modstep 4+


Designed for iPad

    • 2.8 • 39 Ratings
    • $9.99

iPad Screenshots



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”

“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.”

-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)

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

You can find the manual here:

What’s New

Version 1.3.2

This app has been updated by Apple to display the Apple Watch app icon.

- fixed a bug that could occur when loading defective AUv3 effects
- fixed a bug with sending and receiving MIDI Clock

Ratings and Reviews

2.8 out of 5
39 Ratings

39 Ratings

Robby Art ,

I’m so sad about MODSTEP😢😫😭

I LOVE Modstep. I’ve spent 2 years learning it and figuring out work arounds cause it seems it’s been abandoned. I still stood by it cause it’s just so good at sequencing, program changes, notes, ccs. Awesome for external gear and worked with AudioBus for routing to AUM. But now I can’t even load it! Please update so it can operate in os 14! All my projects are dead now... 😰😩

Even if it’s not auv3 it’s still the best sequencer imho.

legittristan ,

Modstep is live performance gold!!!

Modstep is such a great sequencer! It has by far the most functionality of any music production apps for iOS, but it does have a steep learning curve and a few quirks. While it’s definitely daunting for amateurs, it has just about everything a pro could want for live production and performance including extensive MIDI control and mapping.

A few minor tweaks that would make a lot of the Modstep community very happy are: 1) A MIDI CC option to launch the next/previous scene, instead of having to map each scene to a control. 2) A dedicated “undo” button since it’s very disruptive to workflow to have to load from the auto-saves. 3) Metronome volume adjustment and panning. 4) The ability to mute MIDI notes (not just channel audio) so that instrument loops can be brought in and out of the mix, in-time, and with effects (reverb tails, etc.). 5) Support for AU MIDI plug-ins... and though this is one of the most “mappable” MIDI apps out there, the ability to map even more stuff is always great. ;) Thoughts from the devs?

jVyvmzMs ,

Don't be fooled: do not buy!

While it is a nice app in theory, it annoys me about every time I try to use it. Even years after it's release, it is still full of of bugs and I do not believe any fixes are coming.

Some examples:

The other day, it took 5 or 6 times of restarting it before it actually loaded the project. I think it was the first time it took so many tries, but loading projects only after a few tries is a very regular occurrence.

When you select a specific MIDI-in device on a track, it still gets MIDI from all everywhere and you have to mute track you do not want played by the incoming MIDI. Even if nothing is armed and when the channel is a different one!

When you "save as", the currently selected track gets renamed to that name, too. That's especially annoying when you are using track names to reference which external sound the track should control.

And these are just what I encountered on my last tries of using the software.

I bought it pretty much as soon as it came out. At 20$ it was the most expensive app on my iPad, and never got to actually use it.

I did not want to give a bad review because, as I wrote at the top, it is a nice app in theory, but I feel tricked and I do not believe that it will ever get in a usable state for me because the creators do not seem to care about the bugs and the bad reviews they deservedly get.

Edit: Now trying to load AU synths crashes modstep and IAA synths do not produce any sound!

App Privacy

The developer, AppBC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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