Randomize Reminder Alarms
Studies have shown people are more prone to respond to reminders if they aren't routine, if they have a random element to them. Offering a timeframe during which users might be reminded or a number of days ("remind me about every 3 days" would trigger reminders with an average of 3 days, maybe on the 3rd, 6th, 7th, 10th, and 15th day after) would be more effective.
MuscleMo shared this idea
Thanks for the suggestion! We’ll definitely consider it as we improve our notification system. If you can share a link to the specific research you mentioned that would be great. Thanks!