Comparison

Chord Studio vs WhatChord MIDI

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

Head to head
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/

About

WhatChord MIDI

Identify chords from live MIDI input or manual note entry. Explore harmony, build chords, and browse scales with musically informed analysis. Learn and understand music theory with real-time feedback.

Highlights
  • Real-time chord recognition
  • Manual chord lookup
  • Explore chords and scales
  • Musically informed analysis
  • Alternative chord interpretations
  • MIDI compatibility
Read full description

Identify chords from live MIDI or manual note entry, follow the key as you play, then explore the harmony behind them. Stop guessing what chord you're playing. WhatChord gives musicians fast, musically informed chord names and live key context. Connect a Bluetooth or USB MIDI keyboard for instant feedback, or use the lookup pad to enter notes from any instrument, sheet music, or recording. Auto key detection listens to your recent live chords, shows confidence, and waits when the evidence is ambiguous. Explore Chords and Explore Scales let you build and hear chords, browse a wide range of scales, inspect keyboard patterns, and understand diatonic harmony. Play it. Explore it. Learn it. WhatChord goes beyond simple note matching. Its musically informed analysis considers inversions, extensions, slash chords, altered tones, key context, and conventional naming practices so chord names appear the way musicians expect to see them. When you're comping with a bassist, Ensemble mode names rootless voicings as the chords they imply and marks the implied root on the keyboard. FEATURES - Real-time chord recognition Chord names update immediately as you play. - Automatic key detection Auto mode estimates the current key from recent live chords, shows confidence across major and minor keys, and can keep the app's key context following your playing. - Manual chord lookup Enter notes directly to identify a chord, choose its bass note, and inspect alternative interpretations without connecting a MIDI device. - Explore chords Tap the chord card to open explore mode and build or hear chords without a keyboard by adjusting the root, quality, extensions, and bass note. - Explore scales Tap the scale-degree strip to browse a wide range of scales with tones, keyboard patterns, and diatonic chords. - Musically informed analysis Recognizes inversions, extensions, slash chords, upper structures, altered tones, and complex harmony. - Ensemble mode When comping with a bassist, switch to Ensemble so rootless voicings are named as the chords they imply. - Alternative interpretations See other valid chord names when more than one reading makes musical sense. - Context-aware spelling Uses enharmonic notation based on key signature and chord function. - Customizable notation Choose the chord symbol style you prefer. - MIDI compatibility Works with standard Bluetooth MIDI and USB MIDI keyboards and controllers. RECOGNITION WhatChord identifies everything from simple triads to rich extended harmony and follows key context from real playing. Whether you're practicing theory, learning progressions, exploring altered dominants, or working through dense extended chords, the app names what you play with accuracy and musical intent. PRIVACY WhatChord is free, contains no ads, and collects no personal data. All analysis happens locally on your device. GET STARTED Play through MIDI, enter notes manually, or start exploring chords, keys, and scales right away.

Screenshots

Chord Studio4 screens
WhatChord MIDI4 screens

Verdict

The call

The clearest difference is in-app purchases: WhatChord MIDI at none against Chord Studio's 2. WhatChord MIDI also leads on iOS requirement (15.0 vs 26.0). On price, rating, review sentiment and ratings volume 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

Both are free to download. Chord Studio sells 2 in-app purchases, starting at $1.99 per month. WhatChord MIDI 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 Chord Studio against 5.0 for WhatChord MIDI. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Chord Studio ships an update every 8 days, WhatChord MIDI weekly. The most recent releases landed on October 13, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
Chord Studio versus WhatChord MIDI: the parameters behind the verdict, then further details
ParameterChord StudioWhatChord MIDI
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 8 daysWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS26.015.0 — better
Further details — not scored
Size198 MB24 MB
Age rating4+4+
DeveloperJin ZhangAaron Bull Schaefer

Customer experience

Chord Studio

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

WhatChord MIDI

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

In-app purchases

2 purchases

Chord Studio

Subscriptions1
  • Chord Studio Pro$1.991 Month
One-time1
  • Chord Studio Pro Lifetime$29.99
None

WhatChord MIDI

No in-app purchases

Questions

Is Chord Studio free?
Chord Studio is free to download, with in-app purchases available.
Is WhatChord MIDI free?
WhatChord MIDI is free to download, with no in-app purchases.
Which has better reviews, Chord Studio or WhatChord MIDI?
Chord Studio and WhatChord MIDI are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Chord Studio or WhatChord MIDI have ads?
Neither Chord Studio nor WhatChord MIDI shows ads.
Which is updated more often, Chord Studio or WhatChord MIDI?
Chord Studio ships an update every 8 days, and WhatChord MIDI weekly. Most recently, Chord Studio was updated on October 13, 2026 and WhatChord MIDI on October 22, 2026.

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