# Calx vs Notebook Calculator

The clearest difference is chart position: Notebook Calculator at #191 against Calx's unranked. Calx's advantage is price ($0.99 vs $1.99) and iOS requirement (12.0 vs 15.6). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

Calx costs $0.99 and Notebook Calculator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calx ships an update every 24 months, Notebook Calculator every 40 months. The most recent releases landed on August 12, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Calx | Notebook Calculator |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| 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 | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 24 months** | Every 40 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#191** |
| Size | 4 MB | 4 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Daniel Clelland](https://appshunter.io/developer/912177584) | [俊 姜](https://appshunter.io/developer/974809005) |

## 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


### Notebook Calculator

[App page](https://appshunter.io/ios/app/notebook-calculator/id1169182532)

**Currently charting:** #191 Top Paid · Utilities (US App Store)

This app functions as a powerful calculator with a notebook interface, allowing users to write, edit, save, and graph complex calculations. It supports a wide range of mathematical and statistical functions, including scientific and complex number calculations, with features like copy, cut, and paste for easy editing.

**Highlights:** Notebook interface for calculations, Edit, save, and graph history, Scientific and graphic calculator functions, Complex number calculations, Extensive mathematical functions, Statistical functions, File management for calculations

**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 Notebook Calculator free?

Notebook Calculator costs $1.99, with no in-app purchases.

### Do Calx or Notebook Calculator have ads?

Neither Calx nor Notebook Calculator shows ads.

### Which is updated more often, Calx or Notebook Calculator?

Calx ships an update every 24 months, and Notebook Calculator every 40 months. Most recently, Calx was updated on August 12, 2026 and Notebook Calculator on September 4, 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.*