"A calculator app with a few extra nifty features that set it apart from the rest."

Calculus doodlus is multi-page, saves your work automatically, calculates % and VAT, sends as email, and more... Check out all features and functions in the documentation.

Calculus doodlus creates an interactiv page that looks like you did your calculation by hand, and you can customize it with your own handwriting!

Please note that Calculus doodlus works like a classic calculator, operations are to be typed in and not drawn.

Train your brain!
That's the new big feature of this version: a quiz to exercise your arithmetic skills, or to help your child practice calculating.

+++ iPhone App of the Week +++
Featured in Germany, Switzerland and Austria

Approved by my sons, used by my dad!

What’s New

Version 1.2.1

Support 64 bit.
Bug fixed when restoring In-App-Purchase.

New economic model:
The app is now available for free with all features.
It offers an In-App-Purchase to remove advertising.
Thanks for supporting Calculus doodlus!

Ratings and Reviews

4.0 out of 5
4 Ratings

4 Ratings

KburakA ,

Very handy

It is easy to use and look or get previous numbers for next steps. I totally suggest it

Opinion02122 ,

Great developer

When I've run into problems or have had questions or suggestions about this app, I have contacted the developer and he has responded almost immediately. That's a big plus in my book.

I purchased this app because I like being able to see the numbers I've put in, so I can see that I haven't made any input errors. It makes it very similar to what I would write on a paper if I were doing it by hand. I think that's a definite plus for this app, especially since no other calculator allows you that option, and, if you're like me, your fingers often hit buttons other than those you intended to hit! LOL

Having been a math teacher for 35 years, I think this would be an excellent calculator for kids. It reminds me of the old adding machine tapes, showing you step by step, the calculations you have input.

Clicking out of the app closes your calculation, but if you swipe the page, the old calculations, that have been held in memory, will reappear. I really like that feature, and thank the developer for pointing it out to me when I thought I had lost my work.

I've been using the app for about a year now, and it's still my favorite calculator app. It's unfortunate that it's not more easily found in the app store.

Laluxe ,

Love it!

This is a great app if you're looking for a simple calculator. It DOES let you draw your own numbers, however it saves what you draw and uses your writing when you type the number on the calculator later. You can't write the number on the screen as you're calculating. I don't mind that though. I think it's pretty cool to see my own handwriting on the screen even if it is a saved copy. You can always change it later. Great app! I would highly recommend!


Stephan Barbe
13.3 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Stéphan Barbé
In-App Purchases
  1. Remove Ads $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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