One Calendar

Name: One Calendar
Rating: 4.8 (20521 reviews)
Author: Code Spark

By: Code Spark App

All calendars in ONE place!

Overview

Version:

6.910.3

Last updated: 2026-07-10

Features & Capabilities

One Calendar aggregates all your calendars—Google, Outlook, iCloud, Exchange, Yahoo, and more—into a single, easy-to-read view. It makes it simple to see all your events at a glance.

This Chrome extension brings cross-platform syncing and management to one place, letting you view and edit appointments, events, and birthdays on all platforms.

User Growth & Download Statistics

App Calendar Task Management

By:

Code Spark

Rating:

4.80

(20,521) 12 new ratings

Version:

6.910.3 Last updated: 2026-07-10

Version code:

887524933

Creation date:

2018-05-01

Compatible devices:

Size:

85.49MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-08-01

Compare stats and ranking:

Ranking

# 11,277 ▼ 13

Other rankings

#18 in google calendar keyword 36 ▼ 5#22 in calendar keyword 28 ▼ 6#37 in button for google calendar keyword 37 ▼ 15

Other platforms

One Calendar (v6.901.0)

1,777,710 4.70

(64,334)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Code Spark

Apple Apps Store

https://apps.apple.com/us/app/one-calendar/id1238379385

Website:

http://www.onecalendar.nl

User Reviews

One Calendar is praised for its clear, clean design and strong cross-device/calendar syncing. Reviewers highlight reliable syncing across Apple devices and with Google/Outlook, plus customization options (themes, colors, views) and high-quality widgets. It’s seen as easy to use, with no mandatory subscription and good family/business support. Common concerns focus on widget reliability and gaps on iOS (reloads after Pro, limited widget controls versus Android), customization limits behind paywalls (color/emoji options, backgrounds), and occasional bugs in the interface (invites tab disappearing, repeating events shifting). Overall, it's highly functional with targeted areas for improvement.

Pros

Clear, clean, and user-friendly interface that's easy to navigate.
Excellent cross-device syncing across Apple devices and with Google/Outlook.
Strong calendar integrations (Outlook, Gmail, Google Calendar, iCalendar) with reliable data across calendars.
Rich customization options (themes, personal colors, views) and ability to tailor appearance.
High-quality widgets and strong widget support, including detailed views.

Cons

Widget reliability on iOS is problematic (reloads after Pro purchase and limited widget controls compared with Android).
Customization options are limited by paywalls (color coding, emojis, backgrounds); users want more colors, fonts, and to-do features.
Bugs and stability issues (minor interface bugs, invites tab disappearing, and a repeating-event shift bug).

Recent reviews

I just needed everything in one place - one calendar does that and more. Worth a look!

by Jo*****, 2026-07-21

This seems like a nice capable calendar app but there is no capability to easily transfer your account access from one platform to another, you have to manually enter access codes, not a show stopper but annoying.. When I started working this on MAC, I liked it. Little did I know that when I wanted to use it on my iPhone it’s free to download but there are some very necessary features that you have to pay for like changing calendar colors (if you have more than one persons calendar displayed).