v2.4.0 — Timing & Technique trainers, History overhaul

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

Two new evidence-based practice modes.

Timing Trainer — lock your playing to the click. Pick a subdivision (quarters → 16ths); after each bar it scores your timing consistency — the tightness that separates pros from beginners — and shows whether you're rushing or dragging. Feedback comes after each rep (not a distracting live needle), and the tempo only rises once you've locked a couple of clean reps.

Technique Trainer — chromatic "spider" patterns and arpeggios, scored on smoothness (evenness) rather than raw speed. Safety-first by design: it cues a relaxed, light-pressure hand, nudges you to take breaks, and encourages varying your drills — the practice habits research links to lower injury risk. Weak-finger patterns are included, with honest expectations about how they progress.

History, rebuilt. Every mode now shares a consistent Progress chart (choose the metric, axis and scale) and a real Mastery breakdown. A new Adaptive focus panel shows exactly which items the spaced-repetition engine will drill next, alongside plain-language Suggestions for where to improve.

Calibration moved to Preferences (⌘,) ▸ Detection — it's a setup tool, so it now lives with the other settings instead of the main mode grid.

Plus a round of detection and stability fixes, including a steadier menu-bar mic indicator.

v2.3.0 — Per-device detection calibration tool

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

New: a per-device calibration tool. Plug in a different guitar, mic or interface and the app learns the detection thresholds that suit it — saved per device, so swapping rigs restores the right settings.

A guided Calibration wizard:

• Noise floor + soft → loud set the amplitude floors with an honest SNR verdict (it won't write floors that can't beat the noise).
• Ghost vs real — record muted vs real notes and chords to learn a per-rig boundary; the Metronome then shows a live REAL / GHOST readout for accent and muting drills.

Manual Preferences ▸ Detection edits now save to the active device's profile.

v2.2.0 — Scale Trainer: chord & CAGED visualisation

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

Scale Trainer graduates from experimental and gains a chord/CAGED visualiser:

• New Overlay picker: Off · Chord tones · CAGED.
• Chord tones lights up the arpeggio inside the scale and names the chord it outlines (e.g. Am7).
• CAGED highlights the actual chord grip the box sits in, names the shape (E·D·C·A·G) and chord, and draws a barre across the root fret for the E- and A-shapes — so a chord reads as a chord, not an arpeggio.

v2.1.5 — Scale Trainer: metronome counts in before the first note

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

Scale Trainer: the metronome now counts you in — it starts as soon as you press Start, while the clock and countdown still wait for your first played note (the speed ramp begins with the clock).

v2.1.4 — Scale Trainer: start the clock on the first played note

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

Scale Trainer: the session clock, countdown and metronome now wait until you play the first note — positioning your hand no longer eats into your practice time.

v2.1.3 — Metronome detection fixes, tunable detection settings, bugfixes

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

Highlights

• Metronome "Detect my tempo" now reliably registers your playing (onset-timestamp fix + lower attack floor), with a new live Signal diagnostic.
• Preferences (⌘,): new Detection tab (tunable attack/pitch thresholds) plus concert pitch (A4) and daily practice goal.
• "Min today" now counts all practice, including Vibrato and Scale Trainer.
• A general bugfix pass (lost-session-time, history chart, log-file safety, and more).

v2.1.2 — Chord Builder: inversion shapes on the fretboard

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

v2.1.1 — Bending: reliable hold on the thin strings

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

v2.1.0 — Scale Trainer sessions & CAGED boxes

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.

v2.0.1 — Scale Trainer: single-note highlight

Apple silicon · macOS 14+. The build is ad-hoc signed — on first launch, right-click the app and choose Open.