EU vs Mercury
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EU
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.
- EU-OPS support
- Flight time limitation information
- Pilot resource
- Free availability (until Feb 2016)
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This App is approaching a full stop landing February 2016 with the launch of the new EASA FTLs. Until then it is available for free. My new app 'EASA vs Airline FTL' has hit the app store. It has been rewritten from scratch, it's universal (now for iPad too!) with many major improvements. It also supports EU-OPS, so it is of use for you from now on. Please read about details there. Please click on the developer's name (Alexander Flohr) or search for 'EASA vs Airline' Thank you for using my EU-OPS apps until now, they will continue to be supported until April/2016.
Mercury
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.
- Celsius, Fahrenheit, Kelvin conversion
- Interactive temperature scrolling
- Dynamic background color
- Reset to zero function
- Decimal temperature support
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Mercury is the best temperature converter for Celsius, Fahrenheit and Kelvin. Elegant and easy to use. • Convert Celsius, Fahrenheit and Kelvin. • Scroll with your finger to change the current temperature. • Watch as the background color changes while you go hotter or colder. • Reset to zero with a quick tap. • Support for decimal temperature conversion.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | EU | Mercury |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (6 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Monthly — better | Every 70 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 7.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 37 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Flohr | Samuel Herrera |
Customer experience
EU
Mercury
In-app purchases
EU
No in-app purchases
Mercury
- Small Tip$0.99
- Remove Ads$1.99
- Medium Tip$2.99
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- Large Tip$4.99
- Massive Tip$9.99
