One Calendar

10.0.102

Code Spark

4.69

60,901 reviews

1,000,000+
Downloads

Free

Manage all your calendars in ONE place!

Download from Google Play

About One Calendar

One Calendar is a productivity app developed by Code Spark.

Download Statistics

One Calendar has been downloaded 1.8 million times. In the last 30 days, the app was downloaded 8.6 thousand times.

User Ratings

One Calendar is rated 4.69 out of 5 stars. The rating is based on 61 thousand ratings.

App Information

One Calendar is FREE to download. The APK download size is 71.00 MB. The latest version available is 10.0.102. The last update was on August 11, 2026.

Technical Requirements

One Calendar requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play April 2018.

Description

The most popular app to view all your calendars like Google, Live, Outlook, iCloud, Exchange, Office365, Yahoo, Nextcloud, Synology, GMX, Mailbox.org, ownCloud and more.

More data about One Calendar

Price	Free to download
Total downloads	1.8 million
Recent downloads	8.6 thousand
Rating	4.69 based on 61 thousand ratings
Ranking	Not ranked
Version	10.0.102
APK size	71.0 MB
Number of libraries	39
Designed for Android	6.0+
Suitable for	Everyone
Ads	NO ads

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Alternative downloads for the One Calendar app

One Calendar compared with similar apps

Common keywords of similar apps

Onecalendar Calendars Manage View

Keywords missing from this app

Calendar Events App Event Day Google Tasks Schedule Planner Features Appointments Agenda Week Year Add Reminders Month Sync Business Widgets Views Time Meetings Options Support Create Easy Exchange Overview Family Outlook Multiple Widget Free Set Work Settings Personal Scheduling Stay Easily Professional Move Display Supports Place Choose

Google Play Rating history and histogram

Rating history

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51K

6.2K

1.5K

470

Downloads over time

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One Calendar has been downloaded 1.8 million times. Over the past 30 days, it averaged 290 downloads per day.

Changelog of One Calendar

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Developer information for Code Spark

Code Spark

support.android@onecalendar.nl

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Comments on One Calendar for Android

★★★★☆ Greg Beyer · Aug 4, 2026

Would really like ability to snooze reminders and be able to invite other people to my calendar event. Syncs with many different calendar providers. Lots of feature & appearance customizations. With Nextcloud calendar, do not need To Google as central location of my calendar. Now I can sync my calendar on any mobile device AND desktop without sharing my data with Goog.

★★★★★ Allen Rice · Aug 25, 2026

UPDATE 8 23 2026 used for years its syncs with Windows 10 all the back to win 7. Its really good only one thing needs added, Google allows you to set multiple alarm times which is wonderful for busy people. If you only have 1 or 2 appts its no big deal but ifbyou have 10 or more it's a lifesaver. Bigger easy to read list and month view above it. It syncs with Google outlook icloud yahoo

★★★★★ Jolie Brown · Jul 23, 2026

I hand been maintaining two calendars for quite some time. Finally, I found One Calendar. All my appointments are now in the same place! Great way to ensure I don't miss any commitments during my day.

★★☆☆☆ JJO O · Jun 20, 2026

Font is WAY too small for the month widget view. I can barely read my appointments. I tried changing the font size in the android tablet settings and it didn't change the font at all. Add a setting to adjust the font size in the month widget please.

★☆☆☆☆ Kate Kramer · Jun 26, 2026

Would not connect to my iCloud, despite following the directions.

★☆☆☆☆ B P · Jun 16, 2026

Please stop with the annoying feedback reminders. I would have given it 5 stars, but this is for those reminders.

★☆☆☆☆ Tom Insley · Aug 27, 2026

Deleted the app. Didn't sync with the calendar in my Outlook for Android - in other words, useless.

Google Play Rankings for One Calendar

This app is not ranked

Technologies used by One Calendar

13 permissions · 39 libraries

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