# Roman Numeral vs IoTFlow

The clearest difference is price: IoTFlow at Free against Roman Numeral's $0.99. IoTFlow also leads on ads (none vs shown) and update cadence (every 9 days vs every 69 months). Roman Numeral's advantage is device support (3 vs 1) and iOS requirement (14.1 vs 17.0). On in-app purchases there is nothing between them.

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

Roman Numeral ships an update every 69 months, IoTFlow every 9 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Roman Numeral | IoTFlow |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/roman-numeral/id637332796/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 69 months | **Every 9 days** |
| Monetization | Ad-supported | — |
| Size | 16 MB | 1 MB |
| Requires iOS | **14.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [H Valeur](https://appshunter.io/developer/621824042) | [Alfred Ang](https://appshunter.io/developer/1880940227) |

## What reviewers say

### Roman Numeral

[App page](https://appshunter.io/ios/app/roman-numeral/id637332796)

Easily convert between standard numbers and Roman numerals. Input a numeric value to see its Roman numeral equivalent, or input a Roman numeral to get its numeric form.

**Highlights:** Numeric to Roman numeral conversion, Roman numeral to numeric conversion, Simple and intuitive interface, Supports all standard Roman numerals

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

**In-app purchases:** none


### IoTFlow

[App page](https://appshunter.io/ios/app/iotflow/id6781005693)

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

**In-app purchases:** none


## Frequently asked questions

### Is Roman Numeral free?

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

### Is IoTFlow free?

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

### Do Roman Numeral or IoTFlow have ads?

Roman Numeral shows ads; IoTFlow does not.

### Which is updated more often, Roman Numeral or IoTFlow?

Roman Numeral ships an update every 69 months, and IoTFlow every 9 days. Most recently, Roman Numeral was updated on October 29, 2026 and IoTFlow on October 25, 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.*