# tempConvert vs Ultra Dark Mode Extension

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.

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.

## The numbers

| Metric | tempConvert | Ultra Dark Mode Extension |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tempconvert/id350028121/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/ultra-dark-mode-extension/id6772494943/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | 88.9% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 1 MB | 18 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Greg Anderson](https://appshunter.io/developer/345127565) | [Pro App Company Limited](https://appshunter.io/developer/705247168) |

## What reviewers say

### tempConvert

[App page](https://appshunter.io/ios/app/tempconvert/id350028121)

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.

**Highlights:** Instant temperature conversion, Fahrenheit to Celsius and vice versa, Offline functionality, Animated thermometer, Contextual labels, Dark mode support

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

**In-app purchases:** none


### Ultra Dark Mode Extension

[App page](https://appshunter.io/ios/app/ultra-dark-mode-extension/id6772494943)

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.

**Highlights:** Automatic dark theme for all websites, Reduces eye strain, One-tap toggle, System dark mode sync, Keyboard shortcut support, Local theme generation

**Features:** Safari Extension, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $5.99 | per 7 days |
| Yearly Pro | $29.99 | per year |
| Lifetime Pro | $59.99 | one-time |


## Frequently asked questions

### Is tempConvert free?

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

### Is Ultra Dark Mode Extension free?

Ultra Dark Mode Extension is free to download, with in-app purchases available.

### Which has better reviews, tempConvert or Ultra Dark Mode Extension?

tempConvert is rated higher. tempConvert averages 5.0 out of 5 from 2 ratings, while Ultra Dark Mode Extension averages 4.0 from 4 ratings.

### Do tempConvert or Ultra Dark Mode Extension have ads?

Neither tempConvert nor Ultra Dark Mode Extension shows ads.

### Which is updated more often, tempConvert or Ultra Dark Mode Extension?

tempConvert ships an update every 2 months, and Ultra Dark Mode Extension every 5 weeks. Most recently, tempConvert was updated on October 6, 2026 and Ultra Dark Mode Extension on October 15, 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.*