# AF vs ChatKit

The clearest difference is update cadence: ChatKit at every 4 months against AF's every 38 months. 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.

AF ships an update every 38 months, ChatKit every 4 months. The most recent releases landed on October 25, 2026 and December 20, 2025 respectively.

## The numbers

| Metric | AF | ChatKit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 4 months** |
| Size | 140 MB | 0 MB |
| Requires iOS | 16.2 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [john Cheng](https://appshunter.io/developer/1243789980) | [Hang Thanh Thi Nguyen](https://appshunter.io/developer/1795164516) |

## What reviewers say

### AF

[App page](https://appshunter.io/ios/app/af-21-iotstation/id1555390742)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChatKit

[App page](https://appshunter.io/ios/app/chatkit/id6744234809)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AF free?

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

### Is ChatKit free?

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

### Do AF or ChatKit have ads?

Neither AF nor ChatKit shows ads.

### Which is updated more often, AF or ChatKit?

AF ships an update every 38 months, and ChatKit every 4 months. Most recently, AF was updated on October 25, 2026 and ChatKit on December 20, 2025.

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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.*