# Calculator vs Octodecuple Calc

The clearest difference is in-app purchases: Octodecuple Calc at none against Calculator's 1. Octodecuple Calc also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.8.3 vs 18.0). Calculator's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Calculator sells 1 one-off in-app purchase. Octodecuple Calc asks for nothing beyond the download.

Calculator ships an update every 2 months, Octodecuple Calc every 2 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Calculator | Octodecuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calculator-brill-calc/id6478857571/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 36 MB |
| Requires iOS | 18.0 | **15.8.3** |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Maxim Frolov](https://appshunter.io/developer/1008508211) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-brill-calc/id6478857571)

This calculator app features a unique hexagonal interface with color-coded buttons for easy operation. It offers a comprehensive set of mathematical functions, including basic operations, trigonometry, logarithms, and memory functions, optimized for touch control.

**Highlights:** Unique hexagonal button layout, Full scientific and basic math functions, Trigonometric and logarithmic operations, Memory functions (m+, m-, AC), Radian/degree toggle, Color-coded buttons

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific Version | $4.99 | one-time |


### Octodecuple Calc

[App page](https://appshunter.io/ios/app/octodecuple-calc/id6742386286)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator free?

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

### Is Octodecuple Calc free?

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

### Do Calculator or Octodecuple Calc have ads?

Octodecuple Calc shows ads; Calculator does not.

### Which is updated more often, Calculator or Octodecuple Calc?

Calculator ships an update every 2 months, and Octodecuple Calc every 2 weeks. Most recently, Calculator was updated on October 24, 2026 and Octodecuple Calc on October 10, 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.*