Mellotron XL

Mellotron XL

Sounds from the original tapes

26 ratings
64 reviews

Archived App (Last seen on 28 Apr 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • November 6, 2013
  • January 3, 2020
Mellotron XL video #1 for iPhone
Mellotron XL video #2 for iPhone
Mellotron XL screenshot #3 for iPhone
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About

Experience the iconic sounds of the original Mellotron and Chamberlin tape instruments. This app offers 18 authentic sounds, emulations of various models, and built-in reverb. It's a digital recreation of a legendary instrument used in countless hit songs.

18 original Mellotron & Chamberlin sounds
Model characteristic emulations
Built-in reverb effect
Core Midi support
Audiobus output & input support
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What's New in Mellotron XL

2.0.3

January 3, 2020

Will still play audio when device is in silent mode Minor graphic bug fixes (2.0) Fix for crashing app New improved graphics Amount of characteristics Reverb unit Core midi support) Double tap knobs to reset

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User reviews

Hard to Access

Could you make the next update more accessible to screen readers like VoiceOver?

Flawed

I would love to buy a ‘hardware’ Mellotron, but despite their seemingly quite modest specs and abilities, the digital versions are *way* out of my league, price-wise. Thought I’d try this just to access some classic sounds, in any case, and attempt some simple monophonic lines for a couple of songs.

Some lovely sounds are included, anyway - but getting them cleanly off my iPhone (no headphone jack…) meant buying a Bluetooth speaker with an ‘Aux’ out (fiddly, expensive). The Mellotron app, however, proved almost impossible to play on a phone, however… unless you were content with single-note drones. You *can* ‘concertina’ the graphic keyboard to around an octave-and-a-half (but why no documentation describing this feature..? It took me weeks to work it out…), though it’s still hell to ‘play’. Trying to access the sounds via Midi (using Audiobus and Sidecar) did work - eventually - but introduced a loud ‘click’ on the attack to each note rendering the sounds unusable (there was already a marked ‘lag’, even using the screen interface to trigger sounds…).

In all, I spent many hours (and over £100, in ‘support’ apps and additional bits of hardware) just trying to record a ‘real’ Mellotron tune on to a song… before giving up and just recording an actual flute part instead. So much for convenience.

So… the sounds are in there, but you’ll never find any serious application for them, sadly… and unless you’re thoroughly minted, you’ll never be able to be able to afford the (presumably far superior..?) hardware equivalent. Such a shame, and such a wasted opportunity. I love Mellotrons… but this could easily make me go off them…
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Beautiful sounds, currently weird MIDI behavior

I love the sounds this app has to offer. I’ve tried controlling it with MIDI for the first time, though, and every note has an unpleasant click when I press and release a key. I’m not sure what’s causing this. MIDI is coming from an Elektron Digitakt, and the only workaround I’m finding is lowering the trigger velocity almost to zero. This is not ideal as the notes play back very quietly, and the clicks still occasionally appear.
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Need to control volume via MIDI CC!

Love this app and integrated with my midi keyboard but I want to map the volume knob to an expression pedal. It’s of that pitch knob is mapped to the right place automatically but not volume. It’s neither mapped to midi cc 7 or cc11. It seems the volume isn’t mapped and can’t be mapped to any midi cc. Adding this feature would allow me to use this…
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Midi isn’t working.

Midi isn’t working, shows up in Audiobus and AUM but doesn’t trigger. The update history says midi support was added. I feel misled. Sounds are beautiful though, shame it appears the only way I can use them is to manually sample them. Can’t even use software to due that without midi working.

Developer apps

FAQ

What is Mellotron XL?

Mellotron XL is a mobile application that digitally recreates the sounds of the original Mellotron and Chamberlin tape keyboard instruments. It provides 18 authentic sounds derived from the original tapes, along with emulations of different instrument models and a built-in reverb effect.

What kind of sounds does Mellotron XL offer?

The app features 18 distinct sounds taken directly from the original Mellotron and Chamberlin libraries. These include iconic instrument sounds like strings, flutes, and rhythm ensembles, famously used in classic songs by artists like The Beatles, The Moody Blues, and Radiohead.

Is Mellotron XL compatible with other music apps?

Yes, Mellotron XL supports Core Midi, allowing for MIDI input and output. It also integrates with Audiobus, supporting Audiobus 2 & 3 for output and Audiobus 3 for MIDI input, enabling seamless use within a mobile music production workflow.

What is the history of the Mellotron?

Invented by Harry Chamberlin in the 1950s and later popularized as the Mellotron in the UK, it was a revolutionary keyboard instrument. It used magnetic tape loops for each key to play back pre-recorded instrument sounds, offering keyboardists a way to access realistic instrument sounds before the advent of digital samplers.

How much does Mellotron XL cost?

Mellotron XL is a paid application. There are no in-app purchases or advertisements mentioned in the provided description, indicating a one-time purchase for full access to its features and sounds.