About this app
When did you last wash the car, play tennis, go to the gym, water the plants, call family, or have coffee? WhenDid gives everyday moments a simple timeline. Create a tracker for anything worth remembering, log it in seconds, and add a date, time, intensity, or note whenever context matters. SEE YOUR HISTORY CLEARLY • Review every occurrence in one place • Correct the date, time, intensity, or note at any time • Explore timelines, monthly frequency, and typical gaps • Archive old trackers without losing their history SPOT RECURRING PATTERNS After enough history is available, WhenDid estimates when a recurring event may happen next. Forecasts use only your own on-device history and include a reliability signal and estimated time window. They are pattern estimates, never certainties. PRIVATE BY DEFAULT • No account • No ads or analytics • No cloud service or internet dependency • Your tracker content stays on your device unless you export or share it OWN YOUR DATA Export a readable JSON backup whenever you like. Restore it later with validated import, edit or delete individual entries, or erase all WhenDid data from Settings. WhenDid is a memory and lifestyle tool. Its forecasts are not medical advice and should not be used for diagnosis, treatment, emergencies, or safety-critical decisions.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 1, 2026 · 2:05 PM Free
Screenshots
