Calculator X: Math for iPad 4+

Calc Plus: Basic + Scientific

Otrofy Inc.

Designed for iPad

    • 4.6 • 5.7K Ratings
    • Free
    • Offers In-App Purchases


The #1 Free Calculator for iPad, iPhone and Apple Watch with 200k downloads.

Calculator is a free app with extended features that increases your productivity!
Download now and join the club of users impressed by the product!

• Basic & Easy to Use Calculator
• History of Calculations: Save, Copy & Share
• Edit Equation
• Memory Last Calculation
• Dark Mode
• Apple Watch Support
• Drag and Drop
• Split View

You can edit numbers anytime during calculation process.

Switch to Dark mode and enjoy the design! The dark mode protects eyes from bright colors, saves battery power and helps you focusing better.

Having a great result with your calculation? Save time and send to your contacts fast & simple by sharing with calculator.

We always appreciate your feedback. Please keep sharing your experience, bugs and ideas to

Enjoying Calculator and want more features? Please show us some love by giving a 5 star review, so we can keep updating with great new features!


What’s New

Version 1.38

- Fixed minor bugs and performance improvements.

It would be great to hear your feedback at

Ratings and Reviews

4.6 out of 5
5.7K Ratings

5.7K Ratings

KJB1.0 ,

Perfect replacement calc

Now that ipad doesn’t have a default calc, this is the perfect replacement. A calculator that is simple, quick, looks good (with a light and dark option), and.....No ADs!!!!!!!!!!! Almost forgot - and free. PERFECT!!!!!!! Everyone should get this one unless they need more scientific options or like ads.

I have probably only written about 3 reviews over 10 years. I just don’t take or have the time for it, but this had to be done. With soooo many options (apps) available but yet so hard to quickly and easily find what you really want and/or need, others need to know, this is one of those apps that you want to install and keep!!!!

Developer Response ,

Thanks for inspiration! We do our best to make it better.

vaprloc ,

Great calculator ALMOST but support???

I have enjoyed this calculator until today. Accidentally pressed “C”. Fortunately there is History! BUT… I cannot figure out how to easily use the history to restore a long calculation. I can retype each item again but don’t need history for that! I easily “copy entire equation” but cannot find a way to “paste” the equation. SO… went back to the App Store (because there’s no evident HELP in the app) and clicked support. It brought me to advertising, feedback and a Facebook connection. No HELP that I could see. As I no longer have Facebook due to security concerns I could not see if there was HELP there.
As I chose this app mainly because of its history capabilities I am sadly disappointed. I do hope someone out there can help me figure this out. When you’re tired from working on seemingly endless math calculations it’s easy to at least temporarily forget how to use an otherwise easy app. Regardless there should be a readily available and obvious help section to answer questions. That in my opinion would make this calculator perfect!
Please someone help !

Developer Response ,

Thank you for feedback! We will take your suggestions into account. There is a way to copy equation and paste outside (e.g. some notes etc.) Currently there is no functionality to paste in the app but you can always edit equation while calculating.

Moon dane ,

Finally! The right calculator!

I’ve been trying all the calculator apps out there. This one got it right! I wanted basic, with the numbers in the correct position and able to see history. Nailed it! The ads aren’t annoying but I’m going to look to see if there is a reasonably priced paid version. Something nice to add would be more color choices. App is still worth 5 stars just the way it is.

Developer Response ,

Thanks for feedback! We really happy that you like app, stay tuned with us to get more 💕

App Privacy

The developer, Otrofy Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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