# OFMS  Mobile vs Unit Converter & Calculators

The clearest difference is in-app purchases: OFMS  Mobile at none against Unit Converter & Calculators's 1. OFMS  Mobile also leads on ads (none vs shown). Unit Converter & Calculators's advantage is update cadence (every 5 days vs every 2 weeks) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Unit Converter & Calculators sells 1 one-off in-app purchase. OFMS  Mobile asks for nothing beyond the download.

OFMS  Mobile ships an update every 2 weeks, Unit Converter & Calculators every 5 days. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | OFMS  Mobile | Unit Converter & Calculators |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 32 MB | 34 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ODISHA SPACE APPLICATIONS CENTRE (ORSAC)](https://appshunter.io/developer/1524266215) | [Umit YILMAZ](https://appshunter.io/developer/1772563348) |

## What reviewers say

### OFMS  Mobile

[App page](https://appshunter.io/ios/app/ofms-mobile/id1562592891)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter & Calculators

[App page](https://appshunter.io/ios/app/unit-converter-and-calculators/id6736622331)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is OFMS  Mobile free?

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

### Is Unit Converter & Calculators free?

Unit Converter & Calculators is free to download, with in-app purchases available.

### Do OFMS  Mobile or Unit Converter & Calculators have ads?

Unit Converter & Calculators shows ads; OFMS  Mobile does not.

### Which is updated more often, OFMS  Mobile or Unit Converter & Calculators?

OFMS  Mobile ships an update every 2 weeks, and Unit Converter & Calculators every 5 days. Most recently, OFMS  Mobile was updated on October 4, 2026 and Unit Converter & Calculators on October 8, 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.*