Calculator HD+ Pro 4+

Simply the best calculator app

smalltech sarl

Designed for iPad

    • 4.7 • 81 Ratings
    • $3.99


There are many calculator apps out there, so why does everyone get this one ?

- It is simple, easy to use and well designed
- High precision engine
- Result is displayed while typing the formula
- Multiple undo
- Switch between workspaces !
- Persistent history
- Specialized keypad for iPhone and iPad
- Supports bluetooth keyboard
- Right or left-handed mode
- Print easily with AirPrint
- Share history by e-mail

The PRO version has the following advantages:
- more workspaces
- no advertising

What’s New

Version 1.65

Small fixes

Ratings and Reviews

4.7 out of 5
81 Ratings

81 Ratings

mary w e ,

Best Calculator App Ever

I love this app for calculating all of the “maths” used in writing knitting pattern instructions for my design work! I’m so far on the right side of my brain that I can honestly say I can’t do long division on a piece of paper any more (pretty pathetic) and I can really confuse myself doing multiplications to determine the perfect shaping of the garment I’m designing for different sizes.
Simple and clear to use,doesn’t suddenly interject past calculations into the current actions, which makes me totally doubt my sanity! Thanks App Creators!

Marc Egba ,

Incredibly Awesome

This Calculator App tops them all
It is the ultimate I have used since the advent of smart phones.
I downloaded the free version. On seeing the potentials, I immediately downloaded the paid version same day.
Worth every dime I paid.

J.R. Magic ,

Poor visuals

Ever since a random update they did last year, when you switch apps and then switch back to the calculator half of the background is a different color for no reason. I’ve sent them at least a dozen requests in the last year to fix it. They keep saying they will… and then nothing ever comes of it. EXTREMELY poor customer service.

App Privacy

The developer, smalltech sarl, 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
  • Diagnostics

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


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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