FretTrainerEZ vs Aethron

Know every note on the neck — cold. FretTrainerEZ is the no-fluff fretboard trainer and music theory toolkit built for guitarists who are serious about mastering the fundamentals. Whether you're just starting out or you've been playing for years and still hesitate on the higher frets, FretTrainerEZ drills the knowledge in fast — and gives you the tools to go deeper. THREE TRAINING MODES • Name It — A note lights up on the fretboard. You name it. • Find It — A note name appears. Find every position on the neck. • Memory Challenge — Positions flash briefly, then disappear. Tap what you remember. Practice at your own pace or race the clock in Timed Mode (30s, 1 min, 2 min). Three difficulty levels — Beginner (frets 0–5), Intermediate (0–10), and Advanced (full 22-fret neck). MUSIC THEORY TOOLKIT • Circle of Fifths — Tap any key to instantly see tonic, subdominant, and dominant chords, diatonic chord pills, and common progressions with real chord names. • Chord Charts — Diagrams for 70+ voicings across all 12 roots: major, minor, dom7, maj7, m7, sus2, sus4 — with degree names, intervals, and chord tone breakdowns. • Chord Jam — Build your own progressions, drag to reorder, tap to play. • Scale Explorer — 10 scales including Pentatonic Minor, Blues, Dorian, Mixolydian, Lydian, and more — mapped live on the fretboard for every root. • Chromatic Tuner — Real-time pitch detection with a precision cents meter. No internet required. BUILT RIGHT • Karplus-Strong string synthesis — note audio that actually sounds like a guitar • 5 wood fretboard themes: Rosewood, Maple, Ebony, Walnut, Midnight • Sharps or flats — your choice, applied everywhere • Haptic feedback on correct answers • Fully offline — no network calls, no analytics, no tracking • Zero ads. Zero subscriptions. Buy once, own it forever. Buy it once. Own your fretboard.

Aethron is a minimal oscillator instrument for observing sound as waveform. Rather than a full music production app, Aethron is designed as a small sonic device for touching, layering, and reshaping oscillating sound. Add oscillators, tune frequency and amplitude, switch waveforms, invert polarity, sync phases, randomize signal states, and store the sounds you discover. Features * Multiple oscillators * SINE / SAW / TRI / SQR waveforms * Frequency and amplitude control * Fine frequency adjustment * SUM / SPLIT waveform display * RANDOM signal generation * POL +/- polarity inversion * SYNC phase reset * SOLO monitoring * STATES / STORE for saving setups * Automatic restoration of the last oscillator state Aethron is not a conventional synthesizer or a waveform viewer. It is a small instrument for touching invisible vibration through sound and waveform.