Is there a good app for schedule events and reminders?
Prime Gap: 48 apps already serve this, and 104 data points mined from real user reviews across 4 sources show where they fall short. Heavily used and done badly — the most disruptable kind of gap.
Data refreshed July 20, 2026 · scores recompute weekly as new reviews are mined, so re-check before you build.
What users complain about
The most common complaints behind apps that try to schedule events and reminders, mined and clustered from real reviews:
| Complaint area | Type | Mentions | What a user said |
|---|---|---|---|
| audible reminder alert | missing-feature | 5 | Erinnerungsnotiz wird nur visuell gezeigt |
| reminder delivery | reliability | 2 | I either didn't get the reminder, or the reminder is not persistent enough to get noticed |
| schedule events in advance | missing-feature | 1 | schedule an event ahead of time to post on a certain day at a certain time |
| calendar view of reminders | missing-feature | 1 | The only thing missing is a calendar format so you can see your diary before scheduling |
| merge calendar with reminders | missing-feature | 1 | Merge it with reminders |
| exact-time reminder scheduling | ux | 1 | sends multiple notifications before the deadline, rather than at the exact time I specified |
| calendar and reminders not combined into one app | missing-feature | 1 | why is there a seperate reminders app? Why can’t apple combine both? |
| no Reminders integration for scheduling notes | missing-feature | 1 | why no direct integration with Reminders ... for actual scheduling of actionable notes? |
| optional time reminder on date | missing-feature | 1 | не нравится обязательная установка напоминания по времени, если выбирать дату |
| alternate-day recurring reminders | missing-feature | 1 | Kindly add provision to set reminder for alternate days too, which is no way possible now |
| grouping/bundling reminders | missing-feature | 1 | life reminders needs to have grouping or bundling of multiple reminders |
| limited reminder timing options per task | missing-feature | 1 | more insight to add with option for how many Variables of time etc; per task in REMINDING |
Apps that already serve this
| App | Rating | Ratings | Price |
|---|---|---|---|
| Calendar · Planner & Reminders | 4.6 | 59,069 | Free |
| Alarrrm - Future Event Alarm | 0.0 | 0 | $0.99 |
| Reminder & Countdown Pro | 4.8 | 3,191 | $1.99 |
| Reminders | 4.8 | 952,059 | Free |
| Calendar | 4.9 | 1,515,223 | Free |
| Reminders with Voice Reminder | 4.7 | 755 | $1.99 |
| Calendars: Schedule Planner | 4.7 | 120,481 | Free |
| Due - Reminders & Timers | 4.7 | 2,780 | $7.99 |
Should you build it?
Heavily used and done badly — the most disruptable kind of gap. Opportunity here scores 94 out of 100 — a function of demand, how crowded the field is, and how badly the existing apps perform. Use the live map to compare it against adjacent tasks.
Who has tried building this
4 attempts, 3 active but all under 36 stars; a small live field of calendar apps with no traction leader.
| Project | Status | Stars | Stack |
|---|---|---|---|
| Hazrat-Ali9/Calendar | active | 36 | JavaScript |
| inchussa/Calendar-App | active | 25 | |
| twilio-labs/sample-appointment-reminders-node | active | 22 | JavaScript |
| gameappstudio-official/alarm-manager-notification | stale | 20 | Java |
Open-source projects that attempted this task — active ones show today's bar; abandoned ones are a signal to validate why earlier attempts died.
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