A generative music instrument for Mac and Windows. Place notes on the grid, set probability, and let the patterns evolve — no two performances ever sound the same.

Buy — $14.99 USD Try Free — 14 Days
See it in action

Probability & Improvisation

Complex patterns built using additive and subtractive playing with probability controls

Features
Everything you need to create
🎵
Original Sound Engine
ToneField Classic — a pure sine wave synthesis engine forensically crafted to produce a unique, warm tone unlike anything else.
🎲
Generative Probability
Set per-column probability so patterns evolve differently on every loop. No two performances are ever identical.
🎹
13 Scales, All 12 Keys
Major and minor pentatonic, all 7 modes, harmonic minor, melodic minor, whole tone and diminished. Change key instantly.
⏺
Live Recording
Record your live performance as a WAV file — capturing every probabilistic variation and delay in real time. Drag straight into Logic Pro.
🎛
MIDI Integration
Export patterns as MIDI, or send live MIDI output to Logic Pro, GarageBand or any DAW as the pattern plays.
🔊
Delay & Effects
Built-in delay with time, feedback, filter and mix control. The default 372ms timing locks beautifully at 80 BPM.
↔
Transform Tools
Flip horizontal or vertical, rotate, shift in any direction, or randomise your pattern instantly.
💾
Pattern Storage
Save up to 8 named patterns. Export as WAV, MP3 or MIDI. Your work is always preserved.
Pricing
Try free, then own it forever
Free Trial
$0
14 days, full access
  • Full app, no restrictions
  • 14-day trial period
  • Mac and Windows
  • No credit card required
Download Free Trial
Full Version
$14.99
USD — one time payment
  • Permanent licence
  • All features unlocked
  • Mac and Windows
  • Free updates
Buy ToneField
Mac users — important: macOS will block ToneField on first launch with a security warning. To fix this:

1. Open Terminal (Applications → Utilities)
2. Paste this command and press Enter:
xattr -cr /Applications/ToneField.app
3. Double-click ToneField — it will open normally.

You only need to do this once. The app is not damaged — this is a standard macOS security step for apps distributed outside the App Store.
Available on
Mac — Apple Silicon Mac — Intel Windows 10+