I built an app to organize fragmented learning
Hi HN, I built an app to solve a problem I kept running into: I’d read great articles or watch insightful YouTube videos, but within a few days, I’d forget most of what I learned. Taking detailed notes felt like a chore, and I'd rarely revisit them anyway. To solve my own problem, I built Curio. It's an iOS app designed for low-effort capture and active recall. How it works: 1. Share any article or YouTube link to the app. 2. It automatically extracts key ideas as bullet points and links them back to the original context (the specific paragraph or timestamp). 3. The app then generates…
What it does
In the maker’s words, at launch
Hi HN, I built an app to solve a problem I kept running into: I’d read great articles or watch insightful YouTube videos, but within a few days, I’d forget most of what I learned. Taking detailed notes felt like a chore, and I'd rarely revisit them anyway. To solve my own problem, I built Curio. It's an iOS app designed for low-effort capture and active recall. How it works: 1. Share any article or YouTube link to the app. 2. It automatically extracts key ideas as bullet points and links them back to the original context (the specific paragraph or timestamp). 3. The app then generates quizzes from your saved points to help you actually retain the information. The core idea is to move beyond passive bookmarking into active learning, without the heavy lifting of manual note-taking. I'd love to hear your feedback, especially on the quality of the key idea extraction and whether this is a problem you face too. App Store: https://apps.apple.com/app/curio-save-learn-retain/id6745309... More information: https://www.curio-app.com (Currently the app is iOS only)
Does the same job
all alternatives →- AFApp for learning how to write Japanese2012 · ▲55
I'm a long time lurker that recently quit my job to work on my own projects, a lot due to the inspiration from Hacker News. Now I have published my first serious project, an app for learning how to write Japanese characters. It's the app I always wanted but couldn't find when I was studying. It tries to be simple to use, you just start the quiz and go with the flow. There's no need to plan and manage your studies, and it uses spaced repetition for better retention. There's a promo page with more details up at http://www.kanjibyhand.com. It's only for Android so far. The free version includes…
- IWI wrote an eBook on building iOS apps. First chapter is free.2013 · yourfirstiosapp.com · ▲37
- ISI spent 2 years building an iOS app no one asked for2025 · basamasa.github.io · ▲7
i built a heart rate zone training app for runners. ios + apple watch. custom zones, real-time haptics, post-run graphs. all the “smart” stuff you’d expect. but i never talked to a single runner before building it. not even myself lol. started as a thesis → kept building → added features → added a paywall (€4/month!) → launched it → and yeah… no one cared. zero feedback. zero users. just code in the void. i recently made the whole thing free. not trying to “sell” anything now — just seeing if it’s actually useful, and listening this time. curious how others handle this. ever build…
- RNRethink note-taking and learning experience2023 · cmaps.io · ▲9
Hey! Just launched my new project. The cmaps platform was created after a long period of research and development in the field of education. It's known that human thinking is not linear, but rather associative. Without realizing it, we are constantly making connections between the things we learn. I believe that the best way to learn is to make these connections explicit. Instead of studying and taking notes in a linear fashion, we should be able to create a map of the concepts we are learning. This way, we can see the big picture and understand how everything is connected. I can say that…
- FFetchnotes2012 · ▲17
We just launched our startup tonight! It's called Fetchnotes, and it's a note-taking application for short notes like books to read, shopping lists and ideas. Check out our website at www.fetchnotes.com. We're on the web, Android, iPhone, Mac, Windows and Ubuntu — and you can even text or email in your notes. We were just covered in TechCrunch (http://tcrn.ch/IBfr9C), and we'd love for you to check it out and give us your feedback. You can send it to me (Alex Schiff) and my co-founder (Chase Lee) at [email protected], or use our UserVoice forum at fetchnotes.uservoice.com. Also, we're…
- TATimeSlate – A Free Pomodoro Focus Timer and Revision Planner, No Signup2025 · timeslate.app · ▲8
Hey! I just launched TimeSlate.app — a completely free web app to help students stay focused and organized with zero friction. No accounts, no ads, no subscription What it does: - Pomodoro Timer - Task Manager – Tag tasks by subject, assign priorities, track progress. - Subjects - Revision Timetable – Block out your day visually with subject-based time blocks. - Dashboard – See time spent, tasks completed, Pomodoros per subject/day. It’s built for students, self-learners, or really anyone trying to structure deep work time without distractions. Why I made this: Every productivity app I…
More work this month
the category →
The app store for voice native apps that lives in your notch
Work · 28d ago · voiceos.com
The New Calendly▲211Handle all of the work before, during, and after meetings
Work · 17d ago · calendly.com
Launched alongside, June 2025
the whole month →- IM
Hey HN! Pilots everywhere are required to keep a logbook of all their flying hours, aircraft, airports, and so on. Since I track everything digitally (some people still just use paper logbooks!), I put together some data visualizations and a few 3D globes to show my flying history. This globe is probably my favourite so far: https://jameshard.ing/pilot/globes/all If you’ve got ideas for other graphs or ways to show this kind of data, I’d love to hear them!
Life & fun · 2025 · jameshard.ing
Stunning presentations with AI. No design skills required.
AI · 2025 · chroniclehq.com
Build native mobile apps for iOS and Android without code.
Dev tools · 2025 · bble.io
All your connections, across all your socials.
AI · 2025 · pally.com
- WC
I was the main contributor to workout.lol, an open-source fitness app to easily build a workout routine. The project had traction (1.4k GitHub stars, 95 forks, ~20K visits/month), but was eventually sold due to video licensing hurdles. The new owner stopped maintaining it, and the repo went abandoned. Over the next 9 months, I sent 15 emails to try to save it : no replies. Feature requests & issues were ignored. The community was left with a "broken" tool let's say. I couldn't just let it die So I built the new version from scratch with the same open-source spirit, but a better…
Dev tools · 2025 · github.com