Build up to 100 of anything, one small step a day.
Pick a challenge, like push-ups, and do as many as you can in one go. That's your starting point. Each day the app suggests one more than last time, until you reach your goal.
No problem. Your target stays where it was until you log again. There are no streaks to break.
Each challenge can remind you once a day, at a time you choose, in its Settings. If reminders don't arrive, check that notifications are on for One Hundo in the iPhone Settings app.
Everything stays on your iPhone, and your iCloud or computer backup includes it, so restoring a phone brings your challenges back. See the privacy policy.
Found a bug or have an idea? Open an issue on GitHub.