This is a snappy (perhaps too snappy at the expense of quality) open source mobile app for iPhones called Cactus Chat: https://apps.apple.com/us/app/cactus-chat

This is a snappy (perhaps too snappy at the expense of quality) open source mobile app for iPhones called Cactus Chat: https://apps.apple.com/us/app/cactus-chat/id6744444212 https://apps.apple.com/us/app/cactus-chat/id6744444212