Comparison

Calndars vs Private Contacts

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

Private Contacts

Securely store and manage contacts separately from your main address book. Keep sensitive numbers hidden and protected with strong lock features. Initiate calls and chats on messaging apps without saving numbers to your phone.

Highlights
  • Private contact locker
  • Strong lock protection (PIN, pattern, password)
  • Import contacts from phonebook
  • Direct WhatsApp/Telegram chat without saving
  • Private caller and dialer
  • Prevent app access to contacts
Features
Read full description

Private Contacts lets you save and manage contacts away from your phone’s main address book, keeping them completely private, hidden, and secure in a protected contact locker. Store numbers privately so they do not appear in your default phonebook and cannot be accessed, synced, or scanned by other apps. This gives you full security and control over your personal or secret contacts. You can easily import contacts from your phonebook, lock them inside your private vault, and access them only through the app. Private Contacts also includes a built-in private caller and phone dialer, so you can call anyone without exposing their number to call logs or other apps. Start a WhatsApp chat directly without saving the number. You can also open chats in other messaging apps like Telegram, making communication fast and private. If you want to keep contacts secret, avoid syncing, or prevent apps from reading your data, Private Contacts gives you a secure and simple solution. Key Features Private Contact Locker: Save contacts outside your phonebook to keep them hidden and secure from other apps. Strong Lock Protection: Lock your private contacts with PIN, pattern, or password so only you can access them. Import Phonebook Contacts: Move selected contacts from your address book into your private vault with one tap. Open WhatsApp or Telegram Without Saving Numbers: Chat instantly without adding numbers to your phonebook. Private Caller & Phone Dialer: Call securely without exposing private contacts to your main call history. Better Privacy & Security: Prevent other apps from reading, syncing, or uploading your contacts. Keep your contact list clean, private, and secure — away from your phonebook and hidden from all other apps. Download Private Contacts today and take full control of your privacy. Privacy Policy: https://private-contacts.web.app/privacy-policy Terms & Conditions: https://private-contacts.web.app/terms-and-conditions

Screenshots

Calndars4 screens
Private Contacts4 screens

Verdict

The call

The clearest difference is price: Private Contacts at Free against Calndars's $3.99. Private Contacts also leads on update cadence (every 2 weeks vs every 5 weeks) and ratings volume (4 vs 1). On rating, 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

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Calndars against 5.0 for Private Contacts. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

UpkeepUpdate frequency

Calndars ships an update every 5 weeks, Private Contacts every 2 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Calndars versus Private Contacts: the parameters behind the verdict, then further details
ParameterCalndarsPrivate Contacts
Price$3.99Free — better
Rating5.0 (1 ratings)5.0 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS26.015.1 — better
Further details — not scored
Size6 MB37 MB
Age rating4+4+
DeveloperGeert JadoulLogiSian Technology Solutions

Customer experience

Calndars

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

Private Contacts

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Calndars

No in-app purchases

None

Private Contacts

No in-app purchases

Questions

Is Calndars free?
Calndars costs $3.99, with no in-app purchases.
Is Private Contacts free?
Private Contacts is free to download, with no in-app purchases.
Which has better reviews, Calndars or Private Contacts?
Calndars and Private Contacts are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.
Do Calndars or Private Contacts have ads?
Neither Calndars nor Private Contacts shows ads.
Which is updated more often, Calndars or Private Contacts?
Calndars ships an update every 5 weeks, and Private Contacts every 2 weeks. Most recently, Calndars was updated on October 6, 2026 and Private Contacts on October 24, 2026.

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