# Calculus doodlus

> Friendly everyday calculator

Canonical page: [https://chrome-stats.com/d/id465916328](https://chrome-stats.com/d/id465916328)

## Overview

- **ID:** `id465916328`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Stéphan Barbé
- **Category:** Utilities
- **Rating:** 4.80 / 5 (566 ratings)
- **Version:** 2.1.2
- **Last updated:** 2026-04-21
- **First published:** 2011-09-23
- **Size:** 7.45 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/calculus-doodlus/id465916328)
- **Website:** [https://www.stephanbarbe.de](https://www.stephanbarbe.de/)
- **Privacy policy:** [http://www.stephanbarbe.de/calculusdoodlus/confidentiality.html](http://www.stephanbarbe.de/calculusdoodlus/confidentiality.html)

## Description

Calculus doodlus is a visual, multi-page calculator with clean pages and instant history. It keeps your daily math organized and presents results in a clear handwritten-style interface that feels like you wrote the calculations by hand. You can flip through past calculations to review results quickly.

It auto-saves your work, supports percent and VAT calculations, and offers tools to customize the page with your own handwriting. Note that operations are entered by typing, not drawn. It has been recognized as an iPhone App of the Week and featured in Germany, Switzerland, and Austria.

## Rankings

- #68,349 — Overall
- #6 — calculus
- #33 — feuilles de calcul

## Review summary

Users frequently praise the app for its simplicity, clean design, and useful tape/history feature that makes it easy to review and reuse previous numbers. It is widely regarded as a top calculator, praised for ease of use, quick access to past calculations, and reliable performance. Some repeat users on older devices report crashes or slow startup, and a few request additional features such as more operators, split-screen support, or an undo option. Overall, strong satisfaction with room for compatibility and feature improvements.

### Pros

- Easy to use and intuitive interface
- Produces a continuous tape of entries for easy error checking
- Shows previous numbers/steps for quick reuse
- Reliable and fast; rarely crashes
- Visually appealing design with a clear layout

### Cons

- Crashes and slow startup on older iPhone models (e.g., iPhone 4s/5) and general performance issues on older devices

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Source: [Chrome-Stats](https://chrome-stats.com/d/id465916328)