# Mila's Unit Converter PRO vs FG91 Fastream

The clearest difference is price: FG91 Fastream at Free against Mila's Unit Converter PRO's $9.99. FG91 Fastream also leads on iOS requirement (11.0 vs 17.6). Mila's Unit Converter PRO's advantage is update cadence (every 4 days vs every 19 months). On ads, in-app purchases and device support there is nothing between them.

FG91 Fastream is free to download; Mila's Unit Converter PRO costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mila's Unit Converter PRO ships an update every 4 days, FG91 Fastream every 19 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Mila's Unit Converter PRO | FG91 Fastream |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.8 (1K ratings)](https://appshunter.io/ios/app/milas-unit-converter-pro/id407157906/reviews)** | — |
| Number of ratings | **1K** | — |
| Positive reviews | 89.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 19 months |
| Monetization | Paid | — |
| Size | 5 MB | 117 MB |
| Requires iOS | 17.6 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Scott DeSapio](https://appshunter.io/developer/403110618) | [Studio Reclame S.r.l.](https://appshunter.io/developer/1503486375) |

## What reviewers say

### Mila's Unit Converter PRO

[App page](https://appshunter.io/ios/app/milas-unit-converter-pro/id407157906)

Effortlessly convert between hundreds of units across 26 essential categories with this precision calculator. Designed for speed and simplicity, it offers accurate results in seconds for students, professionals, and travelers alike. Enjoy offline functionality and a customizable experience.

**Highlights:** Hundreds of units across 26 categories, Metric, imperial, and specialized units, Smart conversions for temperature, fuel, and more, Customizable categories, units, and number formats, Intuitive search and offline functionality, Conversions happen as you type

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

**In-app purchases:** none


### FG91 Fastream

[App page](https://appshunter.io/ios/app/fg91-fastream/id1539209643)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mila's Unit Converter PRO free?

Mila's Unit Converter PRO costs $9.99, with no in-app purchases.

### Is FG91 Fastream free?

FG91 Fastream is free to download, with no in-app purchases.

### Do Mila's Unit Converter PRO or FG91 Fastream have ads?

Neither Mila's Unit Converter PRO nor FG91 Fastream shows ads.

### Which is updated more often, Mila's Unit Converter PRO or FG91 Fastream?

Mila's Unit Converter PRO ships an update every 4 days, and FG91 Fastream every 19 months. Most recently, Mila's Unit Converter PRO was updated on November 6, 2026 and FG91 Fastream on November 3, 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.*