Filtatron 4+

Moog Music Inc.

    • 4.3 • 59 Ratings
    • $4.99



Filtatron is a realtime audio filter and effects engine.

Use sound from sound sources:
- Line/microphone input
- Sampler
- Built-in oscillator

Import any song on your iDevice into the Sampler.

Run a sound through a virtual version of the famous Moog filter with a little (or a lot) of filter modulation, delay, and overdrive to create your own musical statement.

Multi-touch X-Y pads provide highly tweakable performance control for live use.

NEW: Switch Pad to "Pitch Lock" mode to play chromatic scales.


OSCILLATOR – A high-resolution, alias-free DSP oscillator with sawtooth and square waveforms, adjustable frequency from 0.3 Hz to 2kHz.

FX MODULES – Amp provides warm, smooth overdrive with feedback control. Delay can be modulated by its own LFO (with rate and depth controls) and delay time is smoothly interpolated for analog-style delay time tweaks.

LFO – Five waveforms: sine, ramp, sawtooth, square, sample & hold, with crossfade and morph between adjacent LFO shapes.

ENVELOPE FOLLOWER – Uses the volume envelope of sound inputs to sweep the filter, with controls for amount and speed.

PRESETS - Filtatron comes loaded with edgy presets to kick-start your sound.

RECORD AND PLAYBACK – All audio processed in stereo, 16bit, 44.1kHz resolution. Filtatron will record samples up to 10MB.

FILE SHARING – Easily move audio files back and forth between the Filtatron and your computer. Built-in email function allows sharing presets with your Filtatron bandmates. Samples can also directly be shared on SoundCloud.

MIDI MAPPING - Almost every parameter can be controlled over MIDI. Use hardware controllers or external sequencers to control Filtatron remotely. Check the MIDI menu on the 'About' page.

Life’s a rough mix, filter it!

About Moog Music:

Moog Music and its customers carry on the legacy of Bob Moog, the inventor of the Moog synthesizer. Moog designs and manufactures electronic musical instruments, including our two newest synths the Slim Phatty and the Minimoog® Voyager® XL. We also make the revolutionary new Moog Guitar, the Little Phatty®, Moogerfooger® analog effects modules, Etherwave® Theremins, and the incredible Taurus Bass Pedals. Founded by Bob Moog, Moog Music designs and manufactures its products in Asheville, N.C.

What’s New

Version 1.4.10

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

• Added support for Ableton Link tempo sync.
• Added support for iPhone X.
• Updated Audiobus library to latest version.

Ratings and Reviews

4.3 out of 5
59 Ratings

59 Ratings

gbushta ,

I love the Filtatron app

I have used this app since it first came out. I love the way I can fiddle with the knobs to create some really cool sounds. Some of the sounds are hauntingly eerie while others are spatially ethereal.
I was saddened when I found that this app no longer works on my iPhone 14 Pro Max. It gets a lot of feedback from the microphone. I haven’t tried it with earbuds or headphones, yet. That would take away the sharing of the sounds. I can still use my old iPhone 7 or the newish iPad.
I used to have an iRig to plug in my guitar and filter it through Filtatron on my iPhone 4. You could make some really interesting sounds with that combination.
Every so often I launch this app for a little while to bring some sense of order to the chaos going on around me. Perhaps that is an illusion as I use it as a fidget toy.

Christian-stone ,

Still love it

Yes like others I got this way back when. Yes it’s still an awesome tool and has a lot of ability to make otherworldly sounds from my silly little iPhone. I do wish I could plug in a midi keyboard to control the loops like Animoog, but the real use here is of course with the x-y pads.

Strizbiz ,

Needs to be an Audio Unit now

Im a lifelong Moog fan, so many classics songs were created using Moog synths and hardware and I’m a fan of all their iOS apps, this and Animoog were insta buys and I loved them, but at the time au didn’t exist on the IPad, but now it does and its time to bring both up to the present iOS music state. I use Model 15 and Model D all the time and would love to bring Animoog Filtatron back into my workflow back into my workflow, especially Animoog but it’s not going to happen until they get updated to auv3 support. I’d give this 5 stars if it were an au.

App Privacy

The developer, Moog Music Inc., has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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