01PPupilBot@pupilbot_botFreemiumThe Telegram half of PupilBot: you turn photos of your notes or pages of a PDF into a study in the web or iPhone app, and the bot quizzes you in chat whenever a question is due for spaced-repetition review.Textbooks & notesFreemiumFor studentsOfficial65 / 100ScoreOpen
02SSumItUp@AISummaryBot_botFreemiumSend a YouTube lecture, a podcast, an audio file up to three hours or a PDF and get a structured summary back, then ask follow-up questions about it. Three free summaries a day; paid plans from $7 a month or 450 Stars.Textbooks & notesFreemiumYouTubeAccepts files66 / 100ScoreOpen
03ASK PDF AI@askpdfaibotFreemiumSend a PDF into the chat and ask about it in plain language: summaries, key ideas, specific answers. The first 20 questions are free; after that credits are sold only for TON.Textbooks & notesFreemiumAccepts filesMini App53 / 100ScoreOpen
