Common questions

Name the project you need reviewed. Pir2Pir works out which School 21 participants can review it and asks them a few at a time rather than posting to everybody. The search runs in the background and stops as soon as somebody agrees; once both have agreed, a chat opens where you arrange a time.

Pir2Pir is a peer-review platform for School 21 participants. It solves one problem: finding somebody to review your project, and giving you a place to arrange the meeting. The review itself happens on the school platform, as usual.

School 21 participants. You sign in with your school account login: a one-time code goes to your student address or the school chat, and there is no password. Nobody exported the school roster, so only people who signed in themselves are here, and there is no list of members to browse.

Nothing. The platform is free for School 21 participants; there are no payments and no subscriptions.

Everybody has their own code and two links to send it with. The invitation goes out once — by student email or in the school chat; you never see the address, and the person can refuse in one click, permanently.

While the search is running a candidate sees the project and the campus, but not who is asking: the decision is made on the work. Names are disclosed at the match. The platform never hands out contacts — not email, not Telegram; if you want to carry on elsewhere, you say so yourself, in the chat.

That is what Chat Guard does. When somebody asks to join, the bot answers the request: to get in, connect a School 21 account. The request stays open while they do — connect it and they are let in automatically. Nobody is refused and nobody waits on a human; the door opens by itself once the account is there.

In a browser at app.pir2pir.ru and in a Telegram bot — one account and the same conversations in both. Nothing to install. Notifications reach the channels you switched on, and turning one off does not affect the rest.