Simple Temperature Converter vs Mercury
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Temperature Converter
Easily convert temperatures between Celsius and Fahrenheit with a simple sliding interface. This app offers a quick and intuitive way to switch units without typing, with customizable temperature ranges. It's designed for users who frequently need to check temperatures in different scales.
- Sliding conversion interface
- Celsius to Fahrenheit conversion
- Fahrenheit to Celsius conversion
- Customizable temperature range
- Quick and simple to use
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Tired of viewing the weather and having to fumble with switching between F and C all the time? Simple and quick sliding to convert the temperature from C to F, no need to type anything, just slide and go. Default temperature range is between 50C (122F) and -50C (-58F). v1.2 Update You can now change the minimum and maximum values and the slider will update live. Values reset to 50C and -50C after closing the app.
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 review sentiment: Mercury at 100% against Simple Temperature Converter's 0%. Mercury also leads on price (Free vs $0.99). Simple Temperature Converter's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 5). On ratings volume, ads and device support 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
Mercury is free to download; Simple Temperature Converter costs $0.99 up front. Mercury sells 5 one-off in-app purchases. Simple Temperature Converter asks for nothing beyond the download.
Simple Temperature Converter holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 6 respectively. Written reviews complicate that: 0% of Simple Temperature Converter's written reviews are positive against 100% of Mercury's, so the app with the better star average is not the one people write more warmly about.
Simple Temperature Converter ships an update every 6 months, Mercury every 70 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Simple Temperature Converter | Mercury |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (4 ratings) — better | 4.0 (6 ratings) |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 6 — better |
| Update frequency | Every 6 months — better | Every 70 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 0 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Bruce Anthony | Samuel Herrera |
Customer experience
Simple Temperature Converter
Mercury
In-app purchases
Simple Temperature Converter
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
Questions
Is Simple Temperature Converter free?
Is Mercury free?
Which has better reviews, Simple Temperature Converter or Mercury?
Do Simple Temperature Converter or Mercury have ads?
Which is updated more often, Simple Temperature Converter or Mercury?
Other comparisons
