CSipSimple vs TextNow

CSipSimple

Description: CSipSimple is an open source SIP client for Android that allows you to make VoIP calls over Wi-Fi or mobile data. It supports common SIP features like call transfer, call forwarding, call waiting, 3-way conferencing, etc.

Type: software

Pricing: Open Source

TextNow

Description: TextNow is a free texting and calling app and service. It provides a free phone number to send SMS messages and make phone calls over Wi-Fi. The basic service is ad-supported, but premium options without ads are available.

Type: software

CSipSimple Features

• VoIP calling over Wi-Fi or mobile data
• Support for common SIP features like call transfer, call forwarding, call waiting, 3-way conferencing
• Video calling support
• Call recording
• Encryption using SRTP and ZRTP
• NAT traversal using STUN, TURN, ICE
• Voicemail support using SIP MESSAGE
• Caller ID support
• Contacts integration
• Call history
• Auto answer

TextNow Features

• Free phone number
• Free calling and texting over WiFi
• Voicemail
• Call forwarding
• Conference calling
• Group messaging
• MMS picture messaging

CSipSimple

• Open Source

TextNow

• Not listed