Keep Reminders Fresh: Never Resend Yesterday’s
Copies it for your coding agent, which checks the fit and builds it · The whole record, as markdown
Duolingo designed its notification system to avoid settling on the same template for each person. A simple no-last-repeat rule is a practical adaptation for an app that does not have enough data for a learning bandit.
Direct research included. Read the findings and limits.
- 3 entries · direct research
- 1 entry · related research
From Duolingo, Drink Less
Overview
Keep recurring reminders fresh with a small pool of useful messages. Pick a variant at each send, skip the one this person got last, and log the choice so you can learn which messages lead to action.
Fits when
- Apps that already send a recurring reminder and can write four or five honest variants of it
- Products whose reminder is one fixed sentence today
- Teams that can log the chosen variant, completed tasks and notification opt-outs
Evidence & sources 4 entries
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Good to knowFit and evidence notes
- Fit to consider
- Measure retention separately from opens: Drink Less found no significant difference in time to disengagement between reminder policies.
- About the evidence
- The simple no-last-repeat rule has offline support from Duolingo, but no isolated live test; Drink Less found varied and fixed reminders similarly effective.
Copy includes 2 more limitations, 2 failure modes, the full evidence, and adaptation guidance.
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