# Calx vs CALC 1 Programmable Calculator

The clearest difference is price: Calx at $0.99 against CALC 1 Programmable Calculator's $9.99. Calx also leads on rating (5.0 vs 4.6) and iOS requirement (12.0 vs 16.1). CALC 1 Programmable Calculator's advantage is update cadence (every 5 weeks vs every 24 months) and ratings volume (9 vs 2). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

Calx costs $0.99 and CALC 1 Programmable Calculator $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calx holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 9 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Calx ships an update every 24 months, CALC 1 Programmable Calculator every 5 weeks. The most recent releases landed on August 12, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Calx | CALC 1 Programmable Calculator |
| --- | --- | --- |
| Price | **$0.99** | $9.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calx-stack-calculator/id928929230/reviews)** | [4.6 (9 ratings)](https://appshunter.io/ios/app/calc-1-programmable-calculator/id1455298951/reviews) |
| Number of ratings | 2 | **9** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 4 MB | 8 MB |
| Requires iOS | **12.0** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Clelland](https://appshunter.io/developer/912177584) | [CalcFxC, LLC](https://appshunter.io/developer/395979596) |

## 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


### CALC 1 Programmable Calculator

[App page](https://appshunter.io/ios/app/calc-1-programmable-calculator/id1455298951)

Create custom calculators with AI-generated JavaScript functions for precise calculations and data visualization. Assign programs to keys and manage data efficiently. Offers multiple calculation modes and extensive documentation.

**Highlights:** AI-assisted JavaScript function creation, Customizable function calculators, Data visualization and plotting, Programmable calculator keys, List and data management, Multiple calculation modes (algebraic, RPN)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calx free?

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

### Is CALC 1 Programmable Calculator free?

CALC 1 Programmable Calculator costs $9.99, with no in-app purchases.

### Which has better reviews, Calx or CALC 1 Programmable Calculator?

Calx is rated higher. Calx averages 5.0 out of 5 from 2 ratings, while CALC 1 Programmable Calculator averages 4.6 from 9 ratings.

### Do Calx or CALC 1 Programmable Calculator have ads?

Neither Calx nor CALC 1 Programmable Calculator shows ads.

### Which is updated more often, Calx or CALC 1 Programmable Calculator?

Calx ships an update every 24 months, and CALC 1 Programmable Calculator every 5 weeks. Most recently, Calx was updated on August 12, 2026 and CALC 1 Programmable Calculator on September 9, 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.*