PP Calendar Reminders vs CalendarDuo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PP Calendar Reminders
Manage reminders and view holidays with this utility app. Easily reschedule, mark as complete, or ignore reminders. Access public, lunar, and region-specific holidays with detailed date information and countdowns.
- Create Gregorian/Lunar reminders
- Quickly reschedule reminders
- Mark reminders as completed
- View public & lunar holidays
- Holiday countdown
- Sync reminders via iCloud
- Widget for quick info
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PP Calendar is a Calendar app focusing on reminders and holidays. Features: 1. Reminder: a) Create reminder based on Gregorian or Lunar date. b) Quickly reschedule reminder to next day, next month, next year, etc in context menu. c) Complete a reminder. - Mark reminder as completed. - View completion record. d) Ignore a reminder if it's not important. e) Support for alert in advance. f) Reminders can be set to repeat every lunar year & every lunar month. 2. Holiday: a) View public & lunar holidays in one place. b) View day of year, week of year. c) Holiday countdown. d) You can check out not only lunar dates, but also Stems-and-Branches, Chinese zodiac, the 24 Solar terms, and traditional Chinese holidays. 3. Context menu support. 4. Badge app icon. 5. Sync reminders across multiple iOS devices with iCloud. 6. Widget: Quickly check today information. 7. It's universal: - iPhone, iPad and iPod touch support - Rotation on iPad - Split View & Slide Over(On compatible iPad models only) Supported holidays: 1) General holidays 2) Region specific holidays.(United States, Japan, South Korea, China mainland, Hong Kong, Taiwan) 3) Chinese Lunar holidays 4) Solar terms Range: 1901/01/01 - 2100/12/31 (Gregorian) 1900/11/11 - 2100/12/01 (Chinese Lunar)
CalendarDuo
Easily manage and view holidays from two different countries simultaneously. This utility app offers instant switching between calendars, a dual-view display, and helpful tools like a world clock and currency exchange.
- Switch between two world calendars instantly
- Duo-view with holidays from two countries
- Daylight Saving Time dates
- Currency exchange rate
- World clock
- Add notes
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** This app does not access your Contact List or Calendar. ** CalendarDuo allows users to switch between two calendars at their fingertips! CalendarDuo is the best tool for: - Frequent flyer between two countries/regions - Organizing events with family members or relatives overseas - Scheduling meetings and tasks with colleagues overseas - Planning trips to another country/region - ANYONE who needs a simple calendar! Top features - Switching between TWO world calendars INSTANTLY - Duo-view displaying ONE calendar with holidays of TWO countries/regions - User interface with multiple language selection - Daylight Saving Time (DST) dates - Currency exchange rate (for currencies available in Europe Central Bank) - World clock - Adding notes CalendarDuo is the simplest calendar you’ll ever need! NEW! 2026 holidays are available now! - public holidays - bank holidays - statutory holidays - regional holidays - provincial holidays - special days NEW! 2022 World Calendars (more are coming!): - Australia - Canada - China (PRC) - France - Germany - Hong Kong - India (Maharashtra, New Delhi) - Indonesia - Italy - Japan - Macau - Malaysia - Philippines - Portugal - Singapore - South Korea - Taiwan - Thailand - United Kingdom - United States - Vatican City Holiday information is gathered from government official releases. Source details can be found on each Holiday List.
Screenshots
Verdict
The clearest difference is review sentiment: CalendarDuo at 50% against PP Calendar Reminders's 0%. CalendarDuo also leads on in-app purchases (none vs 1). PP Calendar Reminders's advantage is ads (none vs shown). On price, update cadence, 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
Both are free to download. PP Calendar Reminders sells 1 one-off in-app purchase. CalendarDuo asks for nothing beyond the download.
PP Calendar Reminders ships an update every 2 months, CalendarDuo every 4 months. The most recent releases landed on September 25, 2026 and June 24, 2026 respectively.
| Parameter | PP Calendar Reminders | CalendarDuo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (10 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 10 — better | — |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 3 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | 金鹏 王 | Chun Lam |
Customer experience
PP Calendar Reminders
CalendarDuo
In-app purchases
PP Calendar Reminders
- [More Features]$1.99
CalendarDuo
No in-app purchases
Questions
Is PP Calendar Reminders free?
Is CalendarDuo free?
Do PP Calendar Reminders or CalendarDuo have ads?
Which is updated more often, PP Calendar Reminders or CalendarDuo?
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