Wotja: Generative Music System

121 reviews
Content rating
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Wotja is a powerful & FREE Generative Music System. Use it to CREATE & PLAY live ambient music, lush drones, evolving soundscapes, text-to-music etc. or to RELAX with 1-tap 'flows' of generative music. Also supports MIDI Out/In. Go Pro to do the max!

NEW IN WOTJA 23 ('W23')
• WAE Sample Player Unit (poly, looping, reverse, MIDI triggered/pitch, samples saved to mix)
• LFO Unit Euclidian option
• Filter Unit 2/4-pole options
• SF2, Templates & Samples
• Template Editor
• One app bundle with FREE updates
• Much more!

Love to create? Easily make ambient music, soundscapes, drones, melodies, ideas, MIDI etc.

Enjoy learning? Develop human skills as you dive into generative MIDI composition, text-to-music, adaptive music, sound design, experimental music etc.

Want to relax? Start a 1-tap 'flow' for mix-after-mix of free-flowing generative music. No internet connection needed.

• App
• TV Player (Android TV)

See the Tutorials on wotja.com.

SSEYO Koan (1990-02), built by the Intermorphic founders, generated what came to be known as 'Generative Music'. Wotja is its continued evolution.


Ad-free & updates are FREE!

23 Feature Set (23 FS).

• Lite (Default): MIDI Ch1 Out/In only; auto-timeouts & some other limitations.
• Pro / 23 Pro: ALL 23 FS Lite auto-timeouts & limitations unlocked; Recordings licensed for Commercial Use (see EULA).

• Pro (30 Day Unlock)
• 23 Pro (One Time Buy)

• Unlocks Pro mode for 30 days from date of IAP purchase in a Wotja (23+) App but *only* on the device on which it is purchased AND provided the App is not uninstalled.

• Permanently unlocks Pro mode for the 23 Feature Set, i.e. 23 Pro mode, in all Wotja (23+) Apps installed under your App Store User ID.
• This OTB will *not* unlock Pro mode for New Features in a later Feature Set and whilst use of any such New Feature is detected by Wotja it will operate in Lite mode.


• 100s of editable generative music templates & Sound/FX presets
• 48 interdependent Cells in 12 tracks for live mixing/sequencing
• 'Flow' player for a succession of unique auto-generated mixes
• Wotja Music Engine (WME) with 130+ parameters (including 'Text to Music' [TTM] & Euclidian) for generative (MIDI) music generation
• Wotja Audio Engine (WAE) with Sample Player, 'Macro Oscillator 1', Reverb 2XL, Pitch Shifter plus many other synth & FX units
• Wotja Text Engine (WTE) for creating 'cut-up' text with word locking, syllable rules, 5 source fields
• Wotja Visual Engine (WVE) for visualizer, screensaver, mini games
• Wotja Script Engine (WSE) [ECMAScript AKA JavaScript] for programmatic control of parameters & adaptive music
• Includes many IM SF2 Soundfonts e.g.: Birds, Brush Kit, Drums, Environments, E-Perc, Hand Perc, E-Piano, Piano, Synths etc.
• Supports:
- Sleep timer
- Recording to WAV & MIDI [App, not Plug-in]
- MIDI Out/In
- For AU3/VST3 plug-in hosting and Wotja AUv3/VST3 plug-in get the iOS/macOS or Windows variants respectively

• EULA: https://wotja.com/legal/eula/
• MIDI ON ANDROID: To be able to use MIDI In/Out in Wotja requires that MIDI is enabled in both the OS and by the manufacturer of your device. See FAQ: https://wotja.com/help/#android-midi-out.


Wotja not working right? Use our 'Contact' webpage to let us know!
Updated on
Sep 16, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App info and performance
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

100 reviews
Frank Bassham
January 18, 2021
Very cool, though somewhat intimidating. I'm impressed but the Pro version is priced too high for me and the Lite version is too restrictive. My only other complaint is that I don't understand why generative music would be licensed for personal use only. I can see why the software used would need to be credited, but the music itself should be usable as a Youtube soundtrack, for example. Just my two cents.
January 19, 2021
Hi Frank. Thanks for taking the time to leave a review! We recently decided to bring the price of the Pro version down a bit to $17.99 (should be live in a few days). That version allows *commercial use of recordings*. The Lite version is free & allows personal use of recordings, e.g. for your own non-commercialised YouTube videos. Hope that helps!
De Kift
May 13, 2021
Wotja is an (almost) superb tool to create generative music *or* just to use it as an endless music player for that matter just a couple of mouse clicks away. The developers (two brothers) are very responsive to questions and suggestions (multiple of my suggestions have been picked up by the team and implemented in newer versions!). The cons: the GUI and workflow could use some improvements and I miss the most obvious hotkeys but apart from that: excellent!
2 people found this review helpful
April 22, 2021
Hi De Kift, Many thanks for your kind review. We hope the improvements in Wotja 21.7.0 will be enough to persuade you to increase your rating to 5 stars! Plus, of course, Wotja Lite is Free to download and use - making it even better value than Photoshop :) Best wishes, Tim and Pete
Yo Yo!
January 30, 2022
Powerful, but oh so complex! The user manual is almost incomprehensible, poorly written and organised. A new user needs a gentle introduction to this kind of complexity. Only a determined non-professional muso would persevere in the masochism of trying to learn this product from the manual! The free "lite" version is far too limited for any meaningful exploration, so I still don't know whether it's worth paying for.
1 person found this review helpful
February 8, 2022
It's true that Wotja is deep. The powerful free 'Lite' version allows *full mix editing* & even allows you to save mix changes (21.1.2+). We genuinely have no idea at all why you say it is too limited to explore. :( The User Guide is a reference guide; try instead our easy stepped tutorials (https://intermorphic.com/wotja/tutorials)! Best wishes

What's new

IMPROVED: Lite mode - Removed all Mix file locks; 'Pro mode only' limitations removed from several features (e.g. Script Editing, Import/Export etc.); auto-timeouts removed on two included Albums (Calm & Relax) - enjoy!
CHANGED: Wotja App icon no longer refers to version number (as all updates are now free).
RELEASE DETAILS: See wotja.com/releases/.
P.S. Love Wotja? *Please* give a new rating for each update, it really helps us!