You think of it in the shower, you mean to do it after lunch, and by evening it is gone. A reminder is the fix for exactly that kind of forgetting — and you do not need to download anything for it. Every iPhone and Android phone already has a free reminder app built in. Set the task once with a date and time, and your phone taps you on the shoulder at the right moment.

iPhone: set a reminder with the Reminders app

Apple's Reminders app is free and already on your iPhone. The quickest way to set a reminder takes less than a minute:

  1. Open the Reminders app.
  2. Tap + New Reminder, then type what you need to remember.
  3. Tap the Date and Time button above the keyboard. Choose Today, Tomorrow, This Weekend or Next Week, or tap Custom to pick your own day and time.
  4. Tap Done. The due date appears under the reminder's title.

If you set a date but no time, the notification arrives at 9:00 AM that day. To change that default, go to Settings, then Apps, then Reminders, and tap the time under All-Day Reminders. For more control, tap the reminder and then the info button (the small "i") to open Details: there you can set a Repeat schedule, an Early Reminder for an extra heads-up, a Location alert, a priority, notes and subtasks.

A location reminder fires when you arrive at or leave a place. Tap the Location button, pick one of the suggested places or tap Custom to add your own, choose arriving or leaving, and set the area. Location Services must be turned on for this to work: Settings > Privacy & Security > Location Services.

On iOS 26.2 and later, a reminder can also ring like an alarm. Open the reminder, tap the info button, and under Date & Time turn Urgent on — if no date and time are set, they default to the next hour. Apple says the alarm activates even when the device is silenced or a Focus is on. Make sure Reminders is allowed to use alarms: Settings > Apps > Reminders, and turn on Alarms under Allow Reminders to Access.

Android: set a reminder with Google Tasks

On Android, Google Tasks is the built-in route. It is free, it syncs with your Google account, and any task with a date also appears in Google Calendar:

  1. Open the Google Tasks app.
  2. Tap + New task and type what you need to remember.
  3. Tap the task to start editing it, then set a date and time. Google notes you can only set a due date once you have started editing the task.
  4. To make it repeat, select the date and time and tap Repeat, then choose how often.

Google says you get a notification at the scheduled date and time. A task with a date but no time notifies you at 9:00 AM, and a task with only a deadline notifies you on the deadline day at 9:00 AM local time. To finish a task, tap the circle to the left of it. One limit to know: tasks that already have subtasks cannot be set to repeat.

Samsung Galaxy: use the Reminder app

Samsung phones have their own Reminder app, and Samsung's own guide describes it in a few lines:

  1. Open the Reminder app.
  2. Tap Add (the plus sign) at the bottom.
  3. Type the reminder, add a time or a place if you want an alert tied to one of them, then tap Save.

To finish a reminder, tap the circle to the left of it, or tap the reminder and then tap Complete. To change it later, tap the reminder and tap Edit — you can change its name, time and place. For a place alert, choose Place and pick a location, then choose whether to be alerted when you arrive or when you leave. Samsung also lets you sync reminders with Microsoft To Do, so they show up in Outlook: open Reminder, tap Microsoft To Do, and sign in with your Microsoft account.

Make a reminder repeat

A one-off reminder helps once. A repeating one handles the weekly shop, the monthly bill and the daily dose without you setting it again:

AppHow to repeat it
iPhone RemindersOpen the reminder, tap the info button, tap Repeat and choose Daily, Weekly, Monthly or Custom
Google TasksSet a date and time, then tap Repeat and pick the pattern
Samsung ReminderWhen choosing a time, pick the days of the week for a weekly pattern

On iPhone, a repeating reminder moves to its next date after you check it off — completing it does not delete the series. In Google Tasks, change the date and time of just the next one by tapping its date, or edit the whole series from the repetition info at the bottom. If a repeat is not offered, check that the reminder has a date set first: on iPhone, Repeat only appears once the reminder is scheduled.

Reminder vs alarm: which one to use

They look similar but they solve different problems. A reminder is a task with a nudge: it appears as a notification, stays in a list until you tick it off, and can repeat, carry notes and subtasks, or fire at a place. An alarm is a time signal: it rings loudly at a set time, even in Silent mode and with Do Not Disturb on, and then it is done.

Use a reminder when the thing itself matters — "buy milk", "call the bank", "water the plants". Use an alarm when the moment matters — waking up, or something that must interrupt you at an exact time. If you need a wake-up alarm that only rings on workdays, our guide to setting a weekday alarm covers the Repeat-days setup on iPhone, Google Clock and Samsung. The one exception is an urgent reminder on iPhone with iOS 26.2 or later, which rings like an alarm and cuts through silence and Focus — for everything else, a reminder is a quiet notification, not a wake-up call.

If your reminder never shows up

FAQ

Can I set a reminder without a date?

Yes. Type the task and save it without a date or time, and it simply sits in your list until you tick it off. Add a date later whenever you want the phone to nudge you. If you add a date but no time, both Apple Reminders and Google Tasks notify you at 9:00 AM that day.

How do I set a reminder for when I get home?

On iPhone, open the reminder, tap the info button, tap Location, and choose your home address with "Arriving". Or ask Siri: "Remind me when I get home to check the mail." On Samsung, create the reminder, choose Place, pick your home address and select Arriving. Location Services must be on, and your home address needs to be saved for Siri to use it.

Can a reminder ring like an alarm?

Normally, no — a reminder arrives as a notification with your usual notification sound. The exception is iPhone on iOS 26.2 or later: mark a reminder Urgent in its Details and Reminders schedules an alarm for it, which activates even when the device is silenced or a Focus is on. On Android there is no built-in equivalent, so use a Clock alarm for anything that must wake you.

How do I set a reminder for every weekday?

On iPhone, open the reminder, tap the info button and tap Repeat, then choose Custom and tick Monday to Friday. In Google Tasks, set a date and time and tap Repeat to pick the pattern. On Samsung, choose the days of the week when setting the reminder's time. A repeating reminder moves to its next date each time you complete it.

Do reminders sync between my phone and my computer?

Yes, when the app is set to sync. iPhone reminders sync through iCloud when Reminders is turned on under Settings > [your name] > iCloud. Google Tasks and Keep sync with your Google account, so the same tasks appear on the web. Samsung reminders sync through your Samsung account, or through Microsoft To Do if you connect it.

How do I delete or complete a reminder?

To complete one, tap the empty circle next to it. To delete one on iPhone, swipe left on it and tap Delete — deleted reminders stay in Recently Deleted for 30 days and can be recovered. In Google Tasks, tap the task to edit it, then delete it from there. On Samsung, tap the reminder, tap Delete, then tap Move to trash.

Sources checked on 2026-11-07: Apple Support: Use Reminders on your iPhone, Google Tasks Help: Add or edit a task, Samsung Support: Use your Galaxy phone's tools to stay organized.