Synth Box: Music Synthesizer

Synth Box turns your Phone and Tablet 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 Android Phones and Tablets

• Clean light and dark themes

• No account and no sign-up required

• We never collect your data

• 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, and MIDI support. 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.