Felinify

Felinify is a flashcard app I’m building to reimagine how students study. It started with two goals:

• I wanted to build something real with AI.
• I wanted to fix everything I hated about Quizlet.

I’ve used Quizlet a lot in school, but the free plan started to feel really limited. There were so many features I wanted that just didn’t exist. So instead of waiting for someone else to build it, I decided to try it myself.

That’s how Felinify was born.

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The Idea

I wanted to make a flashcard app that was super minimal and only focused on what actually helps you learn. Nothing extra. No bloat. Just simple tools that work.

Here’s what I’v done so far:

• You can create flashcard decks manually or use AI to generate them from notes
• A Classic Flip mode where you study flashcards and earn mastery as you go
• A Challenge mode quizzes you on your flashcards and tracks how well you’re doing
• An AI Adaptive Quiz mode that generates quizzes based on your flashcards and past performance
• Deck mastery tracking to visualize progress over time
• Paid plans give you more AI generation credits and full access to the AI features
• An Explore page to browse public decks

The design is also themed around a bright, orange cat look. Clean, light mode, and fun to use.

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What I Learned

One of the biggest things I improved from my last project (Focul) was performance and code structure. Focul had messy code and slow load times, so this time I focused on building something that’s actually optimized and scalable.

I also learned a lot about building for real users. I designed different study modes, created a full deck mastery system, added AI limits based on user plans, and made sure the whole experience feels smooth and easy to use. I spent time thinking about how to keep the app lightweight but still powerful, and how to make it fun too.

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What’s Next

Right now, Felinify is live and working. I was surprised when someone random signed up and actually created a flashcard deck. However, I now I had to disable signup as the web app is still under development.

Here’s what I’m planning to add soon:

• A cat AI assistant called Lumi
• Better onboarding and landing page
• Legal stuff like privacy policy and TOS
• And many more!

Felinify isn’t just a side project. I will be officially launching it as my first startup as soon as it’s ready. I’m excited to keep improving it, get real users, and see how far I can take it.

If you’re a student who likes flashcards or wants something smarter than Quizlet, you can try out Felinify too.
Thanks for reading!

Github Repo: https://github.com/kysondev/felinify (Please consider leaving a star!)
Link: https://felinify.com/