# Calctan vs NotePure

The clearest difference is review sentiment: NotePure at 100% against Calctan's 29%. NotePure also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). Calctan's advantage is price (Free vs $0.99) and ratings volume (61 vs 1). On device support and iOS requirement there is nothing between them.

Calctan is free to download; NotePure costs $0.99 up front. Calctan sells 1 one-off in-app purchase. NotePure asks for nothing beyond the download.

NotePure holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Calctan has 61 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 29% of Calctan's written reviews are positive against 100% of NotePure's.

Calctan ships an update every 3 months, NotePure every 2 weeks. The most recent releases landed on September 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Calctan | NotePure |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.5 (61 ratings)](https://appshunter.io/ios/app/calctan/id1445480535/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/notepure/id6478435402/reviews)** |
| Number of ratings | **61** | 1 |
| Positive reviews | 28.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 11 MB | 3 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [Fang Yu](https://appshunter.io/developer/1454332107) |

## What reviewers say

### Calctan

[App page](https://appshunter.io/ios/app/calctan/id1445480535)

This sophisticated calculator app offers a minimalist design with advanced mathematical functions and extensive personalization options. It seamlessly syncs across devices and includes multitasking features for enhanced productivity.

**Highlights:** Intuitive minimalist design, 100+ customizable themes, 47 advanced mathematical functions, Automatic calculation history, iCloud sync across devices, Split Screen and Swipe Mode multitasking, Share calculations easily

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $9.99 | one-time |


### NotePure

[App page](https://appshunter.io/ios/app/notepure/id6478435402)

Capture inspirations and tasks with a minimalist digital notepad. This app offers a clean interface for efficient note-taking and management, with secure data storage and a comfortable dark mode option.

**Highlights:** Minimalist note-taking interface, Efficient task recording, Secure data storage, Dark mode support, Intuitive design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calctan free?

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

### Is NotePure free?

NotePure costs $0.99, with no in-app purchases.

### Which has better reviews, Calctan or NotePure?

NotePure is rated higher. Calctan averages 4.5 out of 5 from 61 ratings, while NotePure averages 5.0 from 1 ratings.

### Do Calctan or NotePure have ads?

Calctan shows ads; NotePure does not.

### Which is updated more often, Calctan or NotePure?

Calctan ships an update every 3 months, and NotePure every 2 weeks. Most recently, Calctan was updated on September 25, 2026 and NotePure on October 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.*