# AF vs ReadTool

The clearest difference is iOS requirement: ReadTool at 13.0 against AF's 16.2. On price, update cadence, 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.

AF ships an update every 38 months, ReadTool every 24 months. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | AF | ReadTool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 24 months** |
| Size | 140 MB | 19 MB |
| Requires iOS | 16.2 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [john Cheng](https://appshunter.io/developer/1243789980) | [FAMEINK PTE. LTD.](https://appshunter.io/developer/1746028804) |

## What reviewers say

### AF

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ReadTool

[App page](https://appshunter.io/ios/app/readtool-offline-reader/id6451404740)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AF free?

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

### Is ReadTool free?

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

### Do AF or ReadTool have ads?

Neither AF nor ReadTool shows ads.

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

AF ships an update every 38 months, and ReadTool every 24 months. Most recently, AF was updated on October 25, 2026 and ReadTool on October 9, 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.*