# EU vs Mercury

The clearest difference is in-app purchases: EU at none against Mercury's 5. EU also leads on update cadence (monthly vs every 70 months) and iOS requirement (7.0 vs 26.0). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Mercury sells 5 one-off in-app purchases. EU asks for nothing beyond the download.

EU ships an update monthly, Mercury every 70 months. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | EU | Mercury |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (6 ratings)](https://appshunter.io/ios/app/mercury-temperature-converter/id1494415587/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 70 months |
| Monetization | Free | Free |
| Size | 37 MB | 4 MB |
| Requires iOS | **7.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Flohr](https://appshunter.io/developer/325312592) | [Samuel Herrera](https://appshunter.io/developer/962670797) |

## What reviewers say

### EU

[App page](https://appshunter.io/ios/app/eu-ops/id326630512)

This app provides information on European Union flight time limitations (FTLs) for pilots. It was available for free until February 2016, with continued support until April 2016.

**Highlights:** EU-OPS support, Flight time limitation information, Pilot resource, Free availability (until Feb 2016)

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

**In-app purchases:** none


### Mercury

[App page](https://appshunter.io/ios/app/mercury-temperature-converter/id1494415587)

Easily convert temperatures between Celsius, Fahrenheit, and Kelvin with an elegant and intuitive interface. Features dynamic background color changes based on temperature and supports decimal conversions.

**Highlights:** Celsius, Fahrenheit, Kelvin conversion, Interactive temperature scrolling, Dynamic background color, Reset to zero function, Decimal temperature support

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |
| Massive Tip | $9.99 | one-time |


## Frequently asked questions

### Is EU free?

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

### Is Mercury free?

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

### Do EU or Mercury have ads?

Neither EU nor Mercury shows ads.

### Which is updated more often, EU or Mercury?

EU ships an update monthly, and Mercury every 70 months. Most recently, EU was updated on October 11, 2026 and Mercury on October 24, 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.*