Pitch as a physical space.
Just-intonation tuner & lattice — serious tracking, zero clutter.


Lattice as a map of harmony.
Tenney renders pitch as coordinates. Pan, zoom, and fold the audible band. Labels adapt to density; guides and prime overlays (7, 11) can be toggled on demand.
Prime-aware layout
Per-prime basis vectors place nodes by monzo. Angle/length come from log2(p), so movement tracks musical distance.
Nearest ratio with neighbors
Oddized p/q labels; fast search under your prime limit. Shows lower/higher neighbors in Hz with cents error.
HEJI lens
When you focus a node, the staff lens displays ratio + Δ¢ vs ET; full HEJI glyph set hooks in cleanly.

A tuner that locks — and stays locked.
Under the hood: real-time FFT on Accelerate, phase-slope refinement for instantaneous frequency, then a 2nd-order digital PLL for low-jitter readouts.
Modes: auto • strict • live
Switch UI behavior without touching the detector. Stage mode dims the periphery; lock targets when you mean it.
Pro input aware
USB/line-in/headset mics are detected and labeled. Works great with silent practice and DI rigs.
Labels that fit your brain
Ratio or HEJI; keep ratio alongside staff if you prefer. A4 reference set to 440, 442, or a custom Hz.

Join the Tenney public beta
Early access. Real feedback. Help shape a JI tool built for stages.
Join beta