TB Flowtones

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Thanks to it's true VA synthesis engine, the use of analog-modelled non-linear filters and extensive modulation options, Flowtones sounds warmer and more analog than digital romplers and wavetable-based synths.

Price $9.99
Author ToneBoosters
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.64865 (37), current: 4.64865 (37)
Version 1.6.8
Released 08/10/2021
Updated 05/28/2026
TB Flowtones Virtual Analog Synthesizer app and AUv3 plug-in

Thanks to it's true VA synthesis engine, the use of analog-modelled non-linear filters and extensive modulation options, Flowtones sounds warmer and more analog than digital romplers and wavetable-based synths.

TB Flowtones comes as stand-alone app as well as AUv3 plugin.

True virtual analog synthesis features:
- 4 VCO architecture (two voice layers with two VCOs each)
- 4 synthesis engine types, in part modelled after famous analog synthesisers
- 36 analog VCO waveforms featuring all classic waveforms and more
- All VCO waveforms support pulse width modulation
- Full stereo and mono unison modes for each VCO independently
- Noise and subharmonic oscillators for each VCO
- Unique ring and self-modulation matrix
- High-quality, warm, non-linear filters (VCF) with over 30 filter types, including unique multi-resonance filters

Modulation features:
- Four LFOs with 30 waveforms each
- LFOs can modulate other LFOs, including themselves!
- Three additional envelope generators, with key velocity modulation
- Quick access to modulation strengths through context menus
- Hundreds of modulation signal paths available
- LFOs can produce noise as waveform to randomly modulate other parameters; for example to simulate slight variations in analog filter parameters as they happen in analog circuits.

Pro-grade effects
- Studio-quality reverb, delay, and chorus effects
- Unique formant filter to add vocal character
- Analog and digital distortion / bit crushing effects
- Master equaliser and peak limiter for final touch
- Non-linear power supply simulation for authentic interaction between notes

Step sequencer
- Fully integrated, intuitive step sequencer
- Can trigger chords and note series / phrases
- Can run asynchronously or synchronously to the host
- Smart copy/paste of note series to improve workflow
- Smart zoom: edit fine details while keeping an overview over the full sequence

Presets and intelligent randomizer
- Flowtones comes with hundreds of presets to spark your creativity
- Intelligent randomizer to explore endless sound synthesis possibilities


What you should know:
- Licenses acquired for this platform are not compatible with other platforms.
- Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.

Version 1.6.8 release notes

This update provides significant workflow, customisation, personalisation and performance improvements: - new MIDI learn functionality - Improved UI performance and reduced CPU load - Improved detection of drag vs click/tap logic for UI elements - Fix an issue with manual entry of automation lane values in certain hosts - New option to enable/disable GPU refresh throttling / high frame rate rendering - New option to enable highlighting of UI elements that accept keyboard input - New option to customize color scheme - Improved undo/redo functionality

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