Gelato Synth · for iPhone
Make a sound that is yours.
An FM synthesizer for iPhone with pads that stay in key. Pick a sound, move a slider, and hear what changes.
Free to play. $4.99 once for the full version.
iOS 17+ · No ads, accounts or subscriptions.
Listen
A few sounds to start with
Made with Gelato Synth's own sounds and audio engine. Tap play to listen.
Play in key
Choose a scale and every pad belongs. Start with single notes, then try chords.
Shape your sound
Make basses, bells and pads with two oscillators, FM, a filter and effects.
Keep the good ideas
Record and share for free. The full version adds loops with up to eight layers.
What is free?
Start free. Keep playing.
Free
$0
- Notes mode with all nine scales
- A few sounds in each category
- Every sound control
- Quick record and share
Full version
$4.99 once
Everything free, plus:
- All 52 sounds and My Sounds
- Chords mode with seven chord types
- Eight-layer loops with beats
No subscription. Apple sets prices outside the US.
Explore every feature
- Playing
- Notes mode has three octaves of pads, Hold and octave controls. Chords mode adds the seven chords of your key plus the home chord an octave up. Choose triads, 7ths, 9ths, sus2, sus4, power or diminished chords.
- Oscillators and FM
- Osc A morphs between sine, triangle, saw, square and pulse. Osc B adds a ratio from x0.5 to x8, detune, its own level and FM modulation. Glide slides between notes.
- Envelope and noise
- Attack, Decay, Sustain and Release shape each note. Punch adds a fast pitch drop; Noise adds breath, hiss or a short burst for pick and mallet sounds.
- Filter and movement
- Choose a low-pass, band-pass or high-pass filter with cutoff, resonance, drive and envelope control. The LFO can move pitch, filter, FM, shape or volume.
- Space and recording
- Chorus, echo and reverb add space. Recordings save as .m4a files and open the share sheet. The full loop recorder includes Click, Rock, Hip Hop and Dance beats.
See more screenshots
Good to know
Is Gelato Synth free?
Yes. Notes mode with every scale, a few sounds in each category with every slider, and quick record are free for as long as you like. One $4.99 purchase opens the full library: chord buttons, every sound, the loop recorder, and saving your own sounds. There is no subscription.
Do I need to know music theory?
No. You pick a key and a scale and the pads only play notes from it, so any combination you press sounds right. The chord pads are labeled with Roman numerals and chord names, so you pick up the theory by playing.
Does it need the internet or an account?
No. Gelato Synth never connects to the internet. There is no account, no ads, and no analytics. Your sounds and recordings stay on your phone.
Where do my recordings go?
When you stop recording, the share sheet opens so you can AirDrop, message or save the file. Every recording is also saved in the Files app under On My iPhone, Gelato Synth, Recordings, as an .m4a file.
Can I use it with a computer or a mixer?
Plug a USB audio interface into your iPhone and iOS sends Gelato Synth's sound to it, so you can record it in any DAW or play it through a PA. You can also record in the app and AirDrop the file to your computer.
What kind of synth is it?
A two-oscillator FM synth with wavetable shapes, noise, an ADSR envelope with punch, a multimode filter with drive, one LFO, and echo and reverb. It is the same family of sound as the 80s FM keyboards, laid out so you can see what each part does.