# Units+ vs Unit Converter Calculator Pro

The clearest difference is update cadence: Unit Converter Calculator Pro at monthly against Units+'s every 5 months. Unit Converter Calculator Pro also leads on iOS requirement (13.0 vs 15.5). Units+'s advantage is review sentiment (85% vs 76%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Units+ sells 2 one-off in-app purchases and Unit Converter Calculator Pro sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Units+ against 4.7 for Unit Converter Calculator Pro. Both are backed by a comparable volume of ratings — 375 and 992 respectively. Written reviews are what separate them: 85% of Units+'s written reviews are positive against 76% of Unit Converter Calculator Pro's.

Units+ ships an update every 5 months, Unit Converter Calculator Pro monthly. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Units+ | Unit Converter Calculator Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (375 ratings)](https://appshunter.io/ios/app/units-plus/id687296545/reviews)** | [4.7 (992 ratings)](https://appshunter.io/ios/app/unit-converter-calculator-pro/id1343845631/reviews) |
| Number of ratings | 375 | **992** |
| Positive reviews | **85.0% of reviews** | 76.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 37 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hebaallah Hossameldien](https://appshunter.io/developer/1632619093) | [Rome Rock LLC](https://appshunter.io/developer/1190244007) |

## What reviewers say

### Units+

[App page](https://appshunter.io/ios/app/units-plus/id687296545)

Easily convert between over 260 measurement units across 22 categories and get real-time currency exchange rates for more than 160 currencies. Quickly find units or bookmark frequent conversions for efficient use.

**Highlights:** 260+ measurement units, 22 unit categories, 160+ currencies, Real-time exchange rates, Unit search, Bookmarking conversions

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro Features | Free | one-time |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 👍 Reliable tool
- 👍 Versatile converter
- 👍 Great for various conversions (mass, temps, currency, distances)
- 👍 Does what it needs to do

**What reviewers complain about**

- 😠 Too many ads
- 😠 Ads without an X to close
- 😠 Negative sentiment towards the app's creator/provider (implied by one review)
- 😐 Fuel economy display issues (mpg/liters to 100)
- 😐 Some discrepancy in currency accuracy noted

**Reported bugs**

- Ads don't have an X to close

**Requested features**

- Add a Notification Center widget
- Way to mark favorite types of conversions


### Unit Converter Calculator Pro

[App page](https://appshunter.io/ios/app/unit-converter-calculator-pro/id1343845631)

Easily convert between metric and imperial units for a wide range of measurements including area, speed, temperature, and weight. Supports scientific prefixes and offers a history of your conversions. No internet connection required.

**Highlights:** Metric to Imperial unit conversion, Imperial to Metric unit conversion, Area, speed, temperature, volume, weight conversions, Scientific prefixes support, Conversion history, Offline functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlock Themes | $2.99 | one-time |
| Remove Ads & Unlock Themes 1 | $4.99 | one-time |
| Remove Ads & Unlock Themes 2 | $6.99 | one-time |
| Remove Ads & Unlock Themes 3 | $9.99 | one-time |

**What reviewers like**

- 🚀 Easy & accurate
- 🚀 Excellent Tool
- 👍 Goog for social
- 👍 Excelente para mi trabajo
- 👍 Sencillez

**What reviewers complain about**

- 👎 Hard to use interface
- 👎 Lacks pressure units
- 👎 No reverse button
- 👎 Metric to imperial format not user-friendly

**Reported bugs**

- 🐛 Changing to something else

**Requested features**

- 💡 Favorite conversations
- 💡 Color-coded sections
- 💡 Money conversion


## Frequently asked questions

### Is Units+ free?

Units+ is free to download, with in-app purchases available.

### Is Unit Converter Calculator Pro free?

Unit Converter Calculator Pro is free to download, with in-app purchases available.

### Which has better reviews, Units+ or Unit Converter Calculator Pro?

Units+ is rated higher. Units+ averages 4.7 out of 5 from 375 ratings, while Unit Converter Calculator Pro averages 4.7 from 992 ratings.

### Do Units+ or Unit Converter Calculator Pro have ads?

Both Units+ and Unit Converter Calculator Pro show ads.

### Which is updated more often, Units+ or Unit Converter Calculator Pro?

Units+ ships an update every 5 months, and Unit Converter Calculator Pro monthly. Most recently, Units+ was updated on October 23, 2026 and Unit Converter Calculator Pro on October 22, 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.*