Comparison

5ths Machine vs Chord Studio

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

Head to head
About

5ths Machine

Explore the theoretical intricacies of key signatures with an interactive quiz. Learn about the 12-position equal temperament system and discover how to identify keys with an unusual number of sharps. Understand music theory through a unique perspective.

Highlights
  • Key signature quiz
  • Equal temperament system explanation
  • Theoretical key signature exploration
  • Background information on music theory
  • Quiz tips and strategies
  • Chronology of music theory concepts
Features
Read full description

Think you know your key signatures cold? Answer this: which key has 41 sharps? The equal temperament system is a circle with 12 positions, just like a clock. And, just like on a clock, the hands keep going around and around forever. The key signature of 41 sharps is theoretically consistent with the Western diatonic system ― learn why, and learn how to find out what key it is. The Background Information and the Quiz Tips explain the system in detail, and Chronology puts it all in perspective. Enjoy the “Perpetual 5ths Machine Boogie” while key signatures you’ve never seen before pass by on parade. Then, buckle down and solve the Quiz questions. NOW you understand music theory the 5ths Machine way!

About

Chord Studio

This app helps musicians play, recognize, and create chord progressions. It offers real-time chord recognition, MIDI keyboard support, and tools to craft and export custom musical arrangements. Enjoy a distraction-free experience with a clean interface and regular updates.

Highlights
  • Real-time chord recognition
  • Custom chord progression creation
  • MIDI keyboard support
  • Chord lookup and voicings
  • Built-in metronome
  • Export progressions to MIDI
Features
Read full description

Easily create chord progressions, spark unlimited inspiration. - Craft custom chord progressions with just a few taps - Instantly hear how your chords sound together - Choose from a wide range of instruments and playing styles - Customize playback with humanize, transposition, voicing adjustments, and more - Auto-detect chords from MIDI input for faster editing - Share with friends or export your progressions to MIDI files Designed for Musicians - Minimal, elegant design for the best user experience - Light / Dark Mode and customizable theme colors - 100% ad-free, so you can focus on your music - Regular updates with new features and content For questions or feedback, contact us anytime at  chordstudio3572@outlook.com Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

5ths Machine4 screens
Chord Studio4 screens

Verdict

The call

The clearest difference is price: Chord Studio at Free against 5ths Machine's $1.99. Chord Studio also leads on update cadence (every 8 days vs every 24 months). 5ths Machine's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 26.0). On rating, ratings volume, ads and device support 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

Chord Studio is free to download; 5ths Machine costs $1.99 up front. Chord Studio sells 2 in-app purchases, starting at $1.99 per month. 5ths Machine asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for 5ths Machine against 5.0 for Chord Studio. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

5ths Machine ships an update every 24 months, Chord Studio every 8 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
5ths Machine versus Chord Studio: the parameters behind the verdict, then further details
Parameter5ths MachineChord Studio
Price$1.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 24 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better26.0
Further details — not scored
Size18 MB198 MB
Age rating4+4+
DeveloperLucy HudsonJin Zhang

Customer experience

5ths Machine

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Chord Studio

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

5ths Machine

No in-app purchases

2 purchases

Chord Studio

Subscriptions1
  • Chord Studio Pro$1.991 Month
One-time1
  • Chord Studio Pro Lifetime$29.99

Questions

Is 5ths Machine free?
5ths Machine costs $1.99, with no in-app purchases.
Is Chord Studio free?
Chord Studio is free to download, with in-app purchases available.
Which has better reviews, 5ths Machine or Chord Studio?
5ths Machine and Chord Studio are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do 5ths Machine or Chord Studio have ads?
Neither 5ths Machine nor Chord Studio shows ads.
Which is updated more often, 5ths Machine or Chord Studio?
5ths Machine ships an update every 24 months, and Chord Studio every 8 days. Most recently, 5ths Machine was updated on November 3, 2026 and Chord Studio on October 30, 2026.

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