Silver Dialer
Developer: REVE SYSTEMS LTD.
Other Apps
Secure messenger SafeUM
Secure Your Conversations with SafeUM Messenger
Telegram X
Official Telegram alternative
Discord
Free voice and text chat for gamers
BoloHi
Live chat, games, and 3D hangouts in one social hub
Google Voice
Voice calls with transcription
Snapchat
Fun, creative photo/video sharing