# Calctan vs ChaReader

The clearest difference is review sentiment: ChaReader at 83% against Calctan's 29%. ChaReader also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). Calctan's advantage is ratings volume (61 vs 6). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Calctan sells 1 one-off in-app purchase. ChaReader asks for nothing beyond the download.

ChaReader 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 6, 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 83% of ChaReader's.

Calctan ships an update every 3 months, ChaReader every 2 months. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Calctan | ChaReader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (61 ratings)](https://appshunter.io/ios/app/calctan/id1445480535/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/chareader/id1531941930/reviews)** |
| Number of ratings | **61** | 6 |
| Positive reviews | 28.6% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| 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) | [Kuixi Song](https://appshunter.io/developer/1052013882) |

## 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 |


### ChaReader

[App page](https://appshunter.io/ios/app/chareader/id1531941930)

Convert text from various sources into spoken word. Save articles as audio or PDF, and extract key information. Personalize your reading experience with adjustable voice settings and display options.

**Highlights:** Import articles from web, documents, images (OCR), Read articles aloud with adjustable voice settings, Export audio to MP3, Export articles to PDF, Extract key information (email, links, phone), Save favorite sentences to Collections

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calctan free?

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

### Is ChaReader free?

ChaReader is free to download, with no in-app purchases.

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

ChaReader is rated higher. Calctan averages 4.5 out of 5 from 61 ratings, while ChaReader averages 5.0 from 6 ratings.

### Do Calctan or ChaReader have ads?

Calctan shows ads; ChaReader does not.

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

Calctan ships an update every 3 months, and ChaReader every 2 months. Most recently, Calctan was updated on October 11, 2026 and ChaReader on October 15, 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.*