StudyStack is one of the oldest free flashcard sites still running, offering a set of simple study games built around card sets. Space Repeat takes a more modern approach: a clean interface with a spaced repetition algorithm that decides exactly when you should see each card again. Here's how they compare.
Try Space Repeat Free| Feature | Space Repeat | StudyStack |
|---|---|---|
| Cost | Free, no subscription | Free, ad-supported |
| Spaced repetition | Yes, automatic scheduling | No, game-based review only |
| Interface | Clean, modern | Dated, minimal design |
| Study modes | Flashcards plus Blurt Mode | Multiple games: matching, hangman, crossword |
| Card creation | Fast, dedicated editor | Simple text-based card entry |
| Image support | Yes | Limited |
| Ads | None | Ads on free tier |
| Mobile experience | Responsive, built for mobile browsers | Not optimised for mobile |
Cost
Spaced repetition
Interface
Study modes
Card creation
Image support
Ads
Mobile experience
StudyStack's game modes can make quick review feel less tedious, and its shared card sets are useful for finding pre-made content. But without spaced repetition, you're relying on repetition alone rather than a schedule tuned to your memory. Space Repeat trades the games for a scheduling algorithm designed to make what you study actually stick.
Choose Space Repeat if…
You want spaced repetition that works immediately, for free, on any device, without setup or configuration.
Choose StudyStack if…
You enjoy StudyStack's simple study games (matching, hangman, crossword) more than a scheduled review system, and don't mind ads or a dated mobile experience.
No. StudyStack offers study games like matching and hangman built around your card sets, but review order isn't scheduled based on what you know and don't know. Space Repeat schedules each card individually so struggling cards come back sooner.
Yes. Space Repeat is built as a responsive web app designed for phones, tablets, and desktops alike. StudyStack's interface predates modern mobile design and isn't optimised for smaller screens.
There's no direct importer between the two, but if you export your StudyStack cards as a simple list, you can reformat them into a CSV file and import them into Space Repeat to get spaced repetition scheduling on that same content.
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