# Calctan vs ChatBlockus

The clearest difference is price: Calctan at Free against ChatBlockus's $1.99. Calctan also leads on rating (4.5 vs 1.0) and ratings volume (61 vs 1). ChatBlockus's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Calctan is free to download; ChatBlockus costs $1.99 up front. Calctan sells 1 one-off in-app purchase. ChatBlockus asks for nothing beyond the download.

Calctan holds the better App Store score, 4.5 against 1.0. 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.

Calctan ships an update every 3 months, ChatBlockus daily. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Calctan | ChatBlockus |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (61 ratings)](https://appshunter.io/ios/app/calctan/id1445480535/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/chatblockus/id6667110949/reviews) |
| Number of ratings | **61** | 1 |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Daily** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 11 MB | 1 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [Lucas Exequiel Di Tomase](https://appshunter.io/developer/1456307400) |

## 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 |


### ChatBlockus

[App page](https://appshunter.io/ios/app/chatblockus/id6667110949)

This Safari extension allows users to block comment sections on websites, providing a cleaner browsing experience. It is designed exclusively for Safari browsers on Apple devices.

**Highlights:** Blocks comment sections, Safari extension, Cleaner browsing experience, Works on iPhone and iPad

**Features:** Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is Calctan free?

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

### Is ChatBlockus free?

ChatBlockus costs $1.99, with no in-app purchases.

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

Calctan is rated higher. Calctan averages 4.5 out of 5 from 61 ratings, while ChatBlockus averages 1.0 from 1 ratings.

### Do Calctan or ChatBlockus have ads?

Calctan shows ads; ChatBlockus does not.

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

Calctan ships an update every 3 months, and ChatBlockus daily. Most recently, Calctan was updated on October 11, 2026 and ChatBlockus on October 12, 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.*