Todoist (To do list and reminders). 100k/month iOS & 90k/month Android. Monthly Sub $4/Yearly Sub $36. MinimaList (To do list with an emphasis on home screen widgets). 30k/month iOS. Monthly sub (best seller) and permanent upgrades. Fantastical (Calendar and tasks). 60k/month iOS. Subscription. Microsoft To Do (To do list and reminders). No revenue. Mindlist (List and task manager). <5k/month iOS. $4 premium upgrade. Any.do (To do list and calendar). 70k/month iOS & 80k/month Android. Subscription. TickTick (To do list and calendar). 100k/month iOS & 40k/month Android. Subscription ($3 monthly and $28 yearly). GoodTask (To do list and tasks). 6k/month iOS. $10 premium upgrade. Smart Tasks (To do lists). 9k/month. Subscriptions ($3 monthly and $18 yearly). Note: Good revenue despite weak install volume likely due to sub model. Has the same number of monthly downloads as MindList but presumably double the revenue.