Thunderbird for Android is an open source email app, bringing account and message management to Android phones and tablets.
Open source
24 alternativesCodec2 Talkie
Codec2 Talkie turns an Android phone into an amateur radio digital voice transceiver with APRS support and wired or wireless connections.
About Codec2 Talkie
Codec2 Talkie turns an Android phone into an HF/VHF/UHF digital voice and APRS transceiver using Codec2, OPUS and FreeDV modes. It sends and receives digital voice over KISS and APRS UI frames, and handles APRS position reports, messages, maps, logs, digirepeating and APRS-IS gating.
Use requires additional equipment such as a KISS hardware modem, software modem such as Direwolf, or an analog transceiver with USB audio and VOX or USB CAT PTT control. It runs on Android 6.0 and later.
Key features
- Send and receive Codec2 voice over FreeDV modes
- Send and receive Codec2/OPUS voice over KISS
- Send and receive APRS position reports and messages
- Show APRS map with station info and position tracks
- Act as APRS digirepeater and APRS-IS RX/TX iGate
- Connect via Bluetooth, BLE, USB, TCP/IP or USB audio
Best for: Amateur and citizen radio operators who want digital voice and APRS on an Android phone with external radio hardware.
Good for
- Open source project built around Codec2 and OPUS codecs
- Supports Bluetooth, BLE, USB, TCP/IP KISS and sound-modem connections
- Combines voice communication with APRS messaging, mapping, digirepeating and iGating
Watch out for
- Requires external modem or compatible transceiver for voice operation
- Needs Android 6.0 or later
- APK installs may require allowing unknown sources and removing prior version
Codec2 Talkie at a glance
- Category
- Mobile Apps › Android Apps
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Android
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Codec2 Talkie FAQ
What equipment is needed to use Codec2 Talkie?
Additional hardware such as an AFSK/LoRa/FSK modem, software such as Direwolf, or an analog transceiver with USB audio and VOX or USB CAT PTT control.
Which Android versions are supported?
Minimum supported version is Android 6.0 (API 23); target is Android 15.0 (API 35).
Why does Android block installation of the APK?
It uses a self-signed certificate, so allow installation from unknown sources in Android settings. If you see "App not installed," uninstall the previous version before installing the new one.
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