# Temperature Converter vs Units Plus Converter

The clearest difference is price: Temperature Converter at Free against Units Plus Converter's $19.99. Units Plus Converter's advantage is in-app purchases (none vs 3) and update cadence (every 5 weeks vs every 6 months). On rating, review sentiment, ratings volume and ads there is nothing between them.

Temperature Converter is free to download; Units Plus Converter costs $19.99 up front. Temperature Converter sells 3 one-off in-app purchases. Units Plus Converter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Temperature Converter against 4.9 for Units Plus Converter. Both are backed by a comparable volume of ratings — 6.3K and 8.4K respectively. Written reviews split almost evenly too, at 91% and 91% positive.

Temperature Converter ships an update every 6 months, Units Plus Converter every 5 weeks. The most recent releases landed on October 17, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Temperature Converter | Units Plus Converter |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [4.8 (6.3K ratings)](https://appshunter.io/ios/app/temperature-converter/id449608609/reviews) | **[4.9 (8.4K ratings)](https://appshunter.io/ios/app/units-plus-converter/id593306620/reviews)** |
| Number of ratings | 6.3K | **8.4K** |
| Positive reviews | **91.5% of reviews** | 91.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 11 MB | 7 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [Alan Mrvica](https://appshunter.io/developer/593306623) |

## What reviewers say

### Temperature Converter

[App page](https://appshunter.io/ios/app/temperature-converter/id449608609)

Easily convert temperatures between Celsius, Fahrenheit, and Kelvin with a clean and intuitive interface. This utility app offers quick and accurate conversions for everyday use. Ads are present but can be removed via a one-time purchase.

**Highlights:** Celsius conversion, Fahrenheit conversion, Kelvin conversion, User-friendly interface, Ad removal option

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Reduced | $0.99 | one-time |
| Upgrade | $1.99 | one-time |
| Upgrade Hero | $3.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Accurate and fast conversions
- 💡 Useful for international communication
- 🚀 Excellent app for the job
- 👍 Straightforward and effective

**What reviewers complain about**

- 🔍 Needs more customization options
- 💰 Too many ads
- 🔍 Inaccurate temperature calculations

**Reported bugs**

- Inaccurate Kelvin temperature conversions
- Occasional crashes or freezes

**Requested features**

- Add Rankine temperature scale
- Increase font size for better readability
- Provide color customization options


### Units Plus Converter

[App page](https://appshunter.io/ios/app/units-plus-converter/id593306620)

Easily convert between various units and currencies with a simple, intuitive interface. Features live currency updates for 155 world currencies, refreshed every 15 minutes. Optimized for a wide range of Apple devices, including iPads with Split View support.

**Highlights:** Unit conversion across 12 categories, Live currency updates for 155 currencies, Optimized for iPhone and iPad, iPad Split View support, Data-computer data conversion, Fuel-mileage conversion

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient and reliable
- 💰 Worth the purchase
- 🌍 Helpful for travel and international use
- 📊 Comprehensive range of conversions

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔢 Limited unit options in some categories
- 🔍 Unintuitive interface for certain conversions
- 💰 Overpriced for the features offered

**Reported bugs**

- Decimal input not working
- Currency conversion not updating properly
- App crashing on certain devices

**Requested features**

- Add feet and inches conversion option
- Include kilojoules to calories conversion
- Improve currency conversion accuracy
- Add time zone conversion feature
- Provide more advanced unit options (e.g. torque, density)


## Frequently asked questions

### Is Temperature Converter free?

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

### Is Units Plus Converter free?

Units Plus Converter costs $19.99, with no in-app purchases.

### Which has better reviews, Temperature Converter or Units Plus Converter?

Units Plus Converter is rated higher. Temperature Converter averages 4.8 out of 5 from 6.3K ratings, while Units Plus Converter averages 4.9 from 8.4K ratings.

### Do Temperature Converter or Units Plus Converter have ads?

Neither Temperature Converter nor Units Plus Converter shows ads.

### Which is updated more often, Temperature Converter or Units Plus Converter?

Temperature Converter ships an update every 6 months, and Units Plus Converter every 5 weeks. Most recently, Temperature Converter was updated on October 17, 2026 and Units Plus Converter on October 19, 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.*