# crabSDR — Listen to ham radio anywhere

> Listen to ham radio anywhere (iPhone/iPad app by Dirk Reich.)

- Source: https://appshunter.io/ios/app/crabsdr/id6823214960 (this page in markdown: same URL + `.md`)
- Developer: [Dirk Reich](https://appshunter.io/developer/1871531346)
- Category: Utilities, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English, German (Germany)
- Released: 2026-11-06
- Data updated: 2026-11-09

## What is crabSDR?

crabSDR turns your iPhone and iPad into an amateur radio receiver. The app connects to crabSDR stations – WebSDR receivers run by radio amateurs on their own hardware – and plays what is on the air right now: repeaters on 2 m and 70 cm, SSB nets, FM calling, APRS, FT8, SSTV, FreeDV and DAPNET pager calls.

• Directory of all public stations on crabsdr.de, search by band, distance and location
• Add your own stations: public address, home network (Bonjour) or QR code
• Real-time waterfall and spectrum, tap and drag to tune, pinch to zoom
• The station's modes: FM, AM, USB, LSB, CW, DATA and DV (FreeDV with RADE and Codec 2), with call sign display
• Audio keeps playing in the background and with the screen locked, via Bluetooth, AirPlay and CarPlay audio; lock-screen controls, sleep timer, recording
• Live decoders: APRS with map, FT8, SSTV images, FreeDV call signs, pager (POCSAG)
• Quick tune, band plan ranges, repeater markers with system colors (FM, DMR, C4FM, D-Star, TETRA), memories synced via iCloud
• Station chat with report and hide, network chat via crabsdr.de
• Favorites widget, Live Activity in the Dynamic Island, Shortcuts ("Listen with crabSDR", "Stop crabSDR", "crabSDR sleep timer")
• iPhone portrait and landscape, iPhone Duo folded, unfolded and half-folded as a tabletop radio, iPad with sidebar, keyboard shortcuts like the web UI, VoiceOver
• Entirely in English or German, following your device's language

crabSDR is receive-only: no transmitting, no account, no ads, no tracking. The app collects nothing; what a station processes is up to its operator and shown in the app under "Info".

Running a receiver yourself? See crabsdr.de.

## Is crabSDR safe?

Not enough ratings yet to assess crabSDR.

## Is crabSDR legit?

crabSDR has limited verification signals. The AppsHunter Legitimacy Score for crabSDR is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.2.0 — 2026-11-06

• The app is entirely in English or German – following your iPhone's language, with the same terms as the stations
• Numbers follow the language: 438.225 MHz in English, 438,225 MHz in German
• Without a name of your own you now appear in the chat as crab-47 – the same in both languages
• App and decoder messages in the app's language
• Camera, location and home network prompts and the share menu in both languages too

### 1.1.0 — 2026-11-06

No release notes.

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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 2026-11-09.*