Best Song Key Finder 2 Apps

249+ iOS apps curated and reviewed

3.9 avg rating
17 free apps
Updated October 2026

The best song key finder 2 apps on iPhone average 3.9★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.

Compare top Song Key Finder 2 Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Song Key Finder 2Song Key Finder 2Free—YesYesOct 2026
2Auto-Key | Music key detectionAuto-Key | Music key detectionFree3.8★ (96)NoNoNov 2026
3Song Key FinderSong Key FinderFree2.8★ (106)YesYesOct 2026
4Key Finder - Analyze any scaleKey Finder - Analyze any scale$6.994.3★ (3)NoNoOct 2026
5SongPulse: BPM & Key FinderSongPulse: BPM & Key FinderFree2.0★ (1)YesYesOct 2026
6Genius: Song Lyrics FinderGenius: Song Lyrics FinderFree4.7★ (78K)YesNoNov 2026
7Music Recognition Song FinderMusic Recognition Song FinderFree3.7★ (57)YesYesOct 2026
8Song Key Finder | Music TheorySong Key Finder | Music Theory$4.99—NoYesNov 2026

Top Picks for Song Key Finder 2

Auto-Key | Music key detection#2

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

Music key and scale detection
Strong Contender
🎵 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)
Song Key Finder#3

Song Key Finder by nCore App Services

Find the key of music
Worth Considering
🎵 Music
2.8(106 ratings)
FreeAdsIn-App Purchases
Song Key Finder screenshot 1
Song Key Finder screenshot 2
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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.

More Song Key Finder 2 apps to explore

FAQ about Song Key Finder 2

Are there free song key finder 2 apps for iPhone?
Yes — 17 of the top song key finder 2 apps we rank are free to download, including Song Key Finder 2 and Auto-Key | Music key detection.
Song Key Finder 2 shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 249+ song key finder 2 apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.