Heptabase vs Den

Heptabase is a visual note-taking app that helps you learn complex topics. The mobile app provides full access to all your cards and journals, and allows you to read all your whiteboards.

Den is a calm focus timer with a tiny pixel friend who keeps you company. Start a timer and your friend sits quietly beside you on a retro LCD screen. Every hour you focus helps them grow. Collect all six little characters. Each one levels up on its own, one level for every 10 hours you spend with them. TWO WAYS TO FOCUS • Stopwatch: no limit, just focus until you are done. • Countdown: pick anything from 5 minutes to 3 hours. You get a gentle notification when time is up. KEEP TRACK • Tag your sessions, like Study or Work, and add your own tags. • Records: browse every session by week, edit it, or add one you forgot to time. • Statistics: see your focus by day, week, month, and year, with a calendar, best focus hour, daily average, and a breakdown by tag. YOUR DATA STAYS YOURS • Your records sync through your own private iCloud, so they come back when you reinstall or switch devices. • No account. No ads. No tracking. No third-party code. DESIGNED TO BE CALM Den has no streaks, no daily goals, and nothing that shrinks or gets sad when you are away. Your friend is happy to see you whenever you come back. Levels only go up. • Live Activity on your Lock Screen and Dynamic Island • Light and Dark Mode • Dynamic Type support