OpenHabitTracker

The app has no ads, no trackers, no account, no subscriptions and no in-app purchases. All your data stays on your device, and optionally syncs only to a server you run yourself.

Key features:

• Markdown notes, rendered in the list so reading one costs no clicks
• Tasks with a planned date and time, a duration, a checklist and a timer
• Habits measured by how overdue they are rather than by an unbroken streak: a habit with a 10 day interval that is 2 days overdue reads 120%
• Categories and priorities across notes, tasks and habits
• Import and export JSON, YAML, TSV and Markdown, plus import from a Google Keep Takeout ZIP
• 26 themes with dark and light mode
• Full keyboard navigation and screen reader support

Search, filter and sort:

• Control what the list shows with search, date, category, priority, status and sort
• Planned dates and done dates filtered separately, each before, on, after or not on a date you pick
• Date filters take a fixed date or a number of days from today, worked out when the query runs, so a saved filter never goes stale
• Filter habits by how overdue they are, with a lower bound, an upper bound, or both
• Turn the done-date filter around to see what you have not done in a period
• Eleven sort keys, chosen separately for notes, tasks and habits
• Search reads note text and checklist items, not only titles

Customization:

• Almost everything on screen can be turned on or off: which page and which sidebar open at start, what each row shows, which calendars appear, how the filters are drawn, and how tightly the lists are packed
• Some of them add or remove whole blocks from a habit, so the same habit is either a short form or a full statistics page
• A background color to tell your notes, tasks and habits apart at a glance
• Settings are saved, synced, and included in JSON and YAML backups