Comparison

modstep 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

modstep

Create music with a powerful MIDI sequencer for iPad. Control external hardware, IAA apps, and Audio Units. Features unlimited tracks, real-time editing, and integrated synths/samplers for on-the-go or studio production.

Highlights
  • Session-style MIDI sequencer
  • Unlimited tracks and scenes
  • Real-time editing and modulation
  • Integrated synth and sampler
  • IAA and Audio Unit integration
  • Ableton Link sync
  • MIDI and Audio export
Features
Read full description

Modstep Introducing Modstep, Modulation Monster and the first full-blown MIDI sequencer for the iPad. Modstep allows you to create music and jam with your iPad and your favorite IAA Apps, Audio Units, Mac and PC software and MIDI hardware as well as the internal drum sampler and synth. Use it as the centerpiece of your setup to create and perform music on the go, in the studio and on stage. "If you´re looking for a versatile, adaptable MIDI sequencer for iOS, Modstep comes highly recommended" Sound On Sound “Modstep could change how an iPad fits into your music making” CDM “If you’ve ever dreamed of a touchscreen brain for your studio, this is it.” FACTMag "Modstep is a great step forward for step sequencing.” Audionewsroom FEATURES: -Session-style MIDI sequencer with unlimited tracks & scenes. -Play individual clips or whole scenes, or use the included arrangement features to manage more sophisticated song-structures. -Clips are pattern based which allows quick edits on the fly. Set a variable speed per pattern. -Edit clips with either the Step Sequencer or the Piano Roll -Step Sequencer with active steps and step-shifting. -Piano Roll with variable quantization including triplets, access to modulations, velocities and scales. -Everything can be edited, arranged, modulated or changed in real-time. -Note Repeat from 1-48th to 1/4th. -Global Swing -Unlimited MIDI & Audio tracks - only restricted by the power of your iPad. -Tempo range from 20 to 999bpm. -Sync via Ableton Link. -Stable and low-latency MIDI Clock In & Out with latency adjustment. -Trigger out -integrated global keyboard with scales & drum-pads allow quick recording of individual tracks with a single surface. -Use an external controller or keyboard to control, record or play any given track. -Midi mappable via external MIDI controllers -Internal additive synth with up to 64 harmonics per voice, 3-band eq, delay, reverb, lfo and detune. -Internal sampler with pitch, volume, reverse, fx per slot, 3 band-eq, delay and reverb. -Integrate any IAA compatible app or Audio Unit as an instrument or effect. -unlimited number of effects per track. -Audiobus support. -convenient plugin management via drag and drop. -Integrated mixer with Arm, Mute, Solo per track -Any loaded instrument or external MIDI hardware is completely modulatable via CCs. -Up to 128 CC modulations per track. -Audio and MIDI streaming directly via charger cable to Mac and PC using studiomux technology -Export sample perfect loops of audio per track. Choose which channels to record. The internal quantization will make sure they are sample-perfect and ready for any DAW. -Import / Export of MIDI files. -Import / Export of Audio & MIDI files via AudioShare. -A sophisticated template system allows quick setup of tracks to control external MIDI hardware, apps or plugins. -Includes many preconfigured templates for popular external hardware. -Template editor to create your own templates for IAA Apps, desktop Apps and external MIDI devices -Supports all MIDI interfaces for the iPad -Works on all iPads (iPad 1 restricted to MIDI only) Requirements: iOS 8 or later for audio and MIDI streaming to a Mac or PC, the studiomux server software is required: get the latest for free at studiomux.net Manual: You can find the manual here: http://www.modstep.net/manual

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 review sentiment: NERD Synth A2x + AUv3 at 89% against modstep's 46%. NERD Synth A2x + AUv3 also leads on rating (4.9 vs 2.8) and ratings volume (1.4K vs 39). modstep's advantage is iOS requirement (7.0 vs 14.4). On update cadence, ads, in-app purchases and monetization model 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

modstep costs $9.99 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

NERD Synth A2x + AUv3 holds the better App Store score, 4.9 against 2.8. That said, the two scores are not equally well evidenced: NERD Synth A2x + AUv3 has 1.4K ratings behind it against 39, so its average is the more settled of the two. Written reviews point the same way: 46% of modstep's written reviews are positive against 89% of NERD Synth A2x + AUv3's.

UpkeepUpdate frequency

modstep ships an update every 3 weeks, NERD Synth A2x + AUv3 fortnightly. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.

Scorecard6 real differences · 4 level
modstep versus NERD Synth A2x + AUv3: the parameters behind the verdict, then further details
ParametermodstepNERD Synth A2x + AUv3
Price$9.99$5.99 — better
Rating2.8 (39 ratings)4.9 (1.4K ratings) — better
Positive reviews45.8% of reviews89.0% of reviews — better
Number of ratings391.4K — better
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS7.0 — better14.4
Further details — not scored
Size99 MB242 MB
Age rating4+4+
DeveloperChristian BlomertAudioKit Pro

Customer experience

modstep

All ratings39 ratings
Positive41.0%
Neutral5.1%
Negative53.8%
Written reviews155 reviews
Positive45.8%
Neutral14.2%
Negative40.0%

NERD Synth A2x + AUv3

All ratings1,342 ratings
Positive99.1%
Neutral0.6%
Negative0.3%
Written reviews163 reviews
Positive89.0%
Neutral7.4%
Negative3.7%

User reviews

modstep

From 39 App Store ratings

What we love

  • 🎛️ Powerful MIDI sequencing capabilities
  • 🎨 Clean and polished user interface design
  • 🔗 Excellent integration with external hardware and IAA/AU apps
  • 🎵 Ableton Live-like clip launching workflow
  • 🎚️ Extensive automation and CC control options

Room to improve

  • 🐛 Frequent crashes and stability issues
  • ⏸️ App appears abandoned with no recent updates
  • 🔌 IAA/AU instrument loading causes crashes
  • 📖 Poor documentation and lack of tutorials
  • 🎚️ Confusing and unintuitive user interface

NERD Synth A2x + AUv3

From 1.4K 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

modstep

Reported bugs

18 issues
  • App crashes when loading external IAA/AU instruments
  • Constant clicking sound with metronome off
  • Projects fail to load or require multiple restart attempts
  • MIDI input routing ignores channel settings
  • Track names change when using 'save as' function
Show 13 more
  • App crashes when adding second synth to project
  • Black screen on startup
  • Crashes when editing notes in pattern editor
  • MIDI note hanging and stuck notes
  • Random crashes during playback or editing
  • Instruments deleted after app crash
  • Inter-app audio broken on newer iOS versions
  • App crashes when deleting tracks
  • Editing while playing causes crashes
  • Clip deletion causes crashes
  • IAA apps lock in slots
  • Screen goes blank during operation
  • Skipped notes and misfired triggers

Requested features

18 requests
  • Undo/redo functionality
  • MIDI import capability
  • Pre-roll for recording
  • Dedicated mixer with send/returns
  • Audio loop recording and playback
Show 13 more
  • State saving for synth presets
  • Bank MSB/LSB support for program changes
  • Precise CC automation entry
  • Song mode for arrangement
  • MIDI CC scene launching
  • Metronome volume and pan control
  • Note selection tool in piano roll
  • Groove templates
  • Better transposition tools
  • Pan control for instruments
  • Reset function for faders and values
  • AU MIDI plugin support
  • Sample upload over IP

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

modstep

No in-app purchases

None

NERD Synth A2x + AUv3

No in-app purchases

Questions

Is modstep free?
modstep costs $9.99, 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, modstep or NERD Synth A2x + AUv3?
NERD Synth A2x + AUv3 is rated higher. modstep averages 2.8 out of 5 from 39 ratings, while NERD Synth A2x + AUv3 averages 4.9 from 1.4K ratings.
Do modstep or NERD Synth A2x + AUv3 have ads?
Neither modstep nor NERD Synth A2x + AUv3 shows ads.
Which is updated more often, modstep or NERD Synth A2x + AUv3?
modstep ships an update every 3 weeks, and NERD Synth A2x + AUv3 fortnightly. Most recently, modstep was updated on November 5, 2026 and NERD Synth A2x + AUv3 on November 8, 2026.

Other comparisons