# Calculus doodlus vs Kalculator

The clearest difference is review sentiment: Calculus doodlus at 82% against Kalculator's 38%. Calculus doodlus also leads on rating (4.8 vs 4.2) and ratings volume (584 vs 19). Kalculator's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Calculus doodlus sells 1 in-app purchase, starting at $4.99 per year and Kalculator sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Calculus doodlus holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Calculus doodlus has 584 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 82% of Calculus doodlus's written reviews are positive against 38% of Kalculator's.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Calculus doodlus | Kalculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (584 ratings)](https://appshunter.io/ios/app/calculus-doodlus/id465916328/reviews)** | [4.2 (19 ratings)](https://appshunter.io/ios/app/kalculator/id470043471/reviews) |
| Number of ratings | **584** | 19 |
| Positive reviews | **81.9% of reviews** | 38.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 2 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Stéphan Barbé](https://appshunter.io/developer/313949257) | [Koombea, Inc.](https://appshunter.io/developer/337990786) |

## What reviewers say

### Calculus doodlus

[App page](https://appshunter.io/ios/app/calculus-doodlus/id465916328)

This app offers a multi-page calculator with automatic saving and advanced functions like percentage and VAT calculation. It uniquely presents calculations in an interactive, handwritten style that can be customized with your own script.

**Highlights:** Multi-page interface, Automatic work saving, Percentage calculation, VAT calculation, Customizable handwriting style, Interactive calculation pages

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient and fast
- 💡 Customizable handwritten numbers
- 📋 Keeps calculation history
- 🔢 Helpful percentage calculations

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔍 Difficult to delete past calculations
- 💤 Slow performance after updates
- 🔧 Lacks advanced features

**Reported bugs**

- Calculation results not displaying correctly
- App crashing on launch for some users
- Handwritten numbers not registering properly

**Requested features**

- Add ability to edit/delete individual calculations
- Implement a dark mode option
- Include more advanced math functions
- Allow copying/pasting of individual numbers
- Improve multitasking support


### Kalculator

[App page](https://appshunter.io/ios/app/kalculator/id470043471)

This app allows you to type mathematical expressions naturally, like you would write them, and see the results in real-time. It saves all your calculations, offers exact decimal answers, and provides numerous customization themes. Widgets keep your latest result accessible on your home screen.

**Highlights:** Type expressions naturally, See answers as you go, Exact decimal arithmetic, Saved and synced calculation history, Customizable themes and app icons, Home screen widgets, Accessibility features

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Old School Theme Pack | $0.99 | one-time |
| Dark Theme Pack | $0.99 | one-time |
| Pastel Theme Pack | $0.99 | one-time |
| Vibrant Theme Pack | $0.99 | one-time |
| Classic Theme Pack | $0.99 | one-time |
| Light Theme Pack | $0.99 | one-time |
| Seasons Theme Pack | $0.99 | one-time |


## Frequently asked questions

### Is Calculus doodlus free?

Calculus doodlus is free to download, with in-app purchases available.

### Is Kalculator free?

Kalculator is free to download, with in-app purchases available.

### Which has better reviews, Calculus doodlus or Kalculator?

Calculus doodlus is rated higher. Calculus doodlus averages 4.8 out of 5 from 584 ratings, while Kalculator averages 4.2 from 19 ratings.

### Do Calculus doodlus or Kalculator have ads?

Calculus doodlus shows ads; Kalculator does not.

### Which is updated more often, Calculus doodlus or Kalculator?

Calculus doodlus ships an update every 6 weeks, and Kalculator every 6 weeks. Most recently, Calculus doodlus was updated on November 1, 2026 and Kalculator on November 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*