Habitica
- https://habitica.com/
- Retro RPG -game mechanics mixed in a real-life todo -list!
- Create, manage and fulfill Dailies, To-Do’s and Habits!
- Gain experience, coins, levels, items etc from fulfilled tasks!
- Create or join in a party with friends - go to quests or boss fights won by real-life activities!
- Use your hard-earned cash on character items and other rewards (customized included)!
- How high/far can you go?
- Most of the content is free; Registration is required.
GamifyRoutine
- https://gamifyroutine.com/game/
- Manage counters and habits and create skills through them
- Use the productive session for extra experience points
- Come up with rewards when your skills level up or when you fulfill a day’s tasks
- Free; No registrations, runs locally in your browser (I believe you need to export data and import to other devices manually if used on more than one device)


This one? https://play.google.com/store/apps/details?id=com.dessalines.habitmaker