1. Home
  2. Topics
  3. Change Song Key

Best Change Song Key Apps

249+ iOS apps curated and reviewed

3.6 avg rating
19 free apps
Updated October 2026

If you already know Music Transpose, this is the deeper bench. 249+ change song key apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.

Compare top Change Song Key Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Music Transpose - Key ChangerMusic Transpose - Key ChangerFree4.6★ (200)NoYesNov 2026
2Song Key FinderSong Key FinderFree2.8★ (106)YesYesOct 2026
3Auto-Key | Music key detectionAuto-Key | Music key detectionFree3.8★ (96)NoNoNov 2026
4SHIFT — Tempo & Key ChangerSHIFT — Tempo & Key ChangerFree—NoYesOct 2026
5KeyBee - BPM & KeyKeyBee - BPM & KeyFree—NoNoOct 2026
6Song Key Finder 2Song Key Finder 2Free—YesYesOct 2026
7myUNIQA AustriamyUNIQA AustriaFree4.7★ (54)NoNoNov 2026
8Music Factory Lite -Music Factory Lite -Free1.7★ (57)NoYesOct 2026

Top Picks for Change Song Key

Music Transpose - Key Changer#1

Music Transpose - Key Changer by 同宝 金

Change the key of the song
Editor's Choice
🎵 Music
4.6(200 ratings)
FreeIn-App Purchases
Music Transpose - Key Changer screenshot 1
Music Transpose - Key Changer screenshot 2
Music Transpose - Key Changer screenshot 3
Music Transpose - Key Changer screenshot 4

Easily change the key and tempo of your music files. This app supports various audio and video formats, offering intuitive pitch and speed adjustments with visual feedback on sound quality. It's designed for musicians and learners seeking a user-friendly alternative to complex professional software.

Song Key Finder#2

Song Key Finder by nCore App Services

Find the key of music
Strong Contender
🎵 Music
2.8😞(106 ratings)
FreeAdsIn-App Purchases
Song Key Finder screenshot 1
Song Key Finder screenshot 2
Song Key Finder screenshot 3
Song Key Finder screenshot 4
Song Key Finder screenshot 5
Song Key Finder screenshot 6

Identify the musical key of songs through microphone analysis, local audio files, or manual chord input. Results can be saved for later reference, and the app supports songs that change key mid-way.

What We Love

  • 👍 Works perfectly for some
  • 🚀 Fast key detection
  • ✅ Does what it advertises
  • 💯 Highly recommended by some
  • ✨ Brilliant for audio engineers
  • 👍 Easy to use for some

Room to Improve

  • 😞 Inaccurate key detection
  • 💰 Expensive for features
  • 🔒 Invasive data tracking
  • 🚫 Files won't open
  • 💸 Charged multiple times
  • ❌ Doesn't load MP3s
  • 👎 Not useful for many
  • 🤔 Relative minor knowledge needed
  • ⚠️ Stops other audio playback
  • 😩 Annoying tracking requests
  • 🤷‍♂️ Keyboard removed
Auto-Key | Music key detection#3

Auto-Key | Music key detection by Antares Audio Technologies, LLC

Music key and scale detection
Worth Considering
🎵 Music
3.8😐(96 ratings)
Free
Auto-Key | Music key detection screenshot 1
Auto-Key | Music key detection screenshot 2
Auto-Key | Music key detection screenshot 3
Auto-Key | Music key detection screenshot 4
Auto-Key | Music key detection screenshot 5
Auto-Key | Music key detection screenshot 6

Instantly identify the musical key and scale of any audio source, from studio tracks to live instruments and vocals. Seamlessly sync detected keys with your computer's Digital Audio Workstation (DAW) for enhanced music production.

What We Love

  • 👍 Accurate key detection (most of the time)
  • 👍 Useful for learning songs
  • 👍 Handy keyboard display for novice players
  • 👍 Free to use (initially)
  • 👍 Good for vocal production
  • 👍 Integrates with Auto-Tune
  • 👍 Simple and functional
  • 👍 Scales feature is a great addition
  • 👍 Works as advertised
  • 👍 "The Gold Standard. Fast & No Frills."
  • 👍 "Great app for making music !!!!"
  • 👍 "Super helpful product, great job"
  • 👍 "Excellent utility"
  • 👍 "Tut was es soll" (Works as it should)
  • 👍 "Parfait" (Perfect)
  • 👍 "Klappt immer" (Always works)
  • 👍 "Eine sehr gute App" (A very good app)
  • 👍 "Great App."
  • 👍 "Works as advertised."
  • 👍 "Solid, User Friendly Key Detection App"
  • 👍 "Amazing tool, much needed"

Room to Improve

  • 🐛 Inconsistent key detection
  • 🐛 Often gives wrong keys
  • 🐛 Slow performance
  • 🐛 Requires account creation after a few uses
  • 🐛 Privacy concerns with data sharing
  • 🐛 Account creation issues (buggy, can't access)
  • 🐛 Low volume for built-in keyboard
  • 🐛 Not recognizing modes other than major/minor
  • 🐛 App becomes unusable without account
  • 🐛 "Wrong Keys"
  • 🐛 "No good results"
  • 🐛 "Doesn’t work"
  • 🐛 "So many questions"
  • 🐛 "Was great, now not"
  • 🐛 "Didn’t work for me"
  • 🐛 "Waste of your time"
  • 🐛 "Seems pretty handy for picking harmonica keys"
  • 🐛 "What for?"
  • 🐛 "Sign in to use"
  • 🐛 "数回で" (Stopped working after a few times)
  • 🐛 "Privacy thief"
  • 🐛 "Truño" (Junk)
  • 🐛 "Stinks"
  • 🐛 "Em…"
  • 🐛 "Works great, until…"
  • 🐛 "This would be great if…"
  • 🐛 "Does not work"
  • 🐛 "Inconsistent key selection"
  • 🐛 "The volume"
  • 🐛 "Joke app"
  • 🐛 "Seems random"
  • 🐛 "I’m. It sure if it works because the piano scale volume is too low :/".
  • 🐛 "Nothing to do"
  • 🐛 "Requires login, does not support Sign in with Apple"
  • 🐛 "About Auto-key"
  • 🐛 "Not accurate at all unfortunately!"
  • 🐛 "Not always right"
  • 🐛 "Unusable"
  • 🐛 "Da vergeht ein der Spaß" (The fun disappears with your subscription)
  • 🐛 "The Redface" (Really good for key detection but…)
  • 🐛 "heyhoob" (The volume)

More Change Song Key apps to explore

FAQ about Change Song Key

What are the best change song key apps for iPhone?
Music Transpose - Key Changer tops our change song key apps ranking as of October 2026, with a 4.6-star average from 200 App Store ratings, and it's free to download.
Yes — 19 of the top change song key apps we rank are free to download, including Music Transpose - Key Changer and Song Key Finder.
Music Transpose - Key Changer has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 249+ change song key apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.