Study Sprint: Offline Study Timer

Inspiration

What it does

How we built it## Inspiration

Many students in rural and low-income areas study on cheap phones with limited data and no money for paid apps. Most focus-timer and study apps need an account, an internet connection, or a subscription. I wanted to build something free that anyone can open on any basic phone and use immediately.

What it does

Study Sprint is a free, offline study timer and task list.

• A 25-minute focus timer for study sprints
• A task list where you can add, tick off, and delete study tasks
• A self-measurement counter that tracks your completed sprints and total focus minutes
• No sign-up, no account, no internet needed after the page loads
• Your data stays on your own device

How I built it

I built it with plain HTML, CSS, and JavaScript in a single file, so it has no dependencies and runs on any browser, including older and low-end phones. Tasks, sprint count, and focus minutes are saved with the browser's localStorage, which is what lets it keep working offline and remember your progress after a refresh.

Challenges

• Keeping the app small and simple enough to run on low-end devices
• Making sure the timer, task list, and saved progress all stayed in sync
• Testing the sprint-complete behavior without waiting 25 minutes (I temporarily shortened the timer)

What I learned

I learned how to scope a project to fit a deadline, how to use localStorage for offline data, and how designing for accessibility (no sign-up, works offline, big buttons) changes the choices you make.

What's next

• Custom timer lengths and break timers
• Multiple languages
• A weekly progress chart
• Installable as a home-screen app (PWA) for fully offline use

Challenges we ran into

Accomplishments that we're proud of

What we learned

What's next for Study Sprint: Offline Study Timer

Built With

• css
• github
• html
• javascript
• localstorage