# Calx vs Calccis

The clearest difference is price: Calccis at Free against Calx's $0.99. Calccis also leads on update cadence (every 3 weeks vs every 24 months). Calx's advantage is iOS requirement (12.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Calccis is free to download; Calx costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calx ships an update every 24 months, Calccis every 3 weeks. The most recent releases landed on October 4, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Calx | Calccis |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calx-stack-calculator/id928929230/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 4 MB | 1 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Clelland](https://appshunter.io/developer/912177584) | [Jukka Aittola](https://appshunter.io/developer/1676073314) |

## What reviewers say

### Calx

[App page](https://appshunter.io/ios/app/calx-stack-calculator/id928929230)

This calculator app utilizes Reverse Polish Notation (RPN) for efficient calculations by manipulating numbers on a stack. It offers a guided tutorial, gestural interaction, multiple keypads with various functions, and customization options for fonts and colors.

**Highlights:** Reverse Polish Notation (RPN), Gestural interaction, Multiple keypads (basic, scientific, statistical), Customizable fonts and colors, Guided tutorial

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

**In-app purchases:** none


### Calccis

[App page](https://appshunter.io/ios/app/calccis/id6446233205)

**In-app purchases:** none


## Frequently asked questions

### Is Calx free?

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

### Is Calccis free?

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

### Do Calx or Calccis have ads?

Neither Calx nor Calccis shows ads.

### Which is updated more often, Calx or Calccis?

Calx ships an update every 24 months, and Calccis every 3 weeks. Most recently, Calx was updated on October 4, 2026 and Calccis on September 12, 2026.

---

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