FM 304
FM Groovebox
Free
iPad
FM 304 — 3x FM Synth Groovebox
FM 304 is a powerful trio of 4-operator FM synthesizers, each with its own sequencer and effects. Built for fast, hands-on sound design, every parameter is available with a one-knob-per-function layout — no menus, no digging.
Create evolving patterns, punchy sequences, and complex FM textures in seconds. Everything is on screen, ready to tweak, making it easy to move from idea to finished loop without breaking flow.
Features
• 3 independent 4-operator FM synthesizers
• Immediate one-knob-per-function control
• 3x 16-step sequencers (one per synth)
• Built-in effects: delay, reverb, chorus
• 3x LFOs for modulation
• 8 FM algorithms
• Note frequency quantisation
• 100 save slots
Designed for speed
No menu diving. No setup.
Just pure FM synthesis with everything visible and playable.
Bug fixes
The developer, Paul Betowski, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Paul Betowski
- Size
- 18.2 MB
- Category
- Music
- Compatibility
Requires iPadOS 12.0 or later.
- iPad
Requires iPadOS 12.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPad
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Paul Betowski