Licence and freemium features
Is the free package usable, or is it worth paying extra?
The basic version of Telegram is free to use, but there is a paid tier called Telegram Premium that generally doubles things, such as the upper limit for subscribed groups, but most of the limits are reasonable on a free account anyway. The Premium version also removes the advertising in public channels, offers voice-to-text and an improved interface for chat organisation. In our opinion, the free account should be sufficient for the majority of users, including business users.