Comparison

Diary Calendar vs User Calendar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Diary Calendar

This calendar app supports the ICS standard for seamless integration with PC calendar software like Outlook and Lightning. It offers detailed date and monthly overviews, allows for time zone-specific appointments, and enables the creation of both one-off and recurring events.

Highlights
  • ICS standard compatibility
  • Date and monthly overviews
  • Time zone management
  • Recurring event creation
  • Searchable appointment list
  • External data storage
Features
Read full description

This app is suitable for calendars according to the ICS standard RFC 5545/5546,  which is used by most computer programs.  This is the prerequisite, so that you can also use your calendar from the PC  with Outlook, Lighting or other software. This calendar inherits the following functions: - Date Overview    All appointments are displayed time-dependent. The list can be searched. The list is kept on the iPhone and can be stored and loaded externally. Appointments can also be transferred from the iPhone - Monthly Overview    Monthly overview helps navigate through calendar dates quickly.  Appointments additional are listed separately.  An overview of appointments of the day couldt be called up on the screen. - Date    Appointments can include date and time or just the date.    These can be stored with or without time zone. So, for example    the date New Year should be used without time zone as the year    actually begins on earth at different times.    In contrast, a birthday with the time zone should be deposited, in    which the jubilarian lives. Thus, at the time of congratulation    nothing goes wrong. - Series date    One-off and serial appointments can be generated.    A recurring event is controlled by a rule by which the repetitive    appointments are generated. These rules fulfill the standard.    So you do not have to dive deeper into the rules, as most common rules could be created by key combination.

About

User Calendar

A versatile calendar app for managing work, vacations, and reminders. It offers Gregorian and Lunar calendar views, customizable alerts, and cloud storage for settings. Supports a wide range of countries and allows for custom holiday designations.

Highlights
  • Gregorian and Lunar calendar query
  • Customizable reminders with color-coding
  • System calendar integration
  • Cloud storage for settings
  • Customizable holidays and workdays
  • Country-specific calendar information
Features
Read full description

This is a powerful calendar program that allows you to customize the date of work and vacation, set various reminders, integrate system calendars, and store settings in the cloud space. 1.Gregorian and Lunar Query 2.Customize reminders for different colors of the Gregorian or Lunar calendar 3.Integrating system calendars, you can view system calendars directly 4.User-set calendars can exist in the cloud space of a personal account, and the change is not lost 5.Interval reminder 6.You can add special dates to the system calendar. The display will be distinguished by different colors, or you can hide other system calendars to distinguish between work and family trips 7.Reminder for weekdays (not counting holidays) 8.Users can customize vacation or non-holiday features 9.Astrology calendar 10.You can choose which country's calendar information to display, List of supported countries : If the country is not on the list, or the holiday is different because of different regions, you can also customize which day is a holiday or non-holiday 1.Taiwan 2.China 3.Hong Kong 4.Macau 5.Malaysia 6.Singapore 7.Japan 8.South Korea 9.Philippines 10.Vietnam 11.India 12.Canada 13.France 14.Germany 15.Austria 16.Switzerland 17.Czech Republic 18.Australia 19.Netherlands 20.Belgium 21.Luxembourg 22.Spain 23.Argentina 24.Paraguay 25.Mexico 26.Chile 27.Costa Rica 28.Portugal 29.Brazil 30.Italy 31.Ireland 32.United Kingdom 33.New Zealand 34.United States

Screenshots

Diary Calendar4 screens
User Calendar4 screens

Verdict

The call

The clearest difference is price: User Calendar at Free against Diary Calendar's $2.99. User Calendar also leads on update cadence (every 5 weeks vs every 3 months). Diary Calendar's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

User Calendar is free to download; Diary Calendar costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Diary Calendar ships an update every 3 months, User Calendar every 5 weeks. The most recent releases landed on September 10, 2026 and August 9, 2026 respectively.

Scorecard4 real differences · 6 level
Diary Calendar versus User Calendar: the parameters behind the verdict, then further details
ParameterDiary CalendarUser Calendar
Price$2.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews33.3% of reviews—
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.012.0
Further details — not scored
Size14 MB13 MB
Age rating4+4+
DeveloperHans Joachim GerhardtYihang Huang

Customer experience

Diary Calendar

Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

User Calendar

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Diary Calendar

No in-app purchases

None

User Calendar

No in-app purchases

Questions

Is Diary Calendar free?
Diary Calendar costs $2.99, with no in-app purchases.
Is User Calendar free?
User Calendar is free to download, with no in-app purchases.
Do Diary Calendar or User Calendar have ads?
User Calendar shows ads; Diary Calendar does not.
Which is updated more often, Diary Calendar or User Calendar?
Diary Calendar ships an update every 3 months, and User Calendar every 5 weeks. Most recently, Diary Calendar was updated on September 10, 2026 and User Calendar on August 9, 2026.

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