Apps like GSTelecom by G999 Blockchain

Here are some great alternatives to GSTelecom by G999 Blockchain by GSB Gold Standard Banking Corporation AG :
ADAMANT Messenger
ADAMANT Messenger
★4.2
Whisper MSG
Whisper MSG
★4.1
allgram Messenger
allgram Messenger
★4.1
BlaaChat
BlaaChat
★4.9
Threema. The Secure Messenger
Threema. The Secure Messenger
★4.3
PayCap
PayCap
★4.7
SteemMobile
SteemMobile
★5.0
Oversec
Oversec
★4.2
BudChat
BudChat
★4.2
SLYGUARD
SLYGUARD
★4.6
Teegra Messenger Crypto Wallet
Teegra Messenger Crypto Wallet
★3.8
Element - Secure Messenger
Element - Secure Messenger
★3.3
OpenKeychain: Easy PGP
OpenKeychain: Easy PGP
★4.1
Garble
Garble
★3.7
SafeSwiss® Private Messenger
SafeSwiss® Private Messenger
★4.0
Chiffry Secure Messenger
Chiffry Secure Messenger
★4.5