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

CLUSTER TASKS-NOTIFICATIONS-REMINDERS · 25 ENTRIES · EARLIEST ENTRY 2026-07-10

Todo reminder apps

This cluster consists of basic to-do and task management apps whose core function is creating tasks and delivering due-date reminders via notifications. Dated entries are sporadic from April 2016 through October 2025, then appear monthly from April to July 2026, indicating a gradual increase in entry frequency in recent months. The traction leader is dot-tasks with 4 activity stars, while the other two members have 0 stars.

Entry timeline

ENTRY TIMELINE

APR 2016: 1SEP 2024: 1JUL 2025: 1OCT 2025: 1APR 2026: 1MAY 2026: 1JUN 2026: 1JUL 2026: 1AUG 2026: 3SEP 2026: 7OCT 2026: 7
APR 2016OCT 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 · 1 hand-coded · 18 unlabelled

Operator · 10 hobby · 1 indie · 1 open source · 8 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. 01dot-tasks4★5 dayslivehobbyAndroid to-do app that keeps tasks end-to-end encrypted and delivers reminders that ring like a phone call.
  2. 02mac-reminders-sync-obsidian1★todaylivehobbyObsidian plugin that bidirectionally syncs tasks between Apple Reminders and a to-do note, with configurable sync intervals.
  3. 03Notify_hub_v20★4 days—Team reminder and notification platform with scheduled alerts, user roles, and department management.
  4. 04TaskReminder0★5 days—Task app that manages to-do items and sends reminders and notifications for upcoming tasks.
  5. 05notifymaster0★6 daysliveWeb app that lets users create, schedule, and manage notifications for their tasks and apps.
  6. 06notification-reminders0★6 days—hobbyAndroid app that monitors incoming notifications and reminds users about related to-do items.
  7. 07cshare_web0★10 days—Web app that manages assignments and sends scheduled reminders and push notifications to users.
  8. 08Dask0★24 dayslivehobbyRecurring task reminder app that schedules periodic chores and sends notifications.
  9. 09bobo-todo0★15 daysliveindieCross-platform to-do app with desktop, Android, and web clients that syncs across accounts, sorts by deadline, and sends custom reminders.
  10. 10DuckNoti0★25 days—hobbyMobile app for taking notes and setting task reminders, with a home-screen widget that shows countdowns and alerts when tasks are due.
  11. 11todo-reminders-app0★4 days—Todo reminder app that lets users create tasks and receive alerts when tasks are due.
  12. 12maintenance-is-coming0★1 molivehobbyApp that notifies users about upcoming maintenance schedules and reminders for their assets.
  13. 13Personal-Todo-Assist0★20 days—Desktop todo app with AI natural-language task entry, exact-time alarms, and two-way Telegram sync for mobile reminders.
  14. 14modo0★22 days—hobbyTodo app that helps users manage tasks and time, with reminders delivered as notifications.
  15. 15pisilist9★3 moliveai-builthobbyCollaborative task management app for assigning tasks to coworkers and setting multiple reminder notifications per task.
  16. 16Al-Toque0★1 mo—hand-codedhobbyMobile app that helps users manage tasks, set reminders and alarms, schedule recurring activities on selected days, and customize notification sounds.
  17. 17task-manager-Agent0★28 days—Task manager that prompts for daily tasks and sends automated reminders every few hours until deadlines.
  18. 18Fatto0★10 daysliveopen sourceAndroid app that syncs with Taskwarrior servers to let users manage tasks, projects, and tags with reminders and notifications.
  19. 19assistente-pessoal0★2 mo—hobbyPersonal assistant app that sends push notifications before scheduled tasks, using Notion as the task source and an always-on cloud service.
  20. 20zvokuita-v20★2 mo—To-do app that lets users organize tasks into categories and receive due date alerts.

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.