Random reminders vs. scheduled alerts: when to use each

Use a fixed reminder when the time matters. Use a random reminder when any moment inside a window would work. A meeting needs a calendar alert; a prompt to write a few lines in your journal can arrive at a less predictable moment.

Neither approach guarantees better memory or productivity. The useful question is whether the reminder arrives when you can do something with it.

Fixed times make a clear commitment

A scheduled alert is a good fit for an appointment, a deadline, or a routine that must happen at a particular hour. You know when to expect it and can plan around it.

Use the calendar or task tool you already trust for appointments. In Untimely, fixed-time schedules let you choose a time and timezone for recurring email or webhook actions. Delivery is processed by the scheduling service, so treat it as a recurring prompt rather than a second-precise alarm.

Random windows leave the moment open

A random reminder has boundaries: an interval, a number of occurrences, allowed days, and a time window. Its timing varies within those rules.

For example, a weekly “send someone a hello” reminder does not need to arrive every Monday at 9:00. A random window lets you keep the intention without reserving that exact slot.

Untimely delivers reminders by email. It does not require a mobile app, but seeing the message depends on when you check your inbox and your email notification settings.

Choose by the task

What you want to do	Useful starting point	Why
Join a meeting	Fixed calendar alert	Everyone needs the same time
Review a deadline	Fixed reminder	The date and hour matter
Write a journal entry	Random window	Several moments could work
Check in with a friend	Random window	The intention matters more than the hour
Start a daily report	Fixed schedule	Downstream work may expect it
Receive a creative prompt	Random window	You want an occasional interruption

Make the window realistic

Choose a period when you are likely to welcome the message. Begin with one occurrence per interval. If you keep dismissing it, change the wording, narrow the window, reduce the frequency, or pause it.

Random windows in Untimely currently use UTC. Convert your preferred hours before saving and check them again when your local clocks change. Fixed schedules use the selected timezone.

Try one of each

Keep a fixed reminder for a task that genuinely needs a time. Add one flexible prompt, such as “What would you like to make progress on today?”, inside a suitable random window.

Create an event, choose Email, and enter your message. You can inspect run history and adjust the schedule from the dashboard. The free plan supports three events; see pricing for current limits.

For messages you can adapt, see 10 everyday uses for random reminders. For the product walkthrough, visit the random reminder app page.