# Unit Converter Pro HD. vs Chord

Unit Converter Pro HD. and Chord both sit at 4.6 stars, but that hides the real split: 87% of Unit Converter Pro HD.'s written reviews are positive against 57% of Chord's. Unit Converter Pro HD. also leads on price ($0.99 vs $3.99) and iOS requirement (13.0 vs 15.0). Chord's advantage is update cadence (monthly vs every 2 months) and device support (5 vs 3). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Unit Converter Pro HD. costs $0.99 and Chord $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Unit Converter Pro HD. against 4.8 for Chord. Both are backed by a comparable volume of ratings — 187 and 81 respectively. Written reviews are what separate them: 87% of Unit Converter Pro HD.'s written reviews are positive against 57% of Chord's.

Unit Converter Pro HD. ships an update every 2 months, Chord monthly. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Unit Converter Pro HD. | Chord |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | [4.6 (187 ratings)](https://appshunter.io/ios/app/unit-converter-pro-hd/id458584668/reviews) | **[4.8 (81 ratings)](https://appshunter.io/ios/app/chord/id1500126852/reviews)** |
| Number of ratings | **187** | 81 |
| Positive reviews | **86.7% of reviews** | 57.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Paid |
| Size | 13 MB | 47 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [良峰 侯](https://appshunter.io/developer/654444245) | [Roman Sevastyanov](https://appshunter.io/developer/1448837134) |

## What reviewers say

### Unit Converter Pro HD.

[App page](https://appshunter.io/ios/app/unit-converter-pro-hd/id458584668)

Easily convert between over 700 units of measure across 30 categories. This powerful tool acts as a universal assistant for all your conversion needs, saving you time and effort.

**Highlights:** 30 conversion categories, Over 700 units of measure, Backspace key for corrections, Intuitive and easy to use, Supports Dark Mode

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and efficient
- 👍 Easy to use
- 👍 Comprehensive unit conversions
- 👍 Accurate calculations
- 👍 Handy and useful

**What reviewers complain about**

- 🐛 Missing some important units
- 🔍 Difficult to navigate and find desired units
- 🔍 Cluttered interface with too many options
- 🔋 High battery consumption

**Reported bugs**

- Incorrect fuel consumption conversions
- Conversion values disappearing after update

**Requested features**

- Add support for more units (e.g. knots, stone, electron volts)
- Improve navigation and make it easier to find desired units
- Add portrait mode support
- Optimize interface for better usability


### Chord

[App page](https://appshunter.io/ios/app/chord/id1500126852)

Unlock musical creativity with a suite of tools for composing and practicing. Generate chord progressions, practice notation, train your ear, and even use your device as a MIDI keyboard. Includes a macOS version for seamless integration.

**Highlights:** Chord progression generation with inversions and extensions, Live playback as piano or synth, MIDI output to macOS, Guitar chord finder, Notation reading practice, Ear training for intervals and voice, macOS version included

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter Pro HD. free?

Unit Converter Pro HD. costs $0.99, with no in-app purchases.

### Is Chord free?

Chord costs $3.99, with no in-app purchases.

### Which has better reviews, Unit Converter Pro HD. or Chord?

Chord is rated higher. Unit Converter Pro HD. averages 4.6 out of 5 from 187 ratings, while Chord averages 4.8 from 81 ratings.

### Do Unit Converter Pro HD. or Chord have ads?

Neither Unit Converter Pro HD. nor Chord shows ads.

### Which is updated more often, Unit Converter Pro HD. or Chord?

Unit Converter Pro HD. ships an update every 2 months, and Chord monthly. Most recently, Unit Converter Pro HD. was updated on November 1, 2026 and Chord on October 29, 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.*