Whitespace.
See who already built your idea — and the space they left open.

CLUSTER TIME-REMINDER-NOTIFICATIONS · 32 ENTRIES · EARLIEST ENTRY 2021-01-03

Simple reminder scheduling apps

This cluster consists of basic reminder apps focused on scheduling one-time or recurring date-and-time notifications, with options for custom messages and alert types. Dated entries appear irregularly from October 2011 through July 2026, with the most entries in any single month being three (July 2025) and some months having none, indicating a sparse, long-tail pattern rather than a concentrated burst. On traction, Stochastic Reminder, tides-up, and Al-Toque all show zero stars, suggesting minimal user engagement or adoption.

Entry timeline

ENTRY TIMELINE

OCT 2011: 1JUN 2012: 1JUN 2014: 1SEP 2014: 1MAR 2016: 1AUG 2016: 1NOV 2016: 1DEC 2016: 1FEB 2019: 2DEC 2019: 1JAN 2021: 1OCT 2021: 1AUG 2022: 1JUL 2023: 1JUL 2025: 3NOV 2025: 1DEC 2025: 1APR 2026: 1JUL 2026: 2AUG 2026: 3SEP 2026: 2OCT 2026: 4
OCT 2011OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 2 hand-coded · 17 unlabelled

Operator · 7 hobby · 1 indie · 2 commercial · 9 open source · 1 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01retis-public0★3 daysliveindieMobile app that reminds users to stay in touch with important people by scheduling recurring contact reminders at chosen times.
  2. 02reReminder0★16 daysliveopen sourceMobile app that lets users schedule multiple recurring reminders with independent timers, intervals, and personalized notification messages.
  3. 03Stochastic Reminder0★1 moliveopen sourceReminder app that schedules weekly fixed and random notifications with custom titles, messages, and alarm types.
  4. 04retis-app0★3 days—hobbyMobile app that tracks personal connections and schedules recurring reminders to reach out, with customizable intervals and daily notification times.
  5. 05yaad-dila0★6 days—hobbyAndroid app that schedules recurring reminders with push notifications and voice input, available in English and Hindi.
  6. 06tides-up0★16 dayslivehobbyWeb app that schedules recurring reminders with min/max intervals and sends email notifications before deadlines.
  7. 07remindly0★13 days—hobbyReminder app that shows category-based meme stickers in floating overlays and supports notifications and snooze actions.
  8. 08sheet-driven-whatsapp-reminder0★4 days—hobbyApp that reads a spreadsheet and sends scheduled reminder messages to contacts at the chosen times.
  9. 09Reminduck0★23 dayslivehand-codedopen sourceReminder app that lets users schedule simple one-time or recurring reminders with a specified time and date.
  10. 10remindly-smart-scheduler0★1 moliveai-builthobbyWeb app that schedules and sends customizable email reminders with attachments over multiple configurable date periods.
  11. 11Reminder with Voice Reminders0★29 dayslivecommercialMobile app that creates recurring voice, music, and alarm reminders for events, tasks, and daily routines with flexible scheduling options.
  12. 12Reminder, Reminders with Voice0★2 molivecommercialMobile app that lets users create custom recurring reminders with personalized voice or music alerts for daily, weekly, monthly, or one-time events.
  13. 13Wake Up Call App: Phone Alarm0★2 moliveMobile app that places real phone call reminders for wake-ups, medications, meetings, and deadlines instead of relying on push notifications or alarms.
  14. 14Exercise Reminders0★2 moliveopen sourceMobile app that sends scheduled notifications reminding users to perform configurable exercises throughout the day.
  15. 15Lembra0★2 moliveopen sourceOffline app that manages recurring reminders for vehicle, home, pets, and appointments, with categories and local notifications for each scheduled occurrence.
  16. 16Remind Me!0★4 moliveopen sourceMobile app that sets alarms for specific future dates, providing a stronger reminder than notifications.
  17. 17Reminduck0★9 mostaleliveopen sourceSimple reminder application for setting one-time or recurring date-and-time notifications to help users remember tasks and events.
  18. 18Insistent0★8 mostalelivehobbyMobile app that repeatedly re-issues reminders for tasks, pills, bills, or chores until the user responds, with recurring scheduling options.
  19. 19SimpleReminder0★10 mostaleliveopen sourceReminder app for quickly scheduling one-time notifications with custom messages and times.
  20. 20Wi-Fi Reminders0★6 yrabandonedlivehand-codedopen sourceMobile utility that triggers custom reminder notifications when the device connects to specified Wi-Fi networks or cell towers.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.