100 Days: Party all milestones

A birthday comes once a year. 100 Days counts the days from a date that matters to you and turns every hundred into a fresh reason to celebrate. There are 365 days in a year — that's day 100, 200, and 300. Three little celebrations instead of one. And the same for every event you add. What the app does: - Counts days from any date: a birthday, a move, the start of a habit, an anniversary - Shows the next round milestone — 100, 200, 300 days, and so on - A progress bar to the next milestone so you can see how much is left - Countdown to a calendar anniversary - Countdown to a future date for planned events - Reminders about an upcoming milestone (optional, off by default) - An emoji icon for each entry, with keyword search - Light, dark, and system themes - Export and import entries as CSV Who it's for: - Parents — track how many days old your little one is, no need to wait for the first year - Anyone starting or quitting a habit — 100 days smoke-free sounds solid - Couples — count the days together, not just anniversaries - Anyone who launched a project, moved, or started something new What the app does NOT do: - No sign-up or account required - No internet needed — everything works offline - No ads - No data collection: entries stay on your device only Settings you can turn on or off: - Intermediate milestones (200, 300, 400…) - Countdown to anniversary - Countdown to date - Reminders The app does one simple thing and tries to do it carefully. If something is missing or doesn't work as expected, leave a review — we read them.