Mozaic Plugin Workshop1.4.2 - App Store

Create your own MIDI plugins: MIDI filters, generative music tools, basic sequencers, MIDI control panels, chaos experiments... Let your imagination take you places.

Mozaic runs inside your favorite AU MIDI host, and gives you practical building blocks such as LFOs, pre-fab GUI layouts, musical scales, AUv3 support (with AU Parameters, transport events, tempo syncing, etc.), random generators and a super-simple yet powerful script language. Mozaic even offers quick access to your device’s Tilt Sensors for expressive interaction concepts!

The Mozaic Script language is designed from the ground up to be the easiest and most flexible MIDI language on iOS. A language by creatives, for creatives. You’ll only need to write a few lines of script to achieve impressive things - or to create that uber-specific thing that was missing from your MIDI setup.

Check out the Programming Manual on Ruismaker.com to learn about the script language and to get inspiration for awesome scripts of your own.

Mozaic comes with a sizable collection of tutorials and pre-made scripts which you can use out of the box, or which can be a starting point for your own plugin adventures.

Features in a nutshell:
- Easy to learn Mozaic Script language: easy to learn, easy to read
- Sample-accurate-everything: the tightest MIDI timing possible
- Built-in script editor with code-completion, syntax hints, etc.
- 5 immediately usable GUI layouts, with knobs, sliders, pads, etc.
- In-depth, helpful programming manual available on Ruismaker.com
- Easy access to LFOs, scales, MIDI I/O, AU parameters, timers
- Supports Sysex, with built-in checksum calculations
- AUv3; so you'll get multi-instance, state-saving, tempo sync and resource efficiency out of the box

Mozaic opens up the world of creative MIDI plugins to anyone willing to put in a few hours and a hot beverage or two.

Practical notes:
- Mozaic requires a plugin host with support for AUv3 MIDI plugins (AUM, ApeMatrix, Cubasis, Auria, Audiobus 3, etc.)
- The standalone mode of Mozaic lets you edit, test and export projects, but for MIDI connections you need to run it inside an AUv3 MIDI host
- MIDI is not sound; Mozaic on its own does not make noise... so bring your own synths, drum machines and other instruments!
- AUv3 MIDI requires iOS11 or higher

Version History Small fix: filenames are now remembered across sessions when saving/opening files 1.4.2 07/10/2025 Tiny bug fixed. 1.4.1 07/07/2025 Improved preset manager, supporting import/export of presets, drag & drop and creation of subfolders. 1.4 07/03/2025 Bug fixes 1.3.17 07/29/2024 - Fixed a bug where using host count-in sometimes caused the first beat to be skipped
- Minor update to text view behavior 1.3.16 02/05/2024 More robust handling of malformed SysEx messages 1.3.15 11/10/2023 Fixed an editor issue with very long scripts in iOS15 1.3.14 07/05/2022 Various minor fixes and improvements 1.3.13 06/25/2022 Minor internal fix 1.3.12 09/17/2021 Fixed a bug in the TranslateScale function 1.3.11 05/22/2021 - Improved compatibility with Drambo as an AUv3 host (mapping AU Parameters, etc.)
- Support for global cross-host AU Preset sharing (iOS13+) 1.3.9 12/26/2020 - Improved timing stability for outgoing MIDI events
- Better memory efficiency 1.3.8 10/09/2020 This version should play nice when Ableton Link is enabled in the AU host and Linked IAA apps are running in the background. 1.3.7 06/25/2020 - Improved behavior when changing transport controls while the host is not running
- Increased accuracy of the system timer functions
- Added state saving to Probability Gate preset as an example
- Minor internal optimizations 1.3.6 06/10/2020 Minor improvements. 1.3.5 01/28/2020 More refinements for Sysex handling 1.3.4 01/11/2020 Fixed an issue with sending/receiving multiple simultaneous Sysex messages sharing the same timestamp. 1.3.3 01/06/2020 Various minor fixes and improvements to keep your Mozaic experience tip-top. 1.3.2 11/16/2019 - Protection against "infinite loops" in your scripts
- Improved performance 1.3.1 11/11/2019 New features in version 1.3:
- Use "ColorPad" to change the tint of a trigger pad
- "SystemTime" function returns current system timestamp in milliseconds
- Maximum number of cells in arrays increased to 1024
- Maximum number variables bumped to 256
- Ability to trigger pads using AU Parameters
- Internal enhancements 1.3 10/26/2019 Mozaic now has Sysex support (with built-in checksum calculation).
4 new commands have been introduced to make Sysex handling easy:
- SendSysex
- SendSysexThru
- SysexSize
- OnSysex event
Check the updated Programming Manual on ruismaker.com for examples.

Added "Arpticles" preset: a hybrid between an arpeggiator and a particle generator.

Other changes and improvements:
- Preset ordering is now case-insensitive
- Pads can now have multi-line labels
- Fixed a bug with InScale
- Fixed a bug that sometimes changed the order simultaneous outgoing MIDI events
- Support for bitwise operators: & (and), | (or), ^ (xor)
- Fixed a bug in handling of long-code lines
- Performance enhancements
- Added some more specific error messages
- Fixed a bug with logging wrong event names in some error messages
- Releasing the Shift-key now also generates events when the finger is outside the button area 1.2 09/01/2019 What's new in version 1.1:

- Huge reduction in memory footprint when using large scripts: we're now talking kilobytes, instead of dozens of megabytes!
- Fontsize preferences are now persistent
- You can now refresh the presets window after importing presets in the standalone app
- Many internal fixes and optimisations 1.1 07/03/2019 Fixed an issue where occasionally a script-upload action would fail or the script window would show a blank screen. 1.0.9 06/26/2019 Fixes an error in the new Lazy Code Loading functionality. 1.0.8 06/24/2019 Another Mozaic update with nice improvements!

- Descriptions are now updated on-screen when you upload your script
- Filenames with extra "." are now handled correctly
- Empty array initialisers are now accepted: a = []
- The project filename is now saved along with the state of the plugin
- Lazy Code Loading: if you never look at code, it won't use any memory

Don't forget to check out PatchStorage.com every now and then for exciting user-created scripts! 1.0.7 06/23/2019