Wotja V5 is now retired. See the new version.

Composer Mixer Writer Player

Software for: iOS, macOS, Windows, Android

Love creating music or writing?

Use Wotja (sounds like "wot-jah") to create your own live ambient & adaptive generative music, reflective music & MIDI and 'text-to-music' melodies & music ideas. Generate 'cut-up text' for creative writing, too.

Ever-evolving Wotja is itself the evolution of SSEYO Koan, Noatikl, Mixtikl, Liptikl & Tiklbox. It uses generative techniques we have been crafting for nearly 30 years.

History: Generative Music is a term coined in 1995 by Brian Eno whilst working with SSEYO Koan Pro.

User Reviews

"Masterpiece", "hands down the best generative software that I have ever used", "Brilliant", "Extremely musical", "Deep and professional", "best MIDI composition tool", "Love Wotja!"

For Everyone

As you'd expect of a system with a long history of continuous development, Wotja is deep, unique & powerful. You don't, however, need to be a musician or expert to use Wotja. Anyone inquisitive can learn to master its power; see our video tutorials.


'Wotja X 2018' or 'Wotja A 2018' is the paid-for 'annual' non-subscription feature unlocked version of 'Wotja X' or 'Wotja A' (where available) for 2018.

Example Uses

  • Create & record your own custom, high quality, license/royalty free background music for videos, CDs etc.
  • Create automatic albums and playlists of mixes for meditation, sleep, relaxation, yoga, art, installations, small shops etc.
  • Create 'reflective music' melodies using 'Text-to-Music'; use text in ANY language
  • Experiment with sound design, generative music composition, MIDI input interactivity etc.
  • Drive other MIDI synths via MIDI Out
  • Use the 'Cut-Up' Technique to help break writer's block; discover new ideas for lyrics, songs, poems, haiku, stories etc.
  • Open Wotja, Noatikl, Mixtikl & Liptikl files

Key Features [See 'Free Mode']

  • Easily generate beautiful live ambient music, MIDI & melodies
  • 100s of gorgeous generative music templates for mixing & editing are included
  • 130+ real-time changeable generative (MIDI) music parameters
  • Multi-channel MIDI Out/In [iOS/macOS: CoreMIDI & Virtual MIDI; Windows: Windows MIDI ; Android - see requirements]
  • 'Text-to-Music' function to quickly generate reflective music & melodies using text in ANY language
  • Mix randomization options for fast creation of ideas, mixes & automatic albums
  • 48 independent content cells in 12 tracks for live mixing/generative cell sequencing
  • Editors to let you experiment with sound design & create modular synth/FX networks
  • SF2 wavetable & WAV/Ogg loop support for custom sounds
  • Cut-up editor for word locking, syllable rules, word alternatives, 5 source fields & more
  • Mixdown recording to VIDEO [iOS/macOS only], WAV, MIDI so you can easily use/share your creations
  • Up to 8 hours continuous live music generation [Music Play Time Timeout]; press play to restart
  • Inter-App Audio & Audiobus 2/3 support [iOS]
  • iCloud & iCloud Drive support [iOS/macOS]
  • Light & dark UI modes
  • Opens Noatikl, Mixtikl & Liptikl files
  • Lots more…


Wotja Magazine Reviews


"Wotja is really one of a kind in the generative music space, there’s nothing like it at all. It’s really a seriously big bundle of tools, but all in one app, and all with the same purpose. Intermorphic has some serious credentials in this area, having been in the world of generative music for well over a decade now."

Wotja User Reviews


"As an accomplished musician in my own right, investigating alternative means of generating sound is a longstanding interest of mine. Even after a thirty year career in the arts, this app has completely changed my perception of the concept of music itself! I implore all students of music to explore this software in its entirety- this past week has had me rediscover my love for creation."

"Light years ahead!"

"Wotja X is by far the most sophisticated and powerful generative music application available."

"Amazing Stuff!"

"I love the textures I’m getting already. If you’re thinking of purchasing, it’s well worth the price!"

"Fantastic support"

"Wotja is a fantastic generative sound canvas that you can control - or just listen to. It can be as easy as loading one of many included mix albums, to the generation of random mixes, to manual mix editing to actually getting dirty under the hood with the voice editing and the instrument design. It goes pretty deep!"

"Works well"

"This company is fantastic at what it does."

"A vehicle, a journey, a playground"

"All the toys, and far more than the sum of its parts. (Autocorrect had it as "more than the sum of its arts", which is actually more accurate)"

"Generative Music Masterpiece"

"These guys are Ambient legends and now we can all work with their tools. Create your own ambient tracks or use Wotja to create some initial ideas to build upon. I use this to quickly bang out some background music, but mostly it is the starting point for composing. I find having Wotja build a nice little background bed I can compose over; my tracks go places they never used to (in a good way). Wotja can be used as a stand-alone app or as just one element in your songwriting toolkit. I really love Wotja. A lot!! ... When you think of the fact that these guys helped develop ambient music generative technology from its infancy, then supporting them by buying the app only makes sense."

"Fantastic App!!!"

"Get the free version, try out everything for 3 days or just buy the current yearly version. You will not regret it!"

"great compositional tool"

"an indispensable instrument for widening your scope, when it comes to composition. Thank you for your work!"

"Surprisingly good results"

"This app is so much fun and the results are often beautiful and interesting. The cut-up technique lyric generator is worth the price. It's flexible enough so that you can steer the direction of the outcomes and continue to refine until you find something you like. I don't think there's another program like this."


"Loving this application! A great way to explore some amazing sounds and create new music. For all of it’s depth it’s incredibly easy to get started. Tech support is phenomenal. These guys really care about what they build! Highly recommended!"

"Professional grade! "

"Wotja X is the most powerful and feature rich application for generative music creation."


"... a specialist app for making generative music ... the developer goes to great length to make it as accessible as possible to all (without losing the appeal for more experienced users). I really like it ... Recommended."

"Deep and professional app"

"If you loved Noatikl and Mixtikl then checking out Wotja is almost required. The guys at Intermorphic Ltd have wrapped up all the great stuff from the earlier apps and delivered them here in a beautiful package. I consider it my number one composing tool when I'm working in the Ambient genre."


"Intermorphic continues to produce brilliant apps. The possibilities of Wotja are vast and deep."

"Unique App"

"A unique app, which is getting lots of updates. Very deep, it requires considerable time to delve into it's complexities. It's well worth it though, in my view."

"Best generative music app"

"There is so many possibilities on this app. The creators are super nice people, theres only 2 of them but they do answer very quickly and are not greedy... It really scares me to think that the developers would stop supporting and growing such amazing tools, please don't! Much love"

"Completely changed my mind"

"I recently purchased the "pro" (non-subscription based) version of this. Like any musical instrument, it rewards more practice and play. And the fact that there are so many parameters to tweak, change (or not - you can use templates and leave them alone, but where's the fun in that?), modify, etc, only makes for more surprises and creative experimenting. You can just experiment, as with modular, old-school analog hardware, and see what happens. And quite often, there are very satisfying results. This is very powerful software. These guys are ***THE*** pioneers along with Eno in generative music. They clearly love it and deserve to make a decent living and be supported for their long-term and continuing work. Highly recommended."

"The perfect sleep machine."

"Intermorphic is awesome!! I was a little hesitant to purchase another subscription service, but it all really factors out to only about a dollar per month. Wotja is hands down the best generative software that I have ever used. Extremely musical. Keep up the good work."

"Still the best MIDI composition tool in my toolkit"

"Keep in mind that even though the app is associated with "generative music" and ambient sounds, it is possible to create music in any genre with this - its possible to direct every voice to play note by note OR just tell a voice to improvise OR tell a voice to follow and/or harmonize with other voices. ... nothing gives this much control to a composer on iOS and I've tried almost every sequencer, generator, MIDI tool available. It's very much worth learning, the developers are responsive and there is a great website for support."

"Every kind of amazing"

"Intermorphic's apps have always been strong on interoperability, but here they've managed to combine what is effectively Noatikl 4, Mixtikl 8, and Tiklbox 2 into a single beautifully-designed all-in-one generative mega-app – putting an end to all the copy-and-paste faffing that used to be involved if you wanted (e.g.) to use Noatikl content in Wotja. ... this is the culmination of everything Intermorphic have done, and an all-in-one machine for the creation of wonders."

"having the time of my life"

"It was amazingly easy to connect to my PC DAW with rtpMIDI so I can use my own sounds but it's hardly necessary, the latest Sound Engine is excellent. I thought I'd just say...excellent job. Thanks."


Wotja: for macOS, Windows, iOS, Android


Featuring live created generative music...

See the Intermorphic YouTube channel for our tutorials and other videos.

Wotja X V5.9: Generative Music Suite for Mac in 30s

Wotja X V5.9: Generative Music Suite for Windows in 60s

Wotja X V5.9: Generative Music Suite for iPad in 30s

Wotja X V5.9: Generative Music Suite for iPhone in 30s

Wotja V5: MIDI Out Pt1 - Using Generative Drum Templates to Play Beatmaker; mix in AUM

Wotja V5: MIDI Out Pt 2 - Using Generative Music Templates to Play Thumbjam/Beatmaker 3; mix in AUM

Wotja V5: Using MIDI Out to Play 3rd MIDI Synths (Analog Synth X / Thumbjam)

Wotja V5: How to Make & Tweet a Wotja Mix Video Recording

Audio Examples

Audio Recordings

The mix recording below was created from the 2 part video tutorial above (download the wotja file).

Listen to some other recordings (medium quality MP3).

Included IM Pak Content Mix Recordings
Ambiences 12 gen 'parts'
Arps 16 gen 'parts'
BellsGlasses 15 gen 'parts'
Drones 18 gen 'parts'
MelodicPads 15 gen 'parts'
Melodics 18 gen 'parts'
Strings 8 gen 'parts'
Weirdness 7 gen 'parts'
Windharp 7 gen 'parts'
Single Cell Demo Pieces Content Piece Recordings
Arp love Merged templates
Bells and pulse Merged templates
Calm trails Merged templates
Cosmic Merged templates
Ebb and flow Merged templates
Piano and glass Merged templates
Tiklbox Calm 5 Custom piece
Tiklbox 6 Custom piece
Included IM Pak Content Mix Recordings
GenMix1 29 gen 'parts'
GenMix4 23 gen 'parts'
GenMix5 12 gen 'parts'
GenMix6 25 gen 'parts'
GenMix7 25 gen 'parts'
DroneMaker 1 32 gen 'parts'
Generative Drums 1 (MIDI) 25 gen 'parts'
Generative Drums 2 (MIDI) 25 gen 'parts'
Generative Elements 1 (MIDI) 25 gen 'parts'

Shared Wotja Videos - Example

Variants & Versions


RECOMMENDATION: Unless you specifically need the accessibility features in 'Wotja A', every new customer should consider getting the 'Wotja X' variant.

Wotja is currently available in two 'variants' ('Wotja A' and 'Wotja X').

Wotja started out in 2014 as an app for iOS/macOS and was therefore at the time 'Apple-only'. Being a 'native' version, we were able to gradually include support for some of the Apple accessibility capabilities present in iOS and macOS. To keep things simple we're choosing in the docs to refer to this variant as the 'Accessibility' version and so it is called 'Wotja A' and it has the foregoing icon.

So that we could run Wotja on multiple platforms we've for a good while now been hard at work on a new cross-platform UI variant (i.e. 'X') that we are presently calling 'Wotja X' and has the foregoing icon.

As of Wotja V5.4 these two variants are now major feature equivalent with only a few minor differences between them meaning we now just refer to 'Wotja' (unless we need to refer to a specific variant). In Wotja V6 for 2019 all new development will be on the new UI variant but throughout 2018 we will update both Wotja V 5 variants in tandem and so no paying customer will lose out.

We now have just one User Guide and documentation common to both variants. As the 'Wotja X' UI will be the UI we take forward in future we use screenshots from that.

To get familiar with the new UI, and with one exception, we do now recommend that new customers purchase the 'Wotja X' variant which is what we feature links to on this page. If you are on iOS and specifically need the Apple Watch companion app or accessibility support then you can still get 'Wotja A' from the iTunes App Store.


Wotja is available in three versions (Paid-for 'Annual', Free + Subscription, Free):

Paid-for 'Annual' version (2018)

OS Versions: macOS, Windows, iOS, Android

Variants/branches: Wotja X / Wotja A (AKA 'Wotja')

  • 'Wotja X 2018' is the Paid-for 'annual' version of 'Wotja' V5. It will only be updated in 2018. Alternative: The corresponding Subscription version with an active 'Unlocked' Subscription has the same Feature Set.
  • Wotja X 2018 for Windows is available only from the Microsoft Store.
  • Wotja X 2018 / Wotja A 2018 (AKA 'Wotja 2018') for macOS are available only from the Mac App Store.
  • Wotja X 2018 / Wotja A 2018 (AKA 'Wotja 2018') for iOS are available only from the iTunes App Store.
  • Wotja X 2018 AZ for Android is available only from the Amazon Appstore.

Subscription Version (free, with In-App Subscriptions)

OS Versions: macOS, iOS

Variants: Wotja X / Wotja A (AKA 'Wotja')

  • A powerful FREE app with an In-App Store. It runs in 'Free Mode' until purchase of the monthly 'Unlocked' auto-renewing In-App Subscription. On lapse of the In-App Subscription Wotja X reverts to the 'Free Mode' of operation.
  • Long Play: The 'Music Play Time Timeout' in Wotja X is set to 8 hours. When this is reached a mix or album will stop playing if it has not already done so and a simple manual restart can start it playing again. For specialist use cases where there is a need for to generate continuous live background music for longer than 8 hours, e.g. for art installations, a small shop etc., the subscription version allows it to be extended by the purchase of one of the specialist 'Long Play' tiers of auto-renewing In-App Subscription. See: FAQ on Wotja X Long Play.
  • Note: It is our intention in the longer term to release subscription versions for Windows and Android but as of yet we have no ETA.
  • For the benefits of In-App Subscriptions read this FAQ entry.

FREE version (locked in Free Mode)

Versions: Windows, Android

Variants: Wotja X

  • These versions are all permanently locked in 'Free Mode'.
  • Get the annual versions above if you want to use it with Free Mode 'Unlocked'.
  • Note: As noted above, in due course we may add In-App Subscriptions to the Windows and AZ versions; at that point they could then be 'Unlocked'.

'Free Mode' & Limitations

There is a way to use Wotja for FREE on every platform it is available for (iOS, macOS, Windows, Android). We call this the 'Free Mode' or 'Free' tier Feature Set.

This is available in a free version that is either permanently locked in the 'Free Mode' Feature Set (Windows, Android versions) or is by default locked in a 'Free Mode' Feature Set until an 'Unlocked' In-App Subscription is in place, purchased from an In-App Store (macOS, iOS versions). When an 'Unlocked' In-App Subscription lapses then Wotja simply reverts to operating in the 'Free Mode' Feature Set - it's as simple as that!

The 'Free Mode' Feature Set does have certain Limitations, of course, but it is powerful in its own right and also a means for testing/trial for those interested in considering a purchase. Alternatively, consider getting the paid-for feature-unlocked 'annual' version instead, e.g. 'Wotja X 2018'.

Wotja Feature Sets
Area/Feature 'Free' tier
(AKA 'Free Mode')
  'Unlocked' tier
(AKA 'Pro')
Music Play Time Timeout [MPTT] 1 minute   8 hours
MIDI Out/In Channel 1 only   Multi-Channel
Mixdown Recording capability No   Yes
Openable Files (.wotja, .wotjabox, .wotjalist) All   All
Album Mode
'Automatic Album' Max Mix Durations [or limited by MPTT] 30 seconds   4 hours
Change mix position in an Album No   Yes
Change Item Override Settings No   Yes
Delete mix from an Album No   Yes
Save/export an Album No   Yes
Add saved mix or mix template to an Album No   Yes
Export mix from an Album No   Yes
Playlist Mode
Add to/Edit/Save/Export Playlist No   Yes
Mix Editing Mode
Mix & Cut-Up Save/Export No   Yes

The benefits of 'Free Mode'

  • For free, use what you create, save & record (do still comply with the EULA and Terms of Service however)!
  • If you have an interest in Generative Music and you are someone who chooses only to use Freeware and/or if you are an Educator or in Education, then Wotja 'Free Mode' means you can explore and work with such things for free. As Wotja is a system that is undergoing continuous development, including being ported to other OS, it should be an app you might well wish to consider using!
  • When you find you want to do more than you can in Free Mode, then there are low cost Subscription and Paid for 'Annual' version options you can purchase.

What can I do in 'Free Mode'?

  • Create and save automatic albums of generative music mixes:
    • Wotja supports making automatic albums, adding mixes to them, and playlisting.
    • You can add mixes to that album, too, and playlist it.
  • Explore generative music composition and sound design:
    • Use the Intemorphic Music Engine (IME) editors to try out all sorts of generative techniques and end up with something totally custom; start with the generative settings in the available templates if you want.
    • Use the Intermorphic Sound Engine (ISE) editors to create totally custom modular synth/fx sound networks, including using your own SoundFonts; start with the sounds in the available templates if you want.
  • Use MIDI Out/In on Channel 1
  • Although in-app support for mixdown recordings is not included, you can make up to 1 minute recordings of Wotja as follows: on iOS using Inter-App Audio or Audiobus (and a suitable audio/MIDI recording app) or on other devices using any app that can record system audio/MIDI.

Key Features

See what's new in Wotja 5 vs Noatikl 3, Mixtikl 7, Liptikl 2 and Tiklbox 1.

Wotja 5

Key Features
Wotja X
Wotja A
macOS WJX NEW (5.2)
Windows WJX NEW (5.2)
iOS WJX NEW (5.2)
Android (incl. ARM Chromebook) WJX NEW (5.2, 5.8)
Paid-for 'annual' version
FREE versions
(See 'Free Mode')
WJX NEW (5.2)
FREE version with In-App Subscriptions
(See 'Free Mode')
WJ NEW (5.3 - 1 month Unlocked tier)
WJX NEW (5.2 - Long Play/Unlocked tiers)
Accessibility [macOS] - WJA NEW (5.12)
ISE Preset Selector WJX NEW (5.11)
ISE Editor Panel WJX NEW (5.10)
UI Colour Scheme (Light/Dark) WJX NEW (5.9); WJA NEW (4.5 [iOS])
Mix Network IME Editor Panel WJX NEW (5.8)
MIDI Transport Control (AKA MIDI Machine Control – MMC) NEW (5.6)
MIDI Clock Sync NEW (5.6)
Mixdown to Video (iOS/macOS) NEW (5.5)
Full Deep Editing (Cut-up) WJX NEW (5.4); NEW (4.13)
Cut-Up Text Editor
(See 'Free Mode')
WJX NEW (5.4); NEW (4.2)
Syllables in Cut-Up Rules
(See 'Free Mode')
WJX NEW (5.4); NEW (4.3)
Cut-Up Rule Editor WJX NEW (5.4); NEW (4.3)
'Sources Only' Cut-up Mode WJX NEW (5.4); NEW (4.3)
Wotja Word Database WJX NEW (5.4); NEW (4.3)
Full Deep Editing (Generative/Sounds) WJX NEW (5.3); WJA NEW (4.13)
8 hour Music Play Time Timeout (MPTT)*
(See 'Free Mode')
NEW (5.2 - Wotja Unlocked)
NEW (5.1 - Wotja 2018)
NEW (5.0 - Free Mode 3 mins)
Auto Albums
(See 'Free Mode')
NEW (5.2 - Fewer Free Mode limitations)
NEW (5.0)
Auto-generated Mix/Album Icons NEW (5.0)
Album Randomisation Settings NEW (5.0)
BP3 Backings Template Pak NEW (5.0)
Use 24-bit WAV files in Paks NEW (4.11)
Single Cell Display Mode NEW (4.10)
BP2 Backings Template Pak NEW (4.9)
Support for Audiobus 3 (audio) [iOS] NEW (4.7)
Make Audio Mixdown Recordings
(See 'Free Mode')
NEW (4.6)
Make MIDI Mixdown Recordings
(See 'Free Mode')
NEW (4.6) (Desktop only)
Album/Playlist Player NEW (4.1)
New Files (.wotja, .wotjabox) NEW (4.1)
Improved slider control NEW (4.1)
Wotja URL (V4) export NEW
2 x IM Albums included (Were $1.99 each)
Hundreds of templates
Save ALL mix cells
(See 'Free Mode')
Export ALL mix cells
(See 'Free Mode')
Multi-channel MIDI Out/In
(See 'Free Mode')
Included Album Player
Sleep Timer
Randomization - New Mix / Cell
Pak List Tagging
Template List Tagging NEW
More Randomisation Options NEW
Text To Music (TTM)
(Use text in ANY language )
Per Voice TTM Composition Params NEW
Up to 12 Tracks
Easy Track Mixing
Easy Voice Mixing NEW
Track Cell Sequencing
Track Rules
Track FX / Mix FX
Mix in Pak OGG/16-bit WAV + MIDI files
Full IME 5 Editors NME 3
Full ISE 5 Editors PSE 3  PSE 3
Background Image NEW
Text/Background Colour NEW
Open Noatikl Files
Save Noatikl 3 Files
Open Mixtikl Files
Export (Legacy) Mixtikl 7 Files
(See 'Free Mode')
Inter-App Audio / AudioBus (2/3) [iOS]
CoreMIDI / Virtual MIDI
Listening Voices
Intermorphic Music Engine 5 Other apps use NME 3
Intermorphic Sound Engine 5 Other apps use PSE 3
UI for better productivity NEW
Apple Watch App - NEW (4.4)
Improved Accessibility [iOS] - NEW
Accessibility [iOS] -
Blend Screen [iOS] - - NT iOS only - new Voice Mix panel
Tap Play - -
Make Mic Recordings - -
Scripting - - (Desktop only)