Gizmo vs Retain
Gizmo
gizmo.aiRetain
retain.cardsSide by side
| Figure | Gizmo | Retain |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Plans published | 5 | 3 |
| Spec score · Flashcard apps | 9.1 (#1) | 8.1 (#18) |
| Spec score · AI Flashcard Generators | 9.0 (#4) | 8.0 (#19) |
| Card formats | The service supports card text, multiple choice, matching, ordering and true/false cards. | mixed |
| Free plan | Yes | Yes |
| Headquarters | London, United Kingdom | Mörlenbach, Germany |
| Mobile app coverage | ios_android | Yes |
Plans
Gizmo
- Long-term planPrice not published
- Last minute planPrice not published
- FreeFree
- Unlimited weeklyPrice not published
- Unlimited yearlyPrice not published
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.