---
title: "One Calendar - Reviews, Revenue and Downloads in United States | Apple App Store"
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. OneCalendar integrates all you"
---

# One Calendar — United States
> All calendars in ONE place!

![One Calendar App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/fe/04/29/fe0429a2-6d1c-49ae-ca40-d90d4c83b1f8/AppIcons-0-1x_U007epad-0-1-0-85-220-0.png/434x0w.png)

**Developer:** [Code Spark](https://apptail.io/developer/code-spark-wPrb)
**Category:** Productivity
**Rating:** 4.8/5 (20,267 ratings)
**Price:** Free
**Bundle ID:** biz.codespark.xcalendarapp.native.ios
**Store:** Apple App Store
**Country:** United States
**Version:** 6.901.0 (released 2025-12-12)
**Original Release:** 2018-05-01
**Languages:** Danish, Catalan, Hindi, Turkish, German, Italian, Czech, Japanese, French, Polish, Chinese, English, Dutch, Portuguese, Spanish, Korean

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1238379385)
**AppTail Page:** [https://apptail.io/app/one-calendar-YJI/united-states](https://apptail.io/app/one-calendar-YJI/united-states)

## One Calendar 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. OneCalendar integrates all your calendars into an easy-to-read overview. View and manage all your appointments, events and birthdays.
  
OneCalendar is available on all platforms.

## One Calendar Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/63/11/40/631140ce-bfe1-94eb-2a62-ec2d99fb6c8a/1e62a689-21ce-4137-a3a8-72e88301014a_1-6.5_inch_-_iPhone_XS_Max-clear_overview.jpg/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/86/a7/6b/86a76b84-b746-4274-8125-e79418116dd0/05ee97f2-4b73-4217-b401-e41779af2b66_2-6.5_inch_-_iPhone_XS_Max-beautiful_design.jpg/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/5e/3f/e6/5e3fe65f-5519-d31c-9e8d-218f657f2952/da5b3b84-78be-4023-ac9b-f7f18597eb29_3-6.5_inch_-_iPhone_XS_Max-multiple_views.jpg/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/bc/1e/cb/bc1ecb10-24a6-c2ea-13bd-c65ac8c7c55f/d2467349-a96c-4105-a767-dd7038d53dce_4-6.5_inch_-_iPhone_XS_Max-multiple_views.jpg/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/f5/b3/c7/f5b3c704-62d6-6c7f-a235-4cbcc471ea00/5e0eef7d-9916-46f4-a829-d33678bc417a_5-6.5_inch_-_iPhone_XS_Max-personalized_theming.jpg/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/8b/94/bc/8b94bcdb-2098-935b-3f6d-fd6cae8671e1/8fe61ea1-66c7-413c-852c-f6f460e9bb9b_6-6.5_inch_-_iPhone_XS_Max-simple_and_easy_to_use.jpg/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/cd/67/7f/cd677f69-79e5-0eb9-726c-7aa2591587c3/0585eb09-b48d-4985-a9ff-65f6f85ffd89_7-6.5_inch_-_iPhone_XS_Max-supports_all_calendars.jpg/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/56/82/26/56822690-4a09-c591-29d7-6a28f55e2df5/77bb56ce-35b7-4d90-b93e-dc20aae881f0_8-6.5_inch_-_iPhone_XS_Max-at_a_glance_widget.jpg/1242x2688.png)

## One Calendar Rating Breakdown in United States
- 5 stars: 16,706 (82%)
- 4 stars: 2,629 (13%)
- 3 stars: 655 (3%)
- 2 stars: 130 (1%)
- 1 stars: 147 (1%)

## One Calendar Reviews in United States

### **--- "Not what I would use indefinitely"
It's a functional app and can do what I need it to, except sync to my iCal. I have deleted the accounts and readded, but still there is no syncing. I didn't mind paying for the app when it was working as the price was reasonable for what the app offered. Forget about support helping. They have been of no help and send solutions for issues that do not pertain to syncing.
-- Douglas Clan Six, 2025-01-11

### ****- "The best Calendar app"
I decided to come do a review for this app for two reasons, number one is that it is one of the best calendars I’ve ever used since the modern cell phone/app tools have become mainstream in all of our lives. The user interface is super simple. Everything about this calendar is enormously, simple and very easily integrated into my daily work, habits and schedule. The only is that you cannot copy and paste phone numbers or addresses on the phone app. You can do it on the desktop but not on the mobile app. Why is this an issue? Because if you need to call a customer or text a customer you cannot copy and paste the number. If you need to add the address Somewhere, you cannot copy and paste the address. I think these are the only two things I’ve ever seen that I would ask your company to address other than that. There is simply no other calendar that I’ve used, and I’ve used salesforce and many other work calendars, none of them work as well as this calendar. Thanks.
-- S. W. Biddulph, 2025-01-06

### **--- "calendar"
would like to be able to categorize with different colors.
-- add to the calendar, 2024-12-28

### ***-- "major feature missing"
once an appointment is placed in a calendar, it can not be moved to a different calendar. the only option I had was to recreate the appointment on the new calendar.
-- JerryW08, 2024-12-10

### ***-- "DONT WASTE MONEY ON PREMIUM"
This calendar is a great idea and overall easy to use! However, I paid for premium in order to change the colors of my events. I desperately need to be able to color code each type of event but for $5.99 the app changed the colors of the events based on what calendar it came from. So, for example, all apple calendars events are one color and all Microsoft calendar events are another. This doesn’t help me at all!! I need to be able to define each event by color and therefore I can’t organize at all! The value for the price is absolutely not there. If you are looking for a basic app that puts in all in one place and you don’t need any other features then this app still functions for free! Being able to change the colors is such a basic request, I can’t understand why the company won’t, there’s a lot of people online also requesting it. If you have a busy day to day schedule and need the colors to help organize the types of events than this isn’t it.
-- redlalala, 2024-12-09

### ***** "Best Calendar App for merging multiple sources"
I really like this app. I tried several other ways to get my calendars syncing to a single source, but this was the only one that actually worked.
-- David F-Arkansas, 2024-12-06

### ****- "Great App"
I’d give it a five star review, but when you pay for the premium upgrade, and it says for all devices, that’s what you should expect. It didn’t go to all my devices.
-- Bvrdad54, 2024-12-05

### ***** "Easy to Use, Works great!"
I have been using the One Calendar app for 3 months to bring my Google Calendar and Apple Calendar appointments to one location for review.   This is a wonderful tool:  easy to use and accomplishes the task quickly and accurately.  Thanks so much!
-- BigChame, 2024-12-03

### *---- "Not standalone"
You can’t add events to this calendar by itself. You are required to link it to some other calendar application.
-- Sebrox22, 2024-11-23

### ***** "Good"
Very good
-- ruunmed, 2024-11-22

### ***-- "Help"
I paid for a license version and never got it
-- dezdav30, 2024-11-21

### *---- "Won’t authenticate"
I’ve wasted a good 30 minutes… The app will not send a code to my galaxy S 22+. I tried another option of sending to my galaxy S9 plus. I requested eight different codes be sent to two different devices and it just will not send the code to authenticate. This was a total waste of time, don’t bother. Now my Google account is flashing all kinds of security risks and blocking my account because it think someone is trying to hack my account,  and won’t let me login or get a code . 👎
-- Darthur35, 2024-11-20

### ****- "Good App, but font is very small"
This app is nice but would be much more user-friendly if the font was larger.  Is there anyway to enlarge it?
-- GrainneGirl, 2024-11-14

### ****- "I recommend 1 improvement"
After using the app I realized that once the month ends the calendar prior should change colors to not get confused at looking for current events.
-- save&, 2024-11-06

### ***** "Exceptional Calendar Option"
I really like having this calendar. It’s made my life easier in many ways. If you need a calendar that can sync with all your others and keep everything clean and together, this is definitely a great option!
-- Nettabb20, 2024-11-03

### ****- "Worth the price"
I love this app. The color coding options are a must have for me as I manage appointments for others. The only reason I did not give 5 stars is I cannot view it on my Apple Watch.
-- PBurg85, 2024-10-31

### ***** "Absolutely the Best"
One Calendar is my favorite calendar app - and I’ve tried dozens. It’s so easy to use and displays just the right amount of information amongst its various views.
-- Sun Viking, 2024-10-29

### ***** "Great Plannar"
Super cool frog calendar theme and multiple others. Pretty easy to use aswell just click on dates and add events. you can schedule the event to repeat sertain days and weeks. 
(Super Efficient/ Super Clear)
-- reesedowell, 2024-10-17

### ***** "Review"
That app is fantastic and so happy it’s free. Definitely would pay a monthly fee to have it. Thank you.
-- Jimmy’s family, 2024-10-09

### **--- "Serious issues with MacOS"
Worked great for about a week, then began creating error messages on both iMacs and my Android Phone.  All operating systems are up to date.  When it worked, it was great, but now it fills my screen up with Sync Error messages.  Wrote twice to customer support for this app and received no reply.
-- ztim, 2024-10-08

[View all One Calendar reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)

## One Calendar In-App Purchases
| Item | Price |
|------|-------|
| OneCalendar premium | $5.99 |

## One Calendar Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | Austria | Productivity | #441 |
| Top Free | Hong Kong SAR China | Productivity | #477 |
| Top Free | Netherlands | Productivity | #486 |

## One Calendar Discovered Keywords
- one calendar
- printable calendar
- icloud calendar
- exchange calendar
- calendar outlook
- calender for iphone
- office 365 calendar
- microsoft calendar
- free calendar planner
- tiny calendar

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- [위젯칼 - 1등 캘린더 위젯(일정관리/미리알림/달력)](https://apptail.io/app/1-OSX/united-states)

## One Calendar Available In
- [United States](https://apptail.io/app/one-calendar-YJI/united-states)
- [Germany](https://apptail.io/app/one-calendar-YJI/germany)
- [United Kingdom](https://apptail.io/app/one-calendar-YJI/united-kingdom)
- [Canada](https://apptail.io/app/one-calendar-YJI/canada)
- [Netherlands](https://apptail.io/app/one-calendar-YJI/netherlands)
- [Italy](https://apptail.io/app/one-calendar-YJI/italy)
- [France](https://apptail.io/app/one-calendar-YJI/france)
- [Japan](https://apptail.io/app/one-calendar-YJI/japan)
- [Australia](https://apptail.io/app/one-calendar-YJI/australia)
- [Spain](https://apptail.io/app/one-calendar-YJI/spain)
- [Switzerland](https://apptail.io/app/one-calendar-YJI/switzerland)
- [Brazil](https://apptail.io/app/one-calendar-YJI/brazil)
- [Austria](https://apptail.io/app/one-calendar-YJI/austria)
- [Belgium](https://apptail.io/app/one-calendar-YJI/belgium)
- [China](https://apptail.io/app/one-calendar-YJI/china)
- [Poland](https://apptail.io/app/one-calendar-YJI/poland)
- [Mexico](https://apptail.io/app/one-calendar-YJI/mexico)
- [Türkiye](https://apptail.io/app/one-calendar-YJI/turkey)
- [Czechia](https://apptail.io/app/one-calendar-YJI/czechia)
- [South Korea](https://apptail.io/app/one-calendar-YJI/south-korea)
- [Sweden](https://apptail.io/app/one-calendar-YJI/sweden)
- [Philippines](https://apptail.io/app/one-calendar-YJI/philippines)
- [Thailand](https://apptail.io/app/one-calendar-YJI/thailand)
- [Denmark](https://apptail.io/app/one-calendar-YJI/denmark)
- [Portugal](https://apptail.io/app/one-calendar-YJI/portugal)
- [Israel](https://apptail.io/app/one-calendar-YJI/israel)
- [Greece](https://apptail.io/app/one-calendar-YJI/greece)
- [Singapore](https://apptail.io/app/one-calendar-YJI/singapore)
- [Romania](https://apptail.io/app/one-calendar-YJI/romania)
- [South Africa](https://apptail.io/app/one-calendar-YJI/south-africa)
- [Argentina](https://apptail.io/app/one-calendar-YJI/argentina)
- [Malaysia](https://apptail.io/app/one-calendar-YJI/malaysia)
- [India](https://apptail.io/app/one-calendar-YJI/india)
- [Chile](https://apptail.io/app/one-calendar-YJI/chile)
- [Hungary](https://apptail.io/app/one-calendar-YJI/hungary)
- [New Zealand](https://apptail.io/app/one-calendar-YJI/new-zealand)
- [Ireland](https://apptail.io/app/one-calendar-YJI/ireland)
- [Hong Kong SAR China](https://apptail.io/app/one-calendar-YJI/hong-kong)
- [Slovakia](https://apptail.io/app/one-calendar-YJI/slovakia)
- [Norway](https://apptail.io/app/one-calendar-YJI/norway)
- [Colombia](https://apptail.io/app/one-calendar-YJI/colombia)
- [Russia](https://apptail.io/app/one-calendar-YJI/russia)
- [Taiwan](https://apptail.io/app/one-calendar-YJI/taiwan)
- [Vietnam](https://apptail.io/app/one-calendar-YJI/vietnam)
- [Estonia](https://apptail.io/app/one-calendar-YJI/estonia)
- [Finland](https://apptail.io/app/one-calendar-YJI/finland)
- [Croatia](https://apptail.io/app/one-calendar-YJI/croatia)
- [Bulgaria](https://apptail.io/app/one-calendar-YJI/bulgaria)
- [Slovenia](https://apptail.io/app/one-calendar-YJI/slovenia)
- [United Arab Emirates](https://apptail.io/app/one-calendar-YJI/united-arab-emirates)
- [Peru](https://apptail.io/app/one-calendar-YJI/peru)
- [Indonesia](https://apptail.io/app/one-calendar-YJI/indonesia)
- [Saudi Arabia](https://apptail.io/app/one-calendar-YJI/saudi-arabia)
- [Ecuador](https://apptail.io/app/one-calendar-YJI/ecuador)
- [Luxembourg](https://apptail.io/app/one-calendar-YJI/luxembourg)
- [Malta](https://apptail.io/app/one-calendar-YJI/malta)
- [Iceland](https://apptail.io/app/one-calendar-YJI/iceland)
- [Lithuania](https://apptail.io/app/one-calendar-YJI/lithuania)
- [Egypt](https://apptail.io/app/one-calendar-YJI/egypt)
- [Ukraine](https://apptail.io/app/one-calendar-YJI/ukraine)
- [Dominican Republic](https://apptail.io/app/one-calendar-YJI/dominican-republic)
- [Sri Lanka](https://apptail.io/app/one-calendar-YJI/sri-lanka)
- [Cyprus](https://apptail.io/app/one-calendar-YJI/cyprus)
- [Nigeria](https://apptail.io/app/one-calendar-YJI/nigeria)
- [Azerbaijan](https://apptail.io/app/one-calendar-YJI/azerbaijan)
- [Uruguay](https://apptail.io/app/one-calendar-YJI/uruguay)
- [Kenya](https://apptail.io/app/one-calendar-YJI/kenya)
- [Panama](https://apptail.io/app/one-calendar-YJI/panama)
- [Oman](https://apptail.io/app/one-calendar-YJI/oman)
- [Jordan](https://apptail.io/app/one-calendar-YJI/jordan)
- [Latvia](https://apptail.io/app/one-calendar-YJI/latvia)
- [Macao SAR China](https://apptail.io/app/one-calendar-YJI/macau)
- [Kuwait](https://apptail.io/app/one-calendar-YJI/kuwait)
- [Tunisia](https://apptail.io/app/one-calendar-YJI/tunisia)
- [Mauritius](https://apptail.io/app/one-calendar-YJI/mauritius)
- [Jamaica](https://apptail.io/app/one-calendar-YJI/jamaica)
- [Uzbekistan](https://apptail.io/app/one-calendar-YJI/uzbekistan)
- [North Macedonia](https://apptail.io/app/one-calendar-YJI/north-macedonia)
- [Belarus](https://apptail.io/app/one-calendar-YJI/belarus)
- [Ghana](https://apptail.io/app/one-calendar-YJI/ghana)
- [Armenia](https://apptail.io/app/one-calendar-YJI/armenia)
- [Paraguay](https://apptail.io/app/one-calendar-YJI/paraguay)
- [Uganda](https://apptail.io/app/one-calendar-YJI/uganda)
- [Lebanon](https://apptail.io/app/one-calendar-YJI/lebanon)
- [Honduras](https://apptail.io/app/one-calendar-YJI/honduras)
- [Qatar](https://apptail.io/app/one-calendar-YJI/qatar)
- [Pakistan](https://apptail.io/app/one-calendar-YJI/pakistan)
- [Kazakhstan](https://apptail.io/app/one-calendar-YJI/kazakhstan)
- [Algeria](https://apptail.io/app/one-calendar-YJI/algeria)
- [Suriname](https://apptail.io/app/one-calendar-YJI/suriname)
- [Angola](https://apptail.io/app/one-calendar-YJI/angola)
- [Cayman Islands](https://apptail.io/app/one-calendar-YJI/cayman-islands)
- [Grenada](https://apptail.io/app/one-calendar-YJI/grenada)
- [Namibia](https://apptail.io/app/one-calendar-YJI/namibia)
- [Senegal](https://apptail.io/app/one-calendar-YJI/senegal)
- [Brunei](https://apptail.io/app/one-calendar-YJI/brunei)
- [Barbados](https://apptail.io/app/one-calendar-YJI/barbados)
- [Madagascar](https://apptail.io/app/one-calendar-YJI/madagascar)
- [Nepal](https://apptail.io/app/one-calendar-YJI/nepal)
- [Belize](https://apptail.io/app/one-calendar-YJI/belize)
- [Bahrain](https://apptail.io/app/one-calendar-YJI/bahrain)

---

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