Comparison

Unit Converter Pro HD. vs Chord

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Unit Converter Pro HD.

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
Read full description

The most powerful unit converter in the market. Helps you make easy conversion between more than 700+ various units of measure in 30 categories. Discover a universal assistant for all of your unit conversion needs. Features: √ 30 Categories √ 700+ Units of Measure √ Backspace key √ Extremely Easy-to-Use √ Supports Dark Mode Save Your Time. Quickly & Easily! Universer Unit Converter Pro HD URL scheme is "EWUnitConverterPro://"

About

Chord

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
Read full description

This app plus your ears equals complete freedom in writing music! A comprehensive set of tools for any musician: * Chord Progression: Create beautiful chord progressions with full flexibility - use inversions, sus2, sus4, 7th, 9th, and more. Enjoy live playback as piano or synth, or send MIDI directly to your macOS computer! * Guitar Chords - helps you find and browse guitar chords. * MIDI Keyboard: Transform your phone into a MIDI keyboard for your macOS computer (compatible with macOS Catalina and newer). * Notation Practice: Practice reading notes in both treble and bass clefs. * Chord Calculation: Help you learn how to calculate chords and progressions. * Interval Practice: Practice recognizing and comparing musical intervals by ear. * Voice & Ear Training: Simple, effective tools for voice practice and ear training. * Harmonic Match - helps you mix tracks in key while DJing. * Guitar tuner - helps you tune your guitar to the most popular tunings. * Modulation Pad - Helps when using a compact MIDI keyboard without built-in pitch and modulation controls. Also includes a sustain pedal (compatible with macOS Catalina and newer). Plus, enjoy the macOS version included with your purchase!

Screenshots

Unit Converter Pro HD.3 screens
Chord4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Unit Converter Pro HD. versus Chord: the parameters behind the verdict, then further details
ParameterUnit Converter Pro HD.Chord
Price$0.99 — better$3.99
Rating4.6 (187 ratings)4.8 (81 ratings) — better
Positive reviews86.7% of reviews — better57.1% of reviews
Number of ratings187 — better81
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac, Apple Watch — better
Requires iOS13.0 — better15.0
Further details — not scored
Size13 MB47 MB
Age rating4+4+
Developer良峰 侯Roman Sevastyanov

Customer experience

Unit Converter Pro HD.

All ratings187 ratings
Positive90.9%
Neutral3.2%
Negative5.9%
Written reviews331 reviews
Positive86.7%
Neutral4.2%
Negative9.1%

Chord

All ratings81 ratings
Positive95.1%
Neutral1.2%
Negative3.7%
Written reviews21 reviews
Positive57.1%
Neutral19.0%
Negative23.8%

Bugs and requests

Unit Converter Pro HD.

Reported bugs

2 issues
  • Incorrect fuel consumption conversions
  • Conversion values disappearing after update

Requested features

4 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Unit Converter Pro HD.

No in-app purchases

None

Chord

No in-app purchases

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.

Other comparisons