# SUN vs MultiChat AI

The clearest difference is in-app purchases: SUN at none against MultiChat AI's 1. SUN also leads on iOS requirement (13.4 vs 16.4). MultiChat AI's advantage is device support. On price and update cadence there is nothing between them.

Both are free to download. MultiChat AI sells 1 in-app purchase, starting at $12.99 per month. SUN asks for nothing beyond the download.

SUN ships an update every 14 months, MultiChat AI every 17 months. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SUN | MultiChat AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | **Every 14 months** | Every 17 months |
| Size | 24 MB | 63 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 12+ |
| Developer | [SUN-TEC CORPORATION](https://appshunter.io/developer/1711446511) | [Fardosa Ahmed](https://appshunter.io/developer/1802568843) |

## What reviewers say

### SUN

[App page](https://appshunter.io/ios/app/sun-tec/id6469055994)

**In-app purchases:** none


### MultiChat AI

[App page](https://appshunter.io/ios/app/multichat-ai/id6745743618)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $12.99 | per month |


## Frequently asked questions

### Is SUN free?

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

### Is MultiChat AI free?

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

### Which is updated more often, SUN or MultiChat AI?

SUN ships an update every 14 months, and MultiChat AI every 17 months. Most recently, SUN was updated on October 11, 2026 and MultiChat AI on October 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.*