Comparison

Calndars vs COPROG Calendar

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

Head to head
About

Calndars

Effortlessly convert dates between over 30 major calendar systems, including Gregorian, Islamic, and Chinese. This utility is designed for global professionals and researchers needing precise cross-cultural date translations. Integrates with widgets and Shortcuts for seamless workflow.

Highlights
  • Convert dates across 30+ calendar systems
  • Supports Gregorian, Islamic, Chinese, Hebrew, Persian, and more
  • Native experience on iPhone, iPad, Mac, Apple Watch
  • Customizable widgets
  • Shortcuts integration
  • AppleScript support on macOS
Read full description

Convert dates across cultures with precision and speed. Calndars is a powerful yet minimal calendar converter designed for global professionals, researchers, and anyone working across time systems. Instantly translate dates between major calendar systems including Gregorian, Hebrew, Islamic, Chinese, Persian, and more. Whether you're coordinating international projects or exploring historical timelines, Calndars delivers accurate results in seconds. Built with modern Apple technologies, the app offers a fast, native experience across iPhone, iPad, Mac, and Apple Watch. Customize your workflow with widgets, favorites, and seamless Shortcuts integration. Designed for efficiency and clarity, Calndars supports over 30 languages and integrates smoothly into your daily tools—without collecting any personal data. A focused utility for a global world. FEATURES - Calndars is the best app to converts dates between the most used calendars in the world. - Select a calendar to set a date, and get the corresponding date in another calendar. - Copy the date to use it in another app. - Add a calendar to the favourites by tapping the star. - Add a calendar to the widgets by tapping the 4 squares icon. - Calendars can be reordered in the list. INTEGRATION - The app supports small, medium and large widgets. - Create a Shortcut in the Apple's Shortcuts App and use the Shortcut everywhere. - Use AppleScript on MacOS for integration between Calndars and other Apps. CALENDARS Calendars to convert between are: - Buddhist - Chinese - Coptic - Ethiopic (Amete Alem) - Ethiopic (Amete Mihret) - Gregorian - Hebrew - indian - Islamic Civil - Islamic Tabular - Islamic Umm Al Qura - Japanese - Persian - Taiwanese - Bangla - Gujarati - Kannada - Malayalam - Marathi - Odia - Tamil - Telugu - Vikram - Dangi - Vietnamese PLATFORM OR DEVICES - iPhone - iPad - Mac - AppleWatch.

About

COPROG Calendar

Features
Read full description

Maximize Your Company Success with Our Powerful Company Management App! Discover the easy way to efficiently schedule and manage your appointments. Our software allows you to reach new customers who prefer to book online. With our intuitive online booking system, your clients have the freedom to book their appointments independently—within the times you set, of course. You remain in control while the system automatically handles appointment scheduling for you. More control, less effort: Set your availability, and let the system take care of the rest. This way, you can focus on what truly matters: your clients. Stay perfectly organized: Manage your working hours, keep track of all client data, and effortlessly organize your daily tasks. Save notes for each appointment to ensure you’re always well-prepared, creating an unforgettable customer experience. Boost your efficiency and enhance your service—all with just one app! Download the app now and turn your salon management into a true success story!

Screenshots

Calndars4 screens
COPROG Calendar4 screens

Verdict

The call

The clearest difference is price: COPROG Calendar at Free against Calndars's $3.99. COPROG Calendar also leads on update cadence (fortnightly vs every 5 weeks) and iOS requirement (15.0 vs 26.0). On ads, 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

CostPrice · In-app purchases · Ads · Monetization

COPROG Calendar is free to download; Calndars costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calndars ships an update every 5 weeks, COPROG Calendar fortnightly. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 6 level
Calndars versus COPROG Calendar: the parameters behind the verdict, then further details
ParameterCalndarsCOPROG Calendar
Price$3.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS26.015.0 — better
Further details — not scored
Size6 MB63 MB
Age rating4+4+
DeveloperGeert JadoulCOPROG e.K.

In-app purchases

None

Calndars

No in-app purchases

None

COPROG Calendar

No in-app purchases

Questions

Is Calndars free?
Calndars costs $3.99, with no in-app purchases.
Is COPROG Calendar free?
COPROG Calendar is free to download, with no in-app purchases.
Do Calndars or COPROG Calendar have ads?
Neither Calndars nor COPROG Calendar shows ads.
Which is updated more often, Calndars or COPROG Calendar?
Calndars ships an update every 5 weeks, and COPROG Calendar fortnightly. Most recently, Calndars was updated on October 6, 2026 and COPROG Calendar on October 15, 2026.

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