tempConvert vs Ultra Dark Mode Extension
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
tempConvert
Quickly convert temperatures between Fahrenheit and Celsius with instant results. This ad-free utility works offline, offering animated visuals and contextual labels for easy understanding. It supports negative temperatures and includes reference points for common scenarios.
- Instant temperature conversion
- Fahrenheit to Celsius and vice versa
- Offline functionality
- Animated thermometer
- Contextual labels
- Dark mode support
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tempConvert is the fastest way to convert between Fahrenheit and Celsius — no ads, no clutter, no internet required. Just type a temperature and get an instant result. Whether you're traveling abroad, cooking, checking a weather forecast, or following a scientific formula, tempConvert gives you the answer in under a second. FEATURES Instant conversion — results update as you type Fahrenheit to Celsius and Celsius to Fahrenheit Negative temperature support for sub-zero values Animated thermometer that reflects current temperature Contextual labels so you know what the number actually feels like Works completely offline — no data collection, ever Full dark mode support Supports iPhone and iPad REFERENCE TEMPERATURES INCLUDED Water boils: 212°F / 100°C Body temperature: 98.6°F / 37°C Room temperature: 72°F / 22.2°C Water freezes: 32°F / 0°C Absolute zero: -459.67°F / -273.15°C THE FORMULAS °F to °C: subtract 32, multiply by 5, divide by 9 °C to °F: multiply by 9, divide by 5, add 32 tempConvert is simple by design. Open it, type a number, get your answer.
Ultra Dark Mode Extension
This extension automatically applies a dark theme to any website for more comfortable browsing, especially at night. It's fast, lightweight, and prioritizes user privacy by storing settings locally.
- Automatic dark theme for all websites
- Reduces eye strain
- One-tap toggle
- System dark mode sync
- Keyboard shortcut support
- Local theme generation
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Dark Mode is a Safari extension that creates a dark theme for every website, on the fly. It analyzes each page and generates comfortable dark colors so you can browse at night and through long days without straining your eyes. WHY YOU'LL LIKE IT - Works everywhere — automatically applies a dark theme to almost any site, even ones that don't offer one. - Easy on the eyes — reduces glare and harsh white backgrounds for more comfortable reading. - One tap to toggle — turn dark mode on or off for the current site or for everything. - Follows your system — can switch automatically when macOS or iOS dark mode is on. - Keyboard shortcut — toggle the current site instantly. - Fast and lightweight — themes are generated locally in your browser. PRIVACY FIRST Your settings are stored on your device. Dark Mode does not require an account and does not collect personal data. See our privacy policy at https://darkmodes.org/privacy.html Enable Dark Mode in Safari settings, then enjoy a darker, calmer web.
Screenshots
Verdict
The clearest difference is rating: tempConvert at 5.0 against Ultra Dark Mode Extension's 4.0. tempConvert also leads on in-app purchases (none vs 3). Ultra Dark Mode Extension's advantage is review sentiment (100% vs 89%) and update cadence (every 5 weeks vs every 2 months). On price, ratings volume, 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. Ultra Dark Mode Extension sells 3 in-app purchases, starting at $5.99 per 7 days. tempConvert asks for nothing beyond the download.
tempConvert holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews complicate that: 89% of tempConvert's written reviews are positive against 100% of Ultra Dark Mode Extension's, so the app with the better star average is not the one people write more warmly about.
tempConvert ships an update every 2 months, Ultra Dark Mode Extension every 5 weeks. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.
| Parameter | tempConvert | Ultra Dark Mode Extension |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | 88.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 1 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Anderson | Pro App Company Limited |
Customer experience
tempConvert
Ultra Dark Mode Extension
In-app purchases
tempConvert
No in-app purchases
Ultra Dark Mode Extension
- Weekly Pro3 Days trial$5.997 Days
- Yearly Pro$29.991 Year
- Lifetime Pro$59.99
Questions
Is tempConvert free?
Is Ultra Dark Mode Extension free?
Which has better reviews, tempConvert or Ultra Dark Mode Extension?
Do tempConvert or Ultra Dark Mode Extension have ads?
Which is updated more often, tempConvert or Ultra Dark Mode Extension?
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