Comparison

SynthMaster 2 vs NERD Synth A2x + AUv3

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

Head to head
About

SynthMaster 2

This powerful software synthesizer offers a vast array of sound design capabilities, including multiple oscillator modes, extensive modulation options, and a wide selection of filters. Explore over 1000 factory presets or create your own unique sounds. Available as a standalone app or AUv3 plugin.

Highlights
  • Multiple oscillator modes (Basic, Additive, Wavetable, Vector)
  • Extensive modulation architecture
  • 6 filter categories
  • Import custom wave files
  • 1000+ factory presets
  • Standalone app and AUv3 plugin
Read full description

KV331 Audio is proud to announce the availability of their award winning software synthesizer SynthMaster 2.9 on iOS platform. As being the first app developed using KV331 Audio’s new cross-platform UI framework, SynthMaster 2 runs as a standalone app or AUv3 plugin on iPads with iOS 11 and above. SynthMaster 2 supports native resolutions of various iPad devices. User interfaces are provided for 9.7, 11 and 12.9 inch iPads in 4 different skins (Blue, White, Dark, Proto). Separate interfaces are provided for the AudioUnit plugin as well. SynthMaster 2 comes with 1000 factory presets designed by world class sound designers such as BigTone, Nori Ubukata, NatLife and Yuli Yolo. Thanks to the comprehensive preset browsing features, users can easily filter presets by author name, bank name, instrument type or preset name and find the sounds that they are looking for. There’s also an IAP Shop, which lets users purchase additional sounds: 1. "Desktop Presets Upgrade": This IAP adds all factory presets in SynthMaster 2.9, increasing the total preset count to 2000. 2. "All Expansions Bundle": This IAP adds all current 38 SynthMaster preset expansion banks. Sound Engine: At the heart of SynthMaster 2’s powerful sound engine lies its oscillators, modulators, and filters. Oscillators: The oscillators can operate in 4 different modes to generate sound: 1. In Basic mode, the oscillator plays single cycle waveforms or samples. With the Oscillator Unison turned on, up to 8 voices per oscillator can be played. 2. In Additive mode, 8 Basic oscillators can be stacked up to create richer tones. 3. In Wavetable mode, the oscillator can play wavetables with up to 256 frames. 4. In Vector mode, 4 Basic oscillators are mixed in 2 dimensions. Modulators: Modulators are simply basic oscillators that can be added to other oscillators or modulate other oscillators’ or modulators’ phases. By connecting modulators to other oscillators or modulators, complex FM tones can be synthesized. Importing Wave Files into SynthMaster: While designing sounds, users can easily import wave files into SynthMaster 2. SynthMaster 2 can categorize those files into waveforms, wavetables or multi samples and import them accordingly. Filters: Once the sound is generated by the oscillators it goes through SynthMaster’s filters, which can operate in 6 different categories: Digital, VAnalog, Ladder, Diode Ladder, State Variable and Bite. Custom distortion can be applied before or after the filters as well. Modulation Architecture: SynthMaster 2 features a comprehensive modulation architecture with a wide range of modulation sources: 1. MIDI controls 2. Macros controls 3. 4 ADSR envelopes per layer 4. 4 Multisegmented envelopes per payer 5. 4 LFOs per layer 6. 4 Sequencers per layer 7. 4 Keyscalers per layer There’s real-time visual feedback that lets users see how modulation sources and targets are changing when a note is being played. This is extremely helpful when designing sounds with SynthMaster 2. New modulations can be created easily by dragging and dropping a modulation source onto a knob or slider control. Users can easily see which controls are modulated by a modulation source by clicking on that source. Controls that are being modulated by that source will display modulation amounts. By long pressing a control, the modulation amount can be edited without the need to go through the mod matrix. Arp/Sequencer: SynthMaster features a comprehensive arpeggiator / sequencer with 32 steps. Users can easily create sequences by recording steps one by one. Effects: Each of the 2 layers in SynthMaster has 5 insert effect slots. 13 different types of effects can be instantiated in any of those slots. There are also 2 global effect send busses which can be used to create more complex effect routings.

About

NERD Synth A2x + AUv3

This virtual analog synthesizer offers a powerful and intuitive sound design experience, inspired by classic hardware. Explore over 40 classic waveforms, a versatile arpeggiator, step sequencer, and lush effects to craft unique electronic music.

Highlights
  • Virtual Analog Synthesizer
  • 40+ Classic Waveforms
  • Arpeggiator
  • Step Sequencer
  • Lush Effects Suite
  • Four-voice Unison
  • AUv3 Plugin Support
Features
Read full description

Inspired by the classic sounds of the Nord Lead A1** This is not a Rompler. This is a SYNTH.  "I’m impressed. The sounds are FAT, the effects are LUSH, and the interface is a JOY to use."  – Audio News Room "This is not a clone, this is BEYOND the hardware, it's a completely new, fantastic beast" – Jade Starr, How to App "An excellent release...app captures the soul of the Nord Lead A1 Synthesizer"  – Synth Anatomy "An iOS-based homage to a virtual analogue classic!" – Music Radar / Keyboard Magazine Not imitation, it's Innovation! https://audiokitpro.com/redsynth With Nerd Synth, you’ll have access to all 40+ of the classic lead A1 waveforms! Plus, we gave it some RAW MODERN POWER. FULLY LOADED w/ 550+ presets by Analog Matthew, Electronisounds, DMT Cymatics, Moby Pixel, Red Sky Lullaby, and more NOTE: This is a synth, and contains no hardware preset samples. All presets are completely original. One low price includes Lifetime License and all Features Easy to use. Easy to get great tone! NERD SYNTH A2X: • 64-voice, Retro VA-Synth • Include all 40+ of the Nord A1 waveforms • Arpeggiator! Classic Hardware-style Arp, with extra features • Vintage-style Step Sequencer that can be routed to specific layers • A proper filter envelope ADSR! • NEW: 2x Oversampled Oscillators • 3 LFOs. Fun Routings. LFOs can modify other LFOs • Microtonality, World Scales and Western Scales! • TouchPads! 2 fun assignable pads, -= Create NORD-style SUPER SAWS =- ++ Four-voice Unison with the tap of a button ++ 3 different algorithms: Regular, HYPER, and BEAST! "Astoundingly great sounding and intuitive synth app!" – The GarageBand Guide Modeled sound: It's like a time-capsule. Imagine if there were iPads in 2003? Complete with that "cold" VA sound that ruled the dance floors and stages ADDITIONAL FEATURES: • FX: Glorious Reverb, Analog Tape Delay, Distortion, Flanger, Chorus, Crush, and more. • On board "Record" button, no external hardware required • Works with a MIDI Keyboard EXCLUSIVE TO THIS APP: • "SUPER FM" wild pitch drop controls! Modeled after digital VA-Synths, complete with vintage digital aliasing for old-school vibe! • Crazy aggressive RING MODULATION distortion – It's like robots talking, or fighting? You decide! COOL: • iPad version has "stacked" views for maximum onscreen control! Tap the current Nav Button at the top to change the bottom view • This is a Premium App: No iAP, No Ads, No subscriptions! Use as a plug-in in DAWs like GarageBand & Logic for iPad, Cubasis, AUM, and more! NOTE: This is not a hardware clone, it's a completely new synth. If you're looking for a ROMpler like the "Stage" series, this app may not be for you. This is a SYNTH, not a rompler. All the presets here are new and original. Giving you fresh new sounds that are completely tweak-able This is not a 1:1 clone and will not load hardware presets. Please note that this app's sound is closer to the A1, which is a different sound from the NL1/NL2X. ** This app has no affiliation or endorsement by Clavia DMI AB. This app is not a clone of any their synths, including the Nord Lead and Nord Lead A1. While we were inspired by their wonderful and iconic work, this app is not trying to copy those synths. We created something completely new. It's a synth for synth nerds :) LEGAL STUFF: All product names and images, trademarks and artists names are the property of their respective owners, which are in no way associated or affiliated with the creators of this app, including AudioKit, AudioKit Pro, LLC, and the other contributors. Any use of these names and images does not imply any cooperation or endorsement by Clavia Digital Musical Instruments. Nord Lead, Nord Lead 2X, Nord, and Nord Lead A1 are Clavia trademarks and properties. We appreciate their amazing work in creating such classic and inspiring instruments.

Screenshots

NERD Synth A2x + AUv34 screens

Verdict

The call

The clearest difference is price: NERD Synth A2x + AUv3 at $5.99 against SynthMaster 2's $14.99. NERD Synth A2x + AUv3 also leads on in-app purchases (none vs 32) and ads (none vs shown). On rating, ratings volume, update cadence and iOS requirement 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

SynthMaster 2 costs $14.99 and NERD Synth A2x + AUv3 $5.99 up front. SynthMaster 2 sells 32 one-off in-app purchases. NERD Synth A2x + AUv3 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for SynthMaster 2 against 4.9 for NERD Synth A2x + AUv3. Both are backed by a comparable volume of ratings — 451 and 1.3K respectively. Written reviews are what separate them: 68% of SynthMaster 2's written reviews are positive against 90% of NERD Synth A2x + AUv3's.

UpkeepUpdate frequency

SynthMaster 2 ships an update every 3 weeks, NERD Synth A2x + AUv3 fortnightly. Both last shipped on September 23, 2026.

Scorecard6 real differences · 4 level
SynthMaster 2 versus NERD Synth A2x + AUv3: the parameters behind the verdict, then further details
ParameterSynthMaster 2NERD Synth A2x + AUv3
Price$14.99$5.99 — better
Rating4.8 (451 ratings)4.9 (1.3K ratings) — better
Positive reviews68.5% of reviews90.4% of reviews — better
Number of ratings4511.3K — better
Update frequencyEvery 3 weeksFortnightly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS1514.4 — better
Further details — not scored
Size918 MB242 MB
Age rating4+4+
DeveloperKV331 AudioAudioKit Pro

Customer experience

SynthMaster 2

All ratings407 ratings
Positive94.3%
Neutral2.2%
Negative3.4%
Written reviews111 reviews
Positive68.5%
Neutral16.2%
Negative15.3%

NERD Synth A2x + AUv3

All ratings1,342 ratings
Positive99.1%
Neutral0.6%
Negative0.3%
Written reviews146 reviews
Positive90.4%
Neutral6.8%
Negative2.7%

User reviews

SynthMaster 2

From 451 App Store ratings

What we love

  • 🚀 Best synth on iPad
  • 👍 Delicious sound
  • 👍 Tremendously powerful synth
  • 👍 Great synth with complex possibilities and great sound(s)
  • 👍 Perfeito

Room to improve

  • 🐛 Auswahl der Modulationsquellen funktioniert nicht richtig
  • 🐛 Echt schlecht
  • 🐛 Broken Preset System for a powerful synth
  • 🐛 Please fix the OSC behavior on Square and Saw
  • 🐛 Preset issues

NERD Synth A2x + AUv3

From 1.3K App Store ratings

What we love

  • ⭐ Outstanding synth
  • 👍 Very nice and rich sounding
  • 🎨 Great presets and sound design
  • 🔧 Easy to use and intuitive
  • 💻 Works well in AUv3 environments

Room to improve

  • 🐛 Doesn't show up in Logic
  • 🔧 Needs to be more Mac-compatible
  • 🔧 Changing presets can be sluggish
  • 🔧 Missing aftertouch/expression support

Bugs and requests

SynthMaster 2

Reported bugs

4 issues
  • Presets not loading correctly
  • Modulation not working after loading project
  • Skin resets to default
  • App crashes frequently

Requested features

2 requests
  • Pitch bend/glide for imported samples
  • Integration with AUM audio mixer

NERD Synth A2x + AUv3

Reported bugs

2 issues
  • Doesn't fit properly in Logic Pro for iPad
  • Keyboard keys get stuck when using a controller

Requested features

4 requests
  • Dark mode option
  • Undo/redo functionality
  • Improved Logic Pro integration
  • Ability to change color scheme

In-app purchases

32 purchases

SynthMaster 2

One-time32
  • BigTone Tableworks Vol.2$1.99
  • Burak Yeter Synth Sounds Vol1$1.99
  • Aiyn Zahev Expansion 1$1.99
Show 29 more
  • BigTone Tableworks Vol.1$1.99
  • Michael Kastrup Expansion$1.99
  • EDM Stars Volume 1$1.99
  • Nori Ubukata Pop Hits Vol.4$1.99
  • Rob Lee EDM Expansion Vol.2$1.99
  • Alonso Sound Future Rave$1.99
  • Nori Ubukata Pop Hits Vol.1$1.99
  • BigTone Techno Bits Vol.1$1.99
  • Club Sequences Vol.1$2.99
  • Historical Synth Giants Vol.3$2.99
  • Dawn of Electronic Music Vol.2$2.99
  • Nori Ubukata Art Rock Basics$2.99
  • BigTone Analog Basics 02$4.99
  • BigTone Analog Basics$4.99
  • BigTone Signature Sounds Vol.1$4.99
  • NU Sounds of the World$4.99
  • Historical Synth Giants Vol.4$4.99
  • Historical Synth Giants Vol.1$4.99
  • Historical Synth Giants Vol.2$4.99
  • Japan Vintage$4.99
  • NatLife Future Bass Sounds$4.99
  • Danyella EDM Expansion Vol.1$4.99
  • Dawn of Electronic Music Vol.1$4.99
  • Dawn of Electronic Music Vol.3$4.99
  • Rob Lee EDM Expansion Vol.3$4.99
  • Natlife Disco Funk$4.99
  • Insigne Essentials 4 Clubbin$4.99
  • Desktop Presets Upgrade$9.99
  • All Expansions Bundle$49.99
None

NERD Synth A2x + AUv3

No in-app purchases

Questions

Is SynthMaster 2 free?
SynthMaster 2 costs $14.99, and also offers in-app purchases.
Is NERD Synth A2x + AUv3 free?
NERD Synth A2x + AUv3 costs $5.99, with no in-app purchases.
Which has better reviews, SynthMaster 2 or NERD Synth A2x + AUv3?
NERD Synth A2x + AUv3 is rated higher. SynthMaster 2 averages 4.8 out of 5 from 451 ratings, while NERD Synth A2x + AUv3 averages 4.9 from 1.3K ratings.
Do SynthMaster 2 or NERD Synth A2x + AUv3 have ads?
SynthMaster 2 shows ads; NERD Synth A2x + AUv3 does not.
Which is updated more often, SynthMaster 2 or NERD Synth A2x + AUv3?
SynthMaster 2 ships an update every 3 weeks, and NERD Synth A2x + AUv3 fortnightly. Most recently, SynthMaster 2 was updated on September 23, 2026 and NERD Synth A2x + AUv3 on September 23, 2026.

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