Atom | Piano Roll 2

Atom | Piano Roll 2

Sequencer and clip launcher

96 ratings
80 reviews
$19.99

Details

  • Released
  • Updated
  • March 15, 2021
  • May 29, 2021

Features

Atom | Piano Roll 2 screenshot #1 for iPhone
Atom | Piano Roll 2 screenshot #2 for iPhone
Atom | Piano Roll 2 screenshot #3 for iPhone
iphone
ipad
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About

This advanced AUv3 MIDI editor and sequencer allows for complex musical composition and live performance. It functions as a plugin within compatible music hosts, enabling users to create intricate patterns, launch clips, and customize workflows with scripting.

AUv3 MIDI note editor
Modular sequencer
Clip launcher
Step input and real-time recording
Customizable layouts and themes
Scripting for custom workflows
Ghost lanes for harmonies and counterpoint
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What users say

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What's New in Atom | Piano Roll 2

2.0.10

May 29, 2021

- Infinite undo. Edit fearlessly. - Improved channel targeting: long pressing a channel’s show/lock buttons will now toggle them exclusively, for easier channel switching. - Improved interplay between user configurations and custom styles: now always using larger fonts when the selected configuration demands them. Configurations (such as Larger Controls and Sausage Fingers) support an "includedStyle" field which always applies the specified stylesheet. In effect, you can now use "Larger Controls" with "Larger Fonts" in combination with "MIDI Channel Colors". - Added a "MIDI Note Data" example style that shows all note info, including the note’s octave, value, velocity etc. Note: When iOS notifies Atom of system-wide memory pressure, very old undo/redo history will be discarded.

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Charts

Top Paid

📊 181

Music

The app has maintained its position at 181 recently.

Last updated on July 20, 2026.

User reviews

Midi CC editing ??

It’s a decent app for what it does… however, it advertises itself as a, ‘Swiss army knife of midi’… It isn’t when you can’t edit basic midi CC data. This has been asked for a years it turns out and it looks like it’s been ignored by the developer. I’ll think twice before buying another from this developer.
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Notes get corrupted easily

Not sure if this is an iOS 18 thing or not, but on my iPad I’m noting that even with very simple patterns, notes seem to get corrupted and when playing back don’t match what I have drawn on the grid. Kind of kills the whole value of this app for me.

Great Plugin

The UI is kind of tiny, but it's understandable because it's crammed with features.

The App Store on my M1 Mac says it is compatible with MacBook Pro, and it installs, but it's not really available in any useful way. It doesn't show up in the AU list.

Perhaps the app's listing could remove MBP compatibility from the page.
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Sad, and sorry for being a bit honest and truthful

This app is soon gonna lost into the oblivion, Soon! My condolences. Just out of respect I’m giving 2 stars.
Update:

Due to the sheer negligence of the developers, and the fact that they don’t care or absolutely not bothered by the fact that a huge number of people have spent their money, which was earned by working hard and was earned through their sweat.

This is simply an act of disrespect and utter insult to the people who put their trust on this dev. Which he certainly absolutely do not deserve.

If you’re going to do something, do it with integrity and dignity, if you’re not gonna work on this app, give it to someone else, there are a huge number of developers iOS can do wonders nowadays.

But you’re not going to do that simply because you simply do not care and albeit an irresponsible developer.

Anyway, congratulations on your success of lowering down the standard of the AppStore,

Similar apps like Xequence, Helium, Fl Studios Piano Roll, have surpassed this already. Doesn’t even support drag and drop from Suggester , can you believe it? Let’s not go into the glitch details.

Stay well, and be blessed.
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Logic Pro iPad….

Integration would be nice….
Pretty sure this shark is dead in the water by now.

Developer apps

User experience

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Reported Bugs

13 issues

Crashes when saving sessions in AUM

Bug

Notes get corrupted during playback

Bug

White background display issue

Bug

Position indicator jumps when loop doesn't start at bar 1

Bug

Buttons for adding bars disappear after certain point

Bug

MIDI input processed incorrectly even in passthrough mode

Bug

Notes don't play after being added to piano roll

Bug

App doesn't appear in AU list on MacBook Pro

Bug

Launchpad Pro MK3 session clip launch mode not working

Bug

iOS 12 compatibility crashes

Bug

Incompatibility with Cubasis 3 and GarageBand

Bug

Responsiveness issues with Apple Pencil (resolved in updates)

Bug

GUI rendering problems on some iPad models

Bug

Requested Features

17 requests

MIDI CC editing and visualization

Feature

Mouse and trackpad input support

Feature

Logic Pro for iPad support

Feature

Chord entry in step input mode

Feature

Velocity editing improvements and visual feedback

Feature

Dark mode option

Feature

Drag and drop from Suggester

Feature

Time stretch/MIDI stretch functionality

Feature

Standalone mode without requiring AUM

Feature

Launchpad Pro MK3 full compatibility

Feature

Grid-style interface similar to Launchpad

Feature

Step input for multiple notes simultaneously

Feature

Better zoom and selection for longer patterns

Feature

Undo last recording feature

Feature

Parameter automation curves

Feature

Easier MIDI channel switching

Feature

Tutorials and documentation

Feature

FAQ

What does Atom | Piano Roll 2 do?

Atom | Piano Roll 2 is an advanced AUv3 MIDI note editor, modular sequencer, and clip launcher for iOS. It allows users to create complex musical patterns, build live sets for clip launching, and compose entire tracks with unlimited length. It functions as a plugin within compatible music hosts.

What are the key features of this app?

Key features include an AUv3 MIDI note editor, a modular sequencer, and a clip launcher. It supports step input and real-time recording with perfect timing accuracy. Users can also customize layouts and themes, write code for custom workflows, and utilize ghost lanes for harmonies and counterpoint.

How much does Atom | Piano Roll 2 cost?

Atom | Piano Roll 2 is a paid application. The provided data indicates it was a #1 paid music app, suggesting a one-time purchase model without ongoing subscriptions or free-to-play mechanics.

What devices and software is this app compatible with?

This app requires a compatible host application to run, as it does not function as a standalone app. It has special integration with AUM and Drambo, and has been tested with hosts like ApeMatrix, Audiobus, BeatMaker, Cubasis, MTS, and Zenbeats. Limited support is available for NanoStudio 2, and it is not supported by GarageBand.

What are some common use cases for Atom | Piano Roll 2?

Common use cases include building live sets for clip launching, composing patterns with touch or step input, capturing performances, importing and editing MIDI files, and sequencing other sequencers for complex modular setups. It's also useful for writing harmonies, counterpoint melodies, and constructing complex polyrhythms.