Comparison

MidiBus 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

MidiBus

Synchronize MIDI clock signals between apps and devices with adjustable BPM and time signatures. Monitor the accuracy and stability of MIDI clock sources, including the app itself. Discover surprising performance metrics from your connected gear.

Highlights
  • MIDI clock sync generation
  • Adjustable BPM and time signature
  • Multiple MIDI destinations
  • MIDI clock signal monitoring
  • Accuracy and stability measurement
  • iOS MIDI development library based
Features
Read full description

MidiBus is a MIDI clock sync generator and monitor. Choose your bpm, time signature and MIDI destinations. Press the play button and all selected apps and devices will receive a synchronised, rock-solid MIDI sync clock source. On the flipside, monitor the MIDI clock signals of apps and devices (including MidiBus itself) and measure how accurate and stable they really are. You might be very surprised at the results. MidiBus is based on the iOS MIDI development library of the same name. Full details at http://midib.us

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

MidiBus1 screens
NERD Synth A2x + AUv34 screens

Verdict

The call

The clearest difference is update cadence: NERD Synth A2x + AUv3 at fortnightly against MidiBus's every 5 months. NERD Synth A2x + AUv3 also leads on ratings volume (1.3K vs 2). MidiBus's advantage is price ($2.99 vs $5.99) and iOS requirement (5.1.1 vs 14.4). On rating, review sentiment, ads and in-app purchases 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

MidiBus costs $2.99 and NERD Synth A2x + AUv3 $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for MidiBus against 4.9 for NERD Synth A2x + AUv3. That said, the two scores are not equally well evidenced: NERD Synth A2x + AUv3 has 1.3K ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 94% of MidiBus's written reviews are positive against 90% of NERD Synth A2x + AUv3's.

UpkeepUpdate frequency

MidiBus ships an update every 5 months, NERD Synth A2x + AUv3 fortnightly. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
MidiBus versus NERD Synth A2x + AUv3: the parameters behind the verdict, then further details
ParameterMidiBusNERD Synth A2x + AUv3
Price$2.99 — better$5.99
Rating5.0 (2 ratings) — better4.9 (1.3K ratings)
Positive reviews93.8% of reviews — better90.4% of reviews
Number of ratings21.3K — better
Update frequencyEvery 5 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS5.1.1 — better14.4
Further details — not scored
Size2 MB242 MB
Age rating4+4+
DeveloperAudeonic AppsAudioKit Pro

Customer experience

MidiBus

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews16 reviews
Positive93.8%
Neutral0.0%
Negative6.3%

NERD Synth A2x + AUv3

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

Bugs and requests

MidiBus

Not enough reviews yet to summarise bugs or requests.

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

None

MidiBus

No in-app purchases

None

NERD Synth A2x + AUv3

No in-app purchases

Questions

Is MidiBus free?
MidiBus costs $2.99, with no 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, MidiBus or NERD Synth A2x + AUv3?
MidiBus is rated higher. MidiBus averages 5.0 out of 5 from 2 ratings, while NERD Synth A2x + AUv3 averages 4.9 from 1.3K ratings.
Do MidiBus or NERD Synth A2x + AUv3 have ads?
Neither MidiBus nor NERD Synth A2x + AUv3 shows ads.
Which is updated more often, MidiBus or NERD Synth A2x + AUv3?
MidiBus ships an update every 5 months, and NERD Synth A2x + AUv3 fortnightly. Most recently, MidiBus was updated on October 9, 2026 and NERD Synth A2x + AUv3 on October 16, 2026.

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