# Roman Numerals Converter vs Atom Structure

The clearest difference is price: Atom Structure at $1.99 against Roman Numerals Converter's $3.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Roman Numerals Converter costs $3.99 and Atom Structure $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Roman Numerals Converter ships an update every 37 months, Atom Structure every 41 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Roman Numerals Converter | Atom Structure |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/roman-numerals-converter/id801997893/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 37 months** | Every 41 months |
| Monetization | Paid | — |
| Size | 12 MB | 232 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) |

## What reviewers say

### Roman Numerals Converter

[App page](https://appshunter.io/ios/app/roman-numerals-converter/id801997893)

Easily convert between Roman and Arabic numerals. Supports numbers up to 3,999,999 and validates Roman numeral input. Includes a conversion history and email sharing.

**Highlights:** Roman to Arabic conversion, Arabic to Roman conversion, Input validation, Conversion history, Email results, Supports numbers up to 3,999,999

**Features:** Vision Pro support

**In-app purchases:** none


### Atom Structure

[App page](https://appshunter.io/ios/app/atom-structure-edutech-era/id1637054844)

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

**In-app purchases:** none


## Frequently asked questions

### Is Roman Numerals Converter free?

Roman Numerals Converter costs $3.99, with no in-app purchases.

### Is Atom Structure free?

Atom Structure costs $1.99, with no in-app purchases.

### Do Roman Numerals Converter or Atom Structure have ads?

Neither Roman Numerals Converter nor Atom Structure shows ads.

### Which is updated more often, Roman Numerals Converter or Atom Structure?

Roman Numerals Converter ships an update every 37 months, and Atom Structure every 41 months. Most recently, Roman Numerals Converter was updated on November 1, 2026 and Atom Structure on November 7, 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.*