The pocket stylophone, on your iPhone. Slide to play, follow the glowing key to learn 14 songs, and use it as an AUv3 plug-in in your music apps.
Play a real pocket stylophone — then plug it straight into GarageBand. Retro Synth · Syntophone turns your device into a vintage touch-keyboard synthesizer, and now works as an AUv3 instrument inside GarageBand, Logic Pro, and AUM.
Slide your finger across the keys and a warm, authentic square-wave synth comes to life. Learn built-in songs with light-up "follow the key" tutorials, record your ideas, and drop the instrument into your favorite music app — all from one tiny synth. Like the original, it plays one note at a time: one stylus, one note. Curious about Pro? Tap any locked sound and hear it free for 30 seconds.
FREE FEATURES (Included at no cost):
• Authentic Vintage Sound: faithfully recreates that iconic square-wave tone with modern precision.
• Song Mode: learn songs with light-up "follow the key" tutorials, hold-to-repeat for repeated notes, and a star rating when you finish (2 songs free).
• My Recordings: a full library to play back, rename, share, and delete your takes.
• Metronome: a sample-accurate click with adjustable BPM and an accented downbeat to keep you in time.
• AUv3 Instrument: use Syntophone as a plug-in inside GarageBand, Logic Pro, AUM and other AUv3 hosts.
• Sound Controls: shape your tone from thin and bright to thick and warm, and add expression with vibrato.
• Real-time Response: instant, zero-latency audio as you play.
• Clean, minimalist design inspired by vintage hardware.
SYNTOPHONE PRO (subscription):
Upgrade to unlock the full studio:
• Premium Waveforms: Sine, Sawtooth, and Triangle.
• Studio Effects: high-quality Reverb and Delay.
• Pro Sound Panel: a second detuned oscillator for a fatter analog tone, hands-on delay time & feedback controls, and live MIDI output — play GarageBand and other synth apps as a virtual MIDI keyboard.
• 12 more built-in songs to learn.
• MIDI Export: save and share your recordings as .mid files.
WHY SYNTOPHONE?
No setup, no menus to fight — open the app and make music immediately. Then, when you're ready, it becomes a plug-in in your studio.
Note: The app includes an auto-renewable subscription (Syntophone Pro) for premium features.
For Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
• NEW: Try Pro sounds free for 30 seconds. Tap a locked waveform or effect and hear it before you decide.
• NEW: Redesigned Pro screen.
• NEW: Settings with a haptic feedback switch, restore purchases and manage subscription.
• iPad: portrait mode support.
• Polish and fixes.
Version 1.3.1
The developer, Kerem ERSU, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Kerem ERSU
Size
14.5 MB
Category
Music
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.