Synth Box: Music Synthesizer
MIDI Keyboard, Sounds & FX
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Make music in seconds with a gorgeous analog-style synth: 100 pro sounds, live FX, recording, sharing and full MIDI. Start free - unlock everything with a 3-day trial.
Synth Box turns your iPhone and iPad into a beautiful, play-anywhere synthesizer. Tap a key and it sings. Twist a knob, roll the dice, and shape the sound your way. No setup, no complicated menus. Just gorgeous sound, instantly.
PLAY
• A slide-to-play keyboard with glissando, plus pitch and mod wheels
• Two morphing wavetable oscillators, a sub oscillator, FM and noise for huge, fat tones
• A warm Moog-style low-pass filter with resonance and an LFO
• ADSR envelope, octave shift and zoom for fast, expressive playing
100 PRO SOUNDS
• 100 hand-crafted presets across Bass, Lead, Pad, Pluck, Keys, Brass, Arp, Bell, Organ and FX
• Roll the dice for instant inspiration
• Tweak any sound and save your own patches to build a personal sound library
EFFECTS THAT MOVE
• Lush reverb, musical delay, bit-crusher and a wide Fatten ensemble chorus
• Shape space, movement and grit in real time while you play
RECORD & SHARE
• Capture your performance to WAV with reverb and delay tails included
• Play it back and share it anywhere with a tap
MIDI
• Connect any USB or Bluetooth MIDI controller
• Play Synth Box with external keys, wheels and knobs
• Send your notes back out to other apps and gear
MADE TO FEEL GOOD
• Designed for iPhone and iPad
• A clean light theme, plus a dark stage theme with Premium
• No account and no sign-up required
• No ads and no tracking
• Works fully offline
FREE TO PLAY. PREMIUM UNLOCKS EVERYTHING.
Play the synth, shape sounds and enjoy 20 starter presets for free.
Go Premium to unlock all 100 presets, recording and sharing, saving your own patches, MIDI support, the dark theme and the full-screen keyboard. Choose a monthly or yearly plan with a 3-day free trial, or unlock everything forever with a one-time Lifetime purchase.
Download Synth Box and make something beautiful in the next 60 seconds.
Terms of Use: https://alyakastudio.com/terms/
Privacy Policy: https://alyakastudio.com/privacy-policy/
A big update for Synth Box:
• Redesigned welcome tour and Premium screen, sized for every iPhone and iPad
• MIDI: choose the pitch bend range, send your notes out to other gear, and enjoy steadier controller connections
• Delay fixed: it now blends with your dry sound and follows the Mix knob
• Hold and Mono stay the way you left them
• Sound stops when headphones are unplugged
• Deleting a recording now asks for confirmation
• More reliable purchases and restore
• Many small fixes and improvements
The developer, Alper Kahriman, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Alper Kahriman
- Size
- 13.9 MB
- Category
- Music
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Yearly $19.99
- Lifetime $39.99
- Monthly $3.99
- Copyright
- © 2026 Alper Kahraman
