Friends with Habits
Pact with a friend, check in daily, and keep each other on streak
Friends with Habits is a habit-tracking app that pairs you with an accountability partner to help you stick to daily routines. You and a friend make a pact, check in each day with a photo or note as proof, and share one streak that resets if either of you miss. The app removes the private quit option common in solo trackers and makes follow-through social and visible. It's free on Android, with a founder offer to unlock unlimited habits for a one-time $20 payment.
$20 once, lifetime access, unlimited habit tracking, first 5,000 accounts https://habits.therr.com/