KLine Plus is an app offering encrypted SIP calls and text messaging. With Kline Plus, you can be reachable with a Wi-Fi or 3G/4G connection.
Features:
- Unlock screen
- Optional unlock screen
- Saved messages are encrypted with AES
- Private and encrypted contacts list: numbers not saved in phone contacts list
- Autodelete messages with timer
- ZRTP encryption for calls and optional ZRTP encryption for chat
- ZRTP encryption for video calls
- ZRTP encryption for conference calls
- TLS for registration