Retain vs Revisely
Retain
retain.cardsRevisely
revisely.comSide by side
| Figure | Retain | Revisely |
|---|---|---|
| Price from | Free | $0.42/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| Plans published | 3 | 6 |
| Spec score · Flashcard apps | 8.1 (#18) | 8.3 (#12) |
| Spec score · AI Flashcard Generators | 8.0 (#19) | 8.1 (#18) |
| Free plan | Yes | Yes |
| Privacy | The privacy policy says usage data, including created flashcards and learning progress, may be analyzed in aggregated and anonymized form and used to improve AI models and algorithms. | Revisely says it does not sell personal information and that flashcard decks, quizzes and notes are private by default unless users share them. |
| Product | Retain describes itself as a science-based flashcard app that uses AI models and learning science to create personalized learning plans. | Revisely provides AI-powered tools for students, teachers and professionals to create learning resources for self-study and teaching. |
| Security | The privacy policy says Retain uses industry-standard security measures but cannot guarantee absolute security. | The privacy policy says data is encrypted in transit and at rest, with firewalls and access controls limiting access to authorized personnel. |
Plans
Revisely
- BasicFree
- Annual$4.99 a month
- Monthly$11.99 a month
- BasicFree
- Annual$4.99 a year
- Monthly$11.99 a month
In their own words
Retain
Retain is a flashcard app for Android, iOS, and the web. It uses AI models and learning science to create personalized learning plans: learners set a goal and receive a plan, and the AI can generate flashcards from uploaded PDFs. The site lists PDF, PNG, and JPEG uploads; its onboarding also names images, YouTube videos, GoodNotes notes, and Notion notes as learning sources. Card options include cloze, image occlusion, and custom Anki types, with mixed card formats and study modes and adaptive review. Decks and individual cards can be shared by link. The company also offers B2B licenses to businesses and educational institutions, with pricing available by contacting Retain. Its privacy policy says usage data, including flashcards and learning progress, may be analyzed in aggregated and anonymized form to improve AI models and algorithms.
Revisely
Revisely is a web service for students, teachers and professionals creating learning materials from uploaded or pasted content. Its AI tools generate summaries, flashcards and quizzes. Flashcards can come from pictures, notes, PDFs, PowerPoints and other documents, then be practiced, shared, printed or exported. Quiz generation uses notes, textbooks, PDFs or PowerPoints and can help edit questions and assess answers. A notes tool can extend, shorten, rephrase, proofread, translate or change a text’s tone. The video summarizer accepts publicly viewable YouTube links, with summaries users can edit. Generators support content in over 50 languages. Uploads include PNG, JPG, JPEG, PDF, DOCX and PPTX files, plus typed text. The free Basic plan allows five AI-chat messages daily, five pages per document and 25,000 characters per text upload. Annual billing costs $4.99 per month, billed annually; monthly billing costs $11.99 per month. Flashcards export to Anki or text formats, while quiz exports to Moodle, Canvas or Blackboard require Professional or Business plans.