# AF-21 IoTStation

> AF-21 IoTStation (iPhone/iPad app by john Cheng.)

- Source: https://appshunter.io/ios/app/af-21-iotstation/id1555390742 (this page in markdown: same URL + `.md`)
- Developer: [john Cheng](https://appshunter.io/developer/1243789980)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16.2 · 140 MB
- Released: 2021-02-25
- Data updated: 2026-10-03

## What is AF?

For AF-21 & P-901 IoTStation   message receiving.


## Version history (last 2 releases)

### 1.0.5 — 2024-04-02

build to support ios16+

### 1.0 — 2021-02-26

No release notes.

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## More apps by john Cheng

- [IoTstation](https://appshunter.io/ios/app/iotstation/id1243789981)
- [MQTT Stations](https://appshunter.io/ios/app/mqtt-stations/id1578411683)

All apps by john Cheng: https://appshunter.io/developer/1243789980

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-03.*