# Roman Calculator vs Robot Counter

The clearest difference is price: Robot Counter at Free against Roman Calculator's $0.99. Robot Counter also leads on iOS requirement (12.0 vs 26.0). Roman Calculator's advantage is ads (none vs shown) and update cadence (every 5 months vs every 20 months). On in-app purchases and device support there is nothing between them.

Robot Counter is free to download; Roman Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Roman Calculator ships an update every 5 months, Robot Counter every 20 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Roman Calculator | Robot Counter |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/roman-calculator/id415183786/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 20 months |
| Monetization | Paid | — |
| Size | 41 MB | 13 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Millhouse](https://appshunter.io/developer/415183789) | [Kyohei Hakka](https://appshunter.io/developer/1279110012) |

## What reviewers say

### Roman Calculator

[App page](https://appshunter.io/ios/app/roman-calculator/id415183786)

This calculator handles standard arithmetic and introduces roman numeral calculations, including fractions. Customize the look with different backgrounds and button styles. It offers advanced functions like trigonometry and memory in landscape mode.

**Highlights:** Roman numeral calculations, Roman fraction support, Convert Roman to Arabic and vice versa, Customizable backgrounds and button styles, Advanced functions (sin, cos, tan, sqrt, memory), Landscape mode with expanded functions

**Features:** macOS Compatibility

**In-app purchases:** none


### Robot Counter

[App page](https://appshunter.io/ios/app/robot-counter/id1280382532)

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

**In-app purchases:** none


## Frequently asked questions

### Is Roman Calculator free?

Roman Calculator costs $0.99, with no in-app purchases.

### Is Robot Counter free?

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

### Do Roman Calculator or Robot Counter have ads?

Robot Counter shows ads; Roman Calculator does not.

### Which is updated more often, Roman Calculator or Robot Counter?

Roman Calculator ships an update every 5 months, and Robot Counter every 20 months. Most recently, Roman Calculator was updated on November 1, 2026 and Robot Counter on October 26, 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.*