Domini App asks for nothing beyond the download.

SionAi ships an update daily, Domini App every 9 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | SionAi | Domini App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 days |
| Size | 97 MB | 76 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [IdeaSynesthesia B.V.](https://appshunter.io/developer/6780067299) | [Eduardo Nunes Antunes](https://appshunter.io/developer/6786852297) |

## What reviewers say

### SionAi

[App page](https://appshunter.io/ios/app/sionai/id6780067297)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Companion | $6.99 | per month |
| Companion Pro | $12.99 | per month |
| Companion | $62.99 | per year |
| Companion Pro | $116.99 | per year |
| Daily Celebration | $0.99 | one-time |


### Domini App

[App page](https://appshunter.io/ios/app/domini-app/id6801521707)

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

**In-app purchases:** none


## Frequently asked questions

### Is SionAi free?

SionAi is free to download, with in-app purchases available.

### Is Domini App free?

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

### Do SionAi or Domini App have ads?

Neither SionAi nor Domini App shows ads.

### Which is updated more often, SionAi or Domini App?

SionAi ships an update daily, and Domini App every 9 days. Most recently, SionAi was updated on October 24, 2026 and Domini App on October 29, 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.*