Diary Calendar vs Night Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- ICS standard compatibility
- Date and monthly overviews
- Time zone management
- Recurring event creation
- Searchable appointment list
- External data storage
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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.
Night Calendar
This app allows you to customize your daily schedule by changing the start time of your day. Events occurring before your set start time will be displayed as part of the previous day's schedule, offering a flexible way to view your commitments.
- Adjustable daily start time
- Events displayed for previous/next day
- Flexible schedule viewing
- Customizable time zones
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A major feature of this app is the ability to change the start time of each day. If you set the start time of each day to 8 AM, events that start between midnight and 7:59 AM will be displayed as your schedule for the previous day. Also, if you set the start time of each day to 10 PM, events that start between 10 PM and 11:59 PM will be displayed as your schedule for the next day.
Screenshots
Verdict
The clearest difference is price: Night Calendar at Free against Diary Calendar's $2.99. Diary Calendar's advantage is ads (none vs shown) and update cadence (every 3 months vs every 8 months). On in-app purchases and device support 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
Night 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.
Diary Calendar ships an update every 3 months, Night Calendar every 8 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Diary Calendar | Night Calendar |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months — better | Every 8 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 14 MB | 19 MB |
| Age rating | 4+ | 12+ |
| Developer | Hans Joachim Gerhardt | Motoki Takahashi |
Customer experience
Diary Calendar
Night Calendar
In-app purchases
Diary Calendar
No in-app purchases
Night Calendar
No in-app purchases
Questions
Is Diary Calendar free?
Is Night Calendar free?
Do Diary Calendar or Night Calendar have ads?
Which is updated more often, Diary Calendar or Night Calendar?
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