Your calendar already knows where you need to be. The problem is the way it tells you. A small banner slides in, sits there for a few seconds and disappears into a pile of other notifications. If you were on another call, driving or deep in a task, you never saw it.
The short version: a calendar reminder app that calls you reads the events you already have in Google Calendar, Outlook or your iPhone calendar and rings your phone before each one, with a voice that tells you what is starting. No extra reminders to create, no new to-do list to keep. This guide covers how it works with each calendar and how to set it up.
What a Calendar Reminder App That Calls You Actually Does
Most reminder apps make you enter reminders by hand. That is exactly where things slip: the events you miss are usually the ones you never got round to setting a reminder for. A calendar reminder app works the other way round. It connects to the calendar you already use and treats every timed event as something worth a call.
It watches your calendar. New events, moved events and cancelled events are picked up automatically, so the call always matches what is actually on your schedule.
It rings at the time you choose. From the start time itself up to an hour before, depending on how much warning you need.
It tells you what is next. When you answer, a voice reads out the event title, so you know whether to grab your laptop or your car keys.
Google Calendar
Google Calendar's own reminders are notifications and emails. Neither one rings. To get a phone call, sign in at web.remindavo.com, connect your Google account and pick which calendars to watch, including shared and work calendars on the same account. Remindavo reads event times and titles only and never edits your calendar. There is a step-by-step walkthrough in our Google Calendar phone call reminder guide, and a version for video calls in Google Meet reminders.
Outlook and Microsoft 365
Outlook pop-ups only help if Outlook is open on a screen you are looking at. Connect your Outlook.com or Microsoft 365 account in Remindavo and the same call-before-every-event setup works for your work meetings, wherever you are. Meetings that the organiser cancels are dropped automatically, so you will not be called for something that is no longer happening. See the Outlook calendar phone call reminder guide for details.
iPhone and Android
On a phone, the Remindavo app can read the calendars already on your device, including iCloud calendars on iPhone, and turn each event into a full-screen incoming-call alert. That part is free. Premium adds real phone calls placed from our servers plus realtime Google and Outlook sync, so calls keep coming even when the app is closed. More in our Apple Calendar and Android calendar guides.
| Your calendar | How to connect | What rings |
|---|---|---|
| Google Calendar | Connect Google at web.remindavo.com | A real phone call to your number |
| Outlook / Microsoft 365 | Connect Microsoft at web.remindavo.com | A real phone call to your number |
| iPhone (incl. iCloud) | Remindavo app reads your phone's calendar | Full-screen call alert (free); real calls with Premium |
| Android | Remindavo app reads your phone's calendar | Full-screen call alert (free); real calls with Premium |
How to Set It Up in Five Minutes
Sign in. Go to web.remindavo.com or install the app, and sign in with your name and email.
Connect your calendar. Choose Google or Outlook, then tick the calendars you want calls for.
Verify your phone number. Calls work on mobiles in more than 50 countries.
Set your timing and quiet hours. Pick how early the call comes, and set hours when you never want to be rung.
Test it. Add an event fifteen minutes from now and wait for the phone to ring.
Tip: the call reads your event title out loud, so “Client call with Priya, Zoom link in invite” is far more useful than “Priya”. If you have long-running recurring events you do not need calls for, you can switch calls off for recurring events in settings.
Who Uses Calendar Reminder Calls
People who live in back-to-back meetings use it so a call pulls them out of the last one in time for the next. Field workers and drivers use it because a ringing phone is the only alert they hear on the job. People who find notifications easy to miss, including many with ADHD, use it because a call is harder to ignore; see our ADHD reminder app article. Small teams use it so nobody misses the client call that pays the bills.
Still comparing? Read the best reminder apps that call you, or see why a phone call reminder app beats another notification.