A Telegram bot and a companion web app can look alike on your phone. Under the hood they are very different.
You know who runs it. A recommended web app has a named operator, published terms, a privacy policy and an age policy. A random bot has a username.
Your messages go to a known place. Telegram's FAQ says a bot can see your public name, username, profile pictures and every message you send to it. Bot chats are regular cloud chats; Telegram's end-to-end encryption applies to Secret Chats between people. With a web app, your chats go to the company named in its privacy policy; with an unknown bot, they go wherever its owner sends them.
Your Telegram identity stays out of it. Your Telegram account is usually tied to your phone number and your real contacts. An adult chat in a separate browser account, with an email that is not your main one, keeps those apart.
Age checks and content rules exist. The brands we recommend publish 18+ rules and ban content involving minors and, in most cases, real people. A clone bot may have no rules at all, which is a risk to you, not a feature.
Billing has a paper trail. A subscription on the brand's own site comes with a receipt, a cancellation path and published refund terms. Read them first: several of our picks have strict refund rules, which we list in each review.
Two tips that make a web app feel almost like a Telegram bot: add the site to your phone's home screen from the browser menu, and turn on the brand's own notifications if it offers them. For billing traps to watch for, see /guides/ai-companion-billing/; for what these apps keep, see /guides/ai-companion-privacy/.