PulseKey Tuner
Key Finder & Instrument Tuner
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Tune guitar and ukulele for free, or try five song-key analyses. Unlock unlimited keys, custom tunings and audio tools with a one-time Pro purchase.
Get in tune. Find the key. Keep making music.
PulseKey puts an always-listening instrument tuner and a song key finder on your iPhone. Open Tuner and play a note, or tap Listen in Key finder to estimate the musical key of the sound around you. Audio analysis happens on your device.
START FREE
- Chromatic tuner for single notes.
- Standard guitar and ukulele presets.
- Live note, frequency and cents readings.
- Automatic string targeting or manual note lock.
- Keep the screen awake while you play.
- Five successful microphone analyses in Key finder, with an estimated key, harmonic profile, relative key and Camelot notation.
Failed or canceled key measurements do not use your five included analyses. The allowance is five successful analyses in total, not five per day.
PULSEKEY PRO: ONE PURCHASE, NO SUBSCRIPTION
Unlock Pro once for lifetime access to:
- Unlimited Key finder analyses.
- Alternate guitar tunings, four- and five-string bass, low-G ukulele, violin and mandolin presets.
- Custom tunings for your own instruments.
- Pitch trace, adjustable A4 reference and a reference tone.
- Audio-file import, selected-region analysis and loop playback.
- Estimated keys across sections of an imported recording.
- Saved measurements with titles and notes.
- Scale notes, diatonic chords, Open Key notation and compatible mixing keys.
- Experimental drum resonance and lug-comparison tools.
ALREADY BOUGHT PULSEKEY?
If you purchased the paid app before this free-with-Pro update, lifetime Pro is included at no extra charge. Use the same Apple Account, and choose Restore Purchases in Settings if needed.
MADE FOR YOUR NEXT SESSION
Move quickly between Key finder and Tuner. PulseKey remembers your last mode, so you can pick up where you left off. No account, advertising or developer analytics. Microphone audio and imported files are not uploaded by PulseKey.
A NOTE ABOUT MEASUREMENTS
Key and pitch readings are estimates and depend on the instrument, room noise and microphone. For tuning, play one clear note at a time. Complex music can have more than one plausible key. Experimental drum readings may follow an overtone rather than the fundamental.
Pro is an optional one-time in-app purchase. Restore Purchases is available in Settings and on the Pro screen.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
PulseKey is now free to start.
- Always-listening chromatic, guitar and ukulele tuning is included.
- Try five successful microphone analyses in Key finder.
- Unlock unlimited keys and advanced tools with a one-time PulseKey Pro purchase. No subscription.
- Existing paid users keep lifetime Pro at no extra charge.
- A sharper mode selector, faster switching, and your last-used mode remembered.
- More responsive tuning, full-width string targets and improved audio-session handling.
Already purchased PulseKey? Use Restore Purchases in Settings if Pro has not appeared.
The developer, Erkan Erdogan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Erkan Erdogan
- Size
- 3.6 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- PulseKey Pro $9.99
- Copyright
- © 2026 BKLVA