Comparison

AudioKit Digital D1 Synth vs Aparillo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AudioKit Digital D1 Synth

This app is a virtual analog and PCM synthesizer for iPad, inspired by the digital synthesizers of the 80s and 90s. It offers a vast library of presets, advanced synthesis features, and built-in effects for creating rich, retro-inspired sounds.

Highlights
  • 64-voice hybrid digital poly synthesis
  • 1GB+ of original samples
  • Stand-alone, IAA, and AUv3 support
  • Vintage-style arp/step sequencer
  • 3 LFOs with fun routings
  • Dual independent per-layer filters
  • Built-in FX suite
Read full description

Epic 64-voice Virtual Analog / PCM iPad Synth Inspired by the Digital Synths of the 80s and 90s - ** TOP 3 iOS MUSIC APPS OF 2018 *** - Music Radar Awards (Computer Music & Future Music Magazine) - * Featured By Apple in "New Apps We Love!" ** "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 DIGITAL D1 is AWESOME: - 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 ADDITIONAL FEATURES: - 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." REQUIREMENTS: 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. TROUBLESHOOTING: 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! - * NOMINATED: Best iOS Music Apps of 2018 ** by Computer Music & Future Music magazine. Subscribe to access to premium app features; subscription details are the following: - Length: weekly or yearly - Free trial: only on selected subscriptions - Your payment will be charged to your iTunes Account as soon as you confirm your purchase - You can manage your subscriptions and turn off auto-renewal from your Account Settings after the purchase - Your subscription will renew automatically, unless you turn off auto-renew at least 24 hours before the end of the current period - The cost of renewal will be charged to your account in the 24 hours prior to the end of the current period - When canceling a subscription, your subscription will stay active until the end of the period. Auto-renewal will be disabled, but the current subscription will not be refunded - Any unused portion of a free trial period, if offered, will be forfeited when purchasing a subscription Terms & Conditions: [https://magic-cake-e95.notion.site/AudioKit-Digital-D1-Synth-Terms-Conditions-14dcf6557a0880beb991f20561329664?pvs=4](https://www.notion.so/AudioKit-Digital-D1-Synth-Terms-Conditions-14dcf6557a0880beb991f20561329664?pvs=21) Privacy Policy: [https://magic-cake-e95.notion.site/AudioKit-Digital-D1-Synth-Privacy-Policy-14dcf6557a088042b2beee2382f5d62f?pvs=4](https://www.notion.so/AudioKit-Digital-D1-Synth-Privacy-Policy-14dcf6557a088042b2beee2382f5d62f?pvs=21) - * NOTE: This app has no official affiliation with AudioKit Pro, LLC. It was built using the free AudioKit source code.

About

Aparillo

This advanced FM synthesizer creates complex soundscapes, atmospheres, and a wide range of timbres for film, TV, and games. It features two interacting FM synths, integrated effects, and an intuitive 'Orbiter' for one-touch sound morphing. Seamlessly integrate with your mobile studio setup via MIDI and Audio Unit v3 support.

Highlights
  • 16-voice FM Synthesizer
  • Complex sound design
  • Integrated FX (Filter, Delay, Reverb, Spacializer)
  • Orbiter for sound morphing
  • Standalone & Audio Unit v3 support
  • MIDI and Ableton Link integration
  • iCloud Preset Sync
Read full description

The Cinematic Machine Aparillo is an advanced 16 voice FM synth tailored for complex sound structures , majestic motions, moving and evolving soundscapes and atmospheres that are perfect for film, TV or games. It‘s not limited to the conventional fm sounds but also delivers a huge range of styles from basses to brasses, pads to leads to even percussion. ••• SYNTH ••• It is based on two interacting FM Synthesizers capable of forming the most complex timbres. A clever arrangement of synthesis, wave shaping, filtering, FX and modulation unfolds into a serious sound design tool for epic sonic creation. Aparillo uses many parameters that can be modulated for individual adjustments PER voice. Each of the sixteen voices interact with almost two dozen targets in a variety of ways for a continuous transformation and to create endless rhythms and melodic progressions. ••• FX ••• The integrated effects include a free-signalflow Filter/Spacial Comb device, a polyphonic Auto Pan with multiple waveforms, the obligatory Delay, our finest Reverb algorithm, and a Sugar Bytes innovation, the Spacializer. This is a very special breed of delay based effect, which can work as a delay, reverb or tuned comb filter and can add room, plucked strings or even pinged percussion to your sound. ••• ORBITER ••• The superstar of Aparillo is the Orbiter, an instinctual "mass-controller" you move through Aparillo's endless sonic universes for one-touch sound morphing. That finally gives you unlimited control over new grounds of sound manipulation. Aparillo for iPad will seamlessly integrate with your mobile studio setup. We built in MIDI support (Virtual, Network, External, Bluetooth), Audio Unit v3 and Ableton Link. Syncing your presets to use them accross other devices couldn't be easier with iCloud. Enjoy Aparillo, the more you dig into it the more you fall in love with it! Features: • Standalone & Audio Unit v3 • FM Synthesizer with 16 Voices • Formant Shifting, Wave Folding & Shifting • Multi-Mode Filter with Spacializer • Orbiter for one-touch Sound Morphing • 500 handpicked Presets • Ableton Link Support • Full MIDI Support (Virtual, Network, External, Bluetooth), MIDI Learn & Host Automation • Preset iCloud Sync • Preset Share

Verdict

The call

The clearest difference is monetization model: Aparillo at free with in-app purchases against AudioKit Digital D1 Synth's subscription. Aparillo also leads on ads (none vs shown) and review sentiment (88% vs 76%). AudioKit Digital D1 Synth's advantage is update cadence (every 3 weeks vs every 4 months) and ratings volume (2K vs 506). On price, rating, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AudioKit Digital D1 Synth sells 6 in-app purchases, starting at $4.99 per 7 days and Aparillo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for AudioKit Digital D1 Synth against 4.9 for Aparillo. Both are backed by a comparable volume of ratings — 2K and 506 respectively. Written reviews are what separate them: 76% of AudioKit Digital D1 Synth's written reviews are positive against 88% of Aparillo's.

UpkeepUpdate frequency

AudioKit Digital D1 Synth ships an update every 3 weeks, Aparillo every 4 months. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

Scorecard6 real differences · 4 level
AudioKit Digital D1 Synth versus Aparillo: the parameters behind the verdict, then further details
ParameterAudioKit Digital D1 SynthAparillo
PriceFreeFree
Rating4.8 (2K ratings)4.9 (506 ratings) — better
Positive reviews76.0% of reviews88.5% of reviews — better
Number of ratings2K — better506
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPadiPad
Requires iOS13.0 — better17.6
Further details — not scored
Size636 MB51 MB
Age rating4+4+
DeveloperAudiobus Pty LtdSugar Bytes GmbH

Customer experience

AudioKit Digital D1 Synth

All ratings2,007 ratings
Positive95.4%
Neutral1.7%
Negative2.9%
Written reviews242 reviews
Positive76.0%
Neutral7.4%
Negative16.5%

Aparillo

All ratings506 ratings
Positive97.4%
Neutral1.2%
Negative1.4%
Written reviews113 reviews
Positive88.5%
Neutral6.2%
Negative5.3%

User reviews

AudioKit Digital D1 Synth

From 2K App Store ratings

What we love

  • 🎨 Excellent sound quality
  • 🎹 Versatile and inspiring presets
  • 👍 Intuitive and user-friendly interface
  • 💰 Great value for the price
  • 🔥 Cutting-edge digital synthesis

Room to improve

  • 🐛 Occasional crashes and stability issues
  • 🔋 High battery consumption
  • 🔒 Lack of Audio Unit (AUv3) support
  • 🤔 Some presets not easily usable
  • 🕰️ Slow loading times in certain DAWs

Aparillo

From 506 App Store ratings

What we love

  • 🚀 Powerful sound design capabilities
  • 👍 Intuitive and creative interface
  • 🎨 Cinematic and otherworldly sounds
  • 💡 Innovative orbit and spatial features
  • 🔥 Excellent presets and sound quality

Room to improve

  • 🐛 Occasional crashes and stability issues
  • 🔍 Lack of clear documentation and tutorials
  • 📱 UI not optimized for larger iPad screens
  • 💰 Paid upgrade required for full functionality

Bugs and requests

AudioKit Digital D1 Synth

Reported bugs

4 issues
  • Presets not loading correctly
  • MIDI note dropouts and latency
  • Crashes when used with certain DAWs
  • Compatibility issues with newer iOS versions

Requested features

5 requests
  • Add Audio Unit (AUv3) support
  • Improve MIDI integration and responsiveness
  • Implement a built-in recording/sampling feature
  • Expand preset library with more genres and styles
  • Add more sound design controls and modulation options

Aparillo

Reported bugs

2 issues
  • Saved patches not compatible across versions
  • Orbiter parameters not accessible on latest iOS

Requested features

4 requests
  • More preset packs and sound libraries
  • Improved MIDI and automation support
  • Custom tuning and scale options
  • Expanded keyboard and note range

In-app purchases

6 purchases

AudioKit Digital D1 Synth

Subscriptions4
  • Weekly premium$4.997 Days
  • Weekly premium7 Days trial$4.997 Days
  • Yearly premium7 Days trial$9.991 Year
Show 1 more
  • Yearly premium$9.991 Year
One-time2
  • D1 PCM Expansion-01Free
  • Platinum Expansion PCM EXP-01Free
1 purchases

Aparillo

One-time1
  • Aparillo Full Version$24.99

Questions

Is AudioKit Digital D1 Synth free?
AudioKit Digital D1 Synth is free to download, with in-app purchases available.
Is Aparillo free?
Aparillo is free to download, with in-app purchases available.
Which has better reviews, AudioKit Digital D1 Synth or Aparillo?
Aparillo is rated higher. AudioKit Digital D1 Synth averages 4.8 out of 5 from 2K ratings, while Aparillo averages 4.9 from 506 ratings.
Do AudioKit Digital D1 Synth or Aparillo have ads?
AudioKit Digital D1 Synth shows ads; Aparillo does not.
Which is updated more often, AudioKit Digital D1 Synth or Aparillo?
AudioKit Digital D1 Synth ships an update every 3 weeks, and Aparillo every 4 months. Most recently, AudioKit Digital D1 Synth was updated on September 22, 2026 and Aparillo on September 17, 2026.

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