# Calctan vs PROG_CALC

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

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

PROG_CALC 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 PROG_CALC's.

Calctan ships an update every 3 months, PROG_CALC every 2 weeks. The most recent releases landed on October 11, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Calctan | PROG_CALC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (61 ratings)](https://appshunter.io/ios/app/calctan/id1445480535/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prog-calc/id1640426491/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 | **Free** |
| Size | 11 MB | 78 MB |
| Requires iOS | 16.6 | **13** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [嘉欣 胡](https://appshunter.io/developer/1640395440) |

## 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 |


### PROG_CALC

[App page](https://appshunter.io/ios/app/prog-calc/id1640426491)

This app offers a programmable calculator with two distinct modes for daily computing and advanced mathematical functions. It supports system conversions between binary, octal, decimal, and hexadecimal, and allows for variable storage and code sharing.

**Highlights:** Basic and advanced calculation modes, Syntax parser, Variable storage and editing, Binary, octal, decimal, hexadecimal conversion, Built-in code examples, Code sharing via QR code or file

**In-app purchases:** none


## Frequently asked questions

### Is Calctan free?

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

### Is PROG_CALC free?

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

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

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

### Do Calctan or PROG_CALC have ads?

Calctan shows ads; PROG_CALC does not.

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

Calctan ships an update every 3 months, and PROG_CALC every 2 weeks. Most recently, Calctan was updated on October 11, 2026 and PROG_CALC on September 17, 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.*