# FireMAPS vs Unit Converter....

The clearest difference is in-app purchases: FireMAPS at none against Unit Converter....'s 2. FireMAPS also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Unit Converter.... sells 2 in-app purchases, starting at $1.99 per month. FireMAPS asks for nothing beyond the download.

FireMAPS ships an update monthly, Unit Converter.... every 2 weeks. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | FireMAPS | Unit Converter.... |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 75 MB | 106 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MF Fire](https://appshunter.io/developer/1248847162) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## What reviewers say

### FireMAPS

[App page](https://appshunter.io/ios/app/firemaps/id1585208688)

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

**In-app purchases:** none


### Unit Converter....

[App page](https://appshunter.io/ios/app/unit-converter/id6751115020)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| units_by_oliva_subscription | $1.99 | per month |
| units_by_oliva_donation | $1.99 | one-time |


## Frequently asked questions

### Is FireMAPS free?

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

### Is Unit Converter.... free?

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

### Do FireMAPS or Unit Converter.... have ads?

Unit Converter.... shows ads; FireMAPS does not.

### Which is updated more often, FireMAPS or Unit Converter....?

FireMAPS ships an update monthly, and Unit Converter.... every 2 weeks. Most recently, FireMAPS was updated on September 14, 2026 and Unit Converter.... on September 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*