Calculus doodlus
Stéphan Barbé Utilities iPhoneiPadiPod touch
Calculus doodlus is a free Utilities app for iPhone and iPad by Stéphan Barbé. Rated 4.8/5 from 583 ratings. Requires iOS 17.0. Updated October 10, 2026.
- Rating
- 4.8
- 583 ratings
- Price
- Free
- on the App Store
- Size
- 13 MB
- Age 4+
- Updated
- Oct 10
- 2026 · v3.0.1
Screenshots
About Calculus doodlus
Calculus doodlus keeps your calculations visible, line by line. Read them back, continue where you left off, or go back and change any number. • Edit, copy & link Touch and hold any number to edit it. Tap a line to reuse its value, or double-tap to link it to another calculation and keep the values in sync. • Percentages & VAT Calculate percentages or deduct VAT with ease. The calculation remains visible, so you can see exactly how the result was obtained. • Keep your calculations Your pages are saved automatically. Keep recent calculations, pin important ones, rename and share them, and switch between pages with a swipe. • Big numbers, exact results Every operation is performed digit by digit, the same way you learned in school. That's how Calculus doodlus handles very large numbers while keeping exact results on the page. • Make it your own Customize the keyboard color and replace its digits with your own handwriting. Add Calculus doodlus to your Lock Screen or Control Center for one-tap access. 4.8 stars from more than 10,000 ratings Every 2 seconds, someone somewhere in the world starts a new calculation page. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & reviews
4.8
583 ratings
What’s new
Version 3.0.1 · Updated October 10, 2026
New in 3.0.1: Thanks to your feedback, Copy to Clipboard is back! • Copy a result: Touch and hold any result for about half a second. • Copy the whole page: Touch and hold a blank area on the page for about a second. • Includes minor bug fixes and improvements. --- Calculus doodlus 3.0 is here! This is a major update, with a completely redesigned way to manage your calculations. • Edit your calculations Made a typo? Need to change a number? Just touch and hold any number on the page. A small keypad appears, letting you edit the value directly — without having to start the calculation again. • Link calculations Double-tap a line to create a permanent link between calculations. When the original value changes, the linked value changes automatically too. It's a simple way to keep related calculations in sync. • Pages Open, pin, rename, share or delete your pages. • Lock Screen & Control Center Calculus doodlus is now just one tap away. Add it to your Lock Screen or Control Center for instant access. And of course, all the things that make Calculus doodlus what it is are still here: copy and reuse values, percentages and VAT, exact calculations with very large numbers, square roots, customizable colors and your own handwriting. Welcome to Calculus doodlus 3.0.
App privacy
The developer, Stéphan Barbé, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
- Usage Data: Advertising Data
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Advertising Data
Used for: Third-Party Advertising
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Calculus doodlus | 4.8 / 5 (583 ratings) | Free | October 10, 2026 | |
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| Calculator & AI Math Solver | 4.8 / 5 (56) | Free | Oct 13, 2026 | Compare |
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