# Dozecal vs S2K NIG

The clearest difference is price: Dozecal at Free against S2K NIG's $0.99. Dozecal also leads on iOS requirement (12.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Dozecal is free to download; S2K NIG costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dozecal ships an update every 10 months, S2K NIG every 5 months. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Dozecal | S2K NIG |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/dozecal/id1521160089/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 27 MB | 4 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Johan Kovacs](https://appshunter.io/developer/1486605020) | [The Lagos Analysis Corporation](https://appshunter.io/developer/1530638836) |

## What reviewers say

### Dozecal

[App page](https://appshunter.io/ios/app/dozecal/id1521160089)

This educational calculator promotes the use of Base Twelve (duodecimal) in math and science. It offers standard mathematical functions in both duodecimal and decimal modes, with automatic conversion between them. It utilizes Reverse Polish Notation (RPN) for calculations.

**Highlights:** Duodecimal and Decimal modes, Automatic mode conversion, RPN (Reverse Polish Notation) input, Standard math functions, Trigonometric operations (degrees), Educational tool for Base Twelve

**Features:** macOS Compatibility

**In-app purchases:** none


### S2K NIG

[App page](https://appshunter.io/ios/app/s2k-nig/id1604070839)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dozecal free?

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

### Is S2K NIG free?

S2K NIG costs $0.99, with no in-app purchases.

### Do Dozecal or S2K NIG have ads?

Neither Dozecal nor S2K NIG shows ads.

### Which is updated more often, Dozecal or S2K NIG?

Dozecal ships an update every 10 months, and S2K NIG every 5 months. Most recently, Dozecal was updated on October 24, 2026 and S2K NIG on October 5, 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.*