Mobograph is an unofficial app for Telegram that works through a proxy system. It

It utilizes Telegram's API (Application Programming Interface) to supply users this established, trusted app the same high speed, easy-to-use, and secure communication/chat services.

Mobogram works with Telegram's proxy and features an unfiltered type of system... Without filters, you can more efficiently access a secure and high speed connection, safe and fun chats, and the consumption of other content.

Version 8.5.1 boasts a massive increase in speed - and corrections on previously reported bugs.