AudioKit Digital D1 Synth 4+

Amazing 80s/90s Synthesizer

AudioKit Pro

    • 4.8 • 1.7K Ratings
    • $3.99
    • Offers In-App Purchases

iPad Screenshots


DECEMBER SALE ** $3.99 + FREE EXPANSION! ** NOTE: This is an old app. AUv3 & MIDI support is limited. We recommend our newer apps like Digitalism 2000 for AUv3 or MIDI

Epic 64-voice Virtual Analog / PCM iPad Synth
Inspired by the Digital Synths of the 80s and 90s

100% of proceeds from this app go to support the AudioKit open-source project & AudioKit Synth One.

*** TOP 3 iOS MUSIC APPS OF 2018 *** - Music Radar Awards
(Computer Music & Future Music Magazine)

** Featured By Apple in "New Apps We Love!" **
"A Perfect Synth" - App Advice, Apps of the Week
"Fans of the D-50, JD-990, 01/W, Wavestation... Rejoice!" - Music Radar

FULLY LOADED w/ 500+ presets by Brice Beasley, Matthew Fecher, Red Sky Lullaby, Jakob Haq, Dean Daughters (Electronisounds), Sound of Izrael, Brian Funk, and more

"D1 Sounds awesome... Get this app!"
- Sonic State, Featured D1 on Podcast & Live Video Stream

• 64-voice Hybrid Digital Poly Synthesis.
• Full 1+ Gigabyte of original samples recorded from analog & fm synths over 30+ years old
• Stand-alone iPad Synth, plus IAA & Audiobus
• Basic AUv3 Plugin support. Works best with AUM. We're working on upgrading Audio Unit support.
• Space-saving Compression - The whole app is under 200mb!
• Dual layers per voice. Keyboard splits. Velocity Scaling.
• Vintage-style Arp/Step Sequencer that can be routed to specific layers.
• 3 LFOs. Fun Routings. LFOs can modify other LFOs.
• Dual Independent per-Layer filters
• Plus, per-voice Harmonic key-tracked Envelope filters.

"Digital D1 Sounds and plays AMAZING!" - The Sound Test Room
"Rad retro synth sounds" - Cult of Mac, App of the Week
"AudioKit Digital D1 is a beautiful Synthesizer app that recreates the spirit of legendary synths" - Synth Anatomy

• FX: Glorious Reverb, Phaser, Digital Delay, Distortion, Flanger, Chorus, Crush, and more.
• Perfect with a MIDI Keyboard
• Ableton Link
• All kinds of awesome stuff
• The Sound. Oh, the sound. You won't believe it.

"Digital D1 synth is pure ‘80s and ‘90s digital lushness" - Computer Music/Music Radar
"Beautiful. Lush. Modern and Amazing… An Instant Classic."

Requires newer iPads for best performance. May be slow on iPad 4.
IAA is being deprecated by Apple in iOS 13. We're moving to AUv3 as well. Please replace IAA with AUv3 in your projects.

GarageBand Audio Unit (AUv3):
You can run one instance of D1 as an AUv3 in GarageBand. With a host like AUM, you can run 3 or more instances at once.

For iPad 4 - Open the "Settings" button (to the upper left above the keyboard). Turn the buffer to 512 or above. And turn the "CPU Efficient" toggle to on. If still having trouble, try closing other music apps and/or rebooting your iPad. Thanks!

Not sure if Digital D1 will work on your device?
Download our free AudioKit Synth One app


** NOMINATED: Best iOS Music Apps of 2018 **
by Computer Music & Future Music magazine.

"The Best Synth For iOS [period]"
"I've been playing synths for 35 years. And, this is as good as it gets"
"The Sound... Perfect!"
"Breathtaking Presets, right out-of-the box"
"The sound quality competes with hardware synths"

You want great sound right away? It has tons of presets.
Plus, the ability to easily manipulate sounds with filters, delays, and other FX.

Easy to use. Easy to get great tone.

+ Mod Wheel can morph between layers. Start with an Electric Piano, and slowly bring in Strings with your MIDI controller.

+ Creative and beautiful live performances.
+ Epic pads that will inspire you

Email us your music & bugs:

** This app does not sample any PCM-based synths, including Roland or Korg digital keyboards. Additionally, this app does not have any business relationship with Roland, Korg, or any other 80s/90s Digital Synth manufacturers.

*** All app sounds were created by pure analog and fm synthesis. We took these new sounds. Stacked them. Flipped them. And, processed the heck out of ’em. Resulting in a beautiful new sonic palette for you to enjoy.

What’s New

Version 1.8

Hello Everyone!
* This update makes the Stand-alone version more stable
* Small stability updates to AUv3 as well
* App updated for iOS 15. Note in AUv3: preset changing works fine in most hosts (AUM, Cubasis, etc). In early iOS 15 versions of GarageBand, sometimes the app needs to be loaded and restarted. Then preset changing will work. This may be fixed by the time you read this.

Hope you all stay creative and healthy.
Please take care of yourselves and your fellow musicians. :)

Ratings and Reviews

4.8 out of 5
1.7K Ratings

1.7K Ratings

creed85641 ,

What a blessing

I didn’t give this app a look because I think it was the price tag. Too low. I thought a good synth app would be starting around 10 bucks. So now that I have purchased Moog, GeoShred, basically all of Korg, Pure Acid, Streetlytron ‘63, and so many others, there are only really a select few that I use.
I always passed up Digital D1 while searching for my next synth.
It wasn’t until I started reading the reviews that I finally just said, “All right, I gotta check it out. “
I don’t regret not purchasing this earlier, but I’m like, “man, people need to know about this app.” So people, take it from me, you are going to be knocked off your feet when you listen to what this beautiful instrument can do. There are so many friggin presets that I haven’t gotten through them yet. The sound is phenomenal. You’ll just be so amazed. I wanted to write a review purely based on the character of this company and team members. I think you’ll know what I mean when you get this app. They are kind, generous (free preset downloads), and make you feel important, needed. So It’s a pleasure to help out where I can and write a review. You have given me more than I could ever ask for. Thank you team. And peeps, really, you NEED this in your synth buffet. You better do it. Haha. Go on now!

Thehlkffv ,


First off I’m a musician not a sound engineer for movies or anything for that matter. With 400+ presets, and not like some lame presets that you’ll get from other apps which all sounds very similar and the only way to get that sound you’re looking for is to spend hours tweaking it. I have to give major props to the guys at D1 for putting in the works to create such high quality and beautiful sounding presets, and only if I really have to tweak anything it will be very minimal. Of course D1 has all those fancy tweaking nobs but who has time for that when you’re in that moment where you just want to lay down a quick melody or chords. D1 layouts are truly amazing, very simple to use especially for a guy who doesn’t like nobbleing around and this doesn’t overwhelms me at all. I CAN NOT WAIT till they release the AU3 compatible version of this app. Awesome work guys! Keep music alive even though it’ll never die. BTW, I hate writing reviews as much as I hate tweaking sounds but for this app I just have to.

parentini ,

Incredible quality for an incredible price

This app is excellent in just about every way possible. Beautiful sound, great UI… very impressed by everything this company puts out. The only issue I’m running into with this app and others by this company is that it regularly crashes when connected to my MacBook Pro (M1) when midi is sent via Ableton to D1 while audio is also being output into Ableton. This is all happening via a single USB-C cable. It’s a pretty major issue for me, but I still love the app and I might have something wrong on my end so I don’t want that to be reflected in my star rating.

App Privacy

The developer, AudioKit Pro, 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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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