# Unit Converter vs nControl

The clearest difference is rating: nControl at 5.0 against Unit Converter's 4.3. nControl also leads on in-app purchases (none vs 2) and ads (none vs shown). On price, ratings volume, update cadence and device support there is nothing between them.

Both are free to download. Unit Converter sells 2 in-app purchases, starting at $0.99 per month. nControl asks for nothing beyond the download.

nControl holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

Unit Converter ships an update every 9 days, nControl weekly. The most recent releases landed on September 29, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Unit Converter | nControl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/unit-converter-best-unit-app/id6450140068/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ncontrol/id6480476991/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 24 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Ankur Kalkani](https://appshunter.io/developer/1684873234) | [Cardinal/Detecto Scale Company](https://appshunter.io/developer/661826679) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-best-unit-app/id6450140068)

This app offers a comprehensive suite of conversion tools for various units and currencies. It simplifies complex calculations across physical dimensions, mass, time, energy, electricity, and more. Ideal for students and professionals needing precise measurements.

**Highlights:** Currency conversion, Physical dimension conversion, Mass, weight, and force conversion, Time and motion conversion, Energy, heat, and light conversion, Electricity conversion, Data storage conversion

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $0.99 | per year |


### nControl

[App page](https://appshunter.io/ios/app/ncontrol/id6480476991)

This application enables users to connect to and send commands to specific display devices via Bluetooth. It facilitates remote control of SB600 display units from Cardinal Scales.

**Highlights:** Bluetooth connectivity, Send commands to SB600 display, Control Cardinal Scales devices, Remote device management

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is nControl free?

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

### Which has better reviews, Unit Converter or nControl?

nControl is rated higher. Unit Converter averages 4.3 out of 5 from 3 ratings, while nControl averages 5.0 from 3 ratings.

### Do Unit Converter or nControl have ads?

Unit Converter shows ads; nControl does not.

### Which is updated more often, Unit Converter or nControl?

Unit Converter ships an update every 9 days, and nControl weekly. Most recently, Unit Converter was updated on September 29, 2026 and nControl on October 18, 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.*