Is your piano in tune? PianoAudit listens while you play every key, maps your piano against its ideal tuning curve, and answers in plain language — from "in good tune" to "this needs a pitch correction." No account, no ads, and the complete diagnostic is free.
HOW IT WORKS 1. Set your phone on the piano and play each key. 2. Watch every note land on the graph in real time. 3. Read the verdict — a clear recommendation backed by the numbers. A full measurement takes only a few minutes. Around 20 keys is enough for a confident verdict; playing everything gives the fullest picture.
WHAT THE FREE VERSION INCLUDES • Measure all 88 notes — real-time pitch measurement built specifically for pianos • The tuning curve — your piano against its own ideal stretch curve, with an acceptable band drawn in, so you can see if a tuning is "in range" • A straight answer — "In good tune — no tuning needed now." "A pitch correction and a full tuning are recommended." • A shareable PDF assessment of your piano • One piano with two saved measurement sessions
WHY IT MATTERS Pianos drift out of tune slowly — day to day you adapt and stop hearing it. Seasonal humidity swings pull the pitch up and down, and a piano left too long can drop far enough that it needs extra work (a pitch raise) before it can hold standard pitch again. PianoAudit shows you where your piano actually stands, so you know when it's time to call your tuner — and when it isn't.
FOR PIANO TECHNICIANS PianoAudit Pro turns the measurement into a customer deliverable: • Before/after tuning reports — a clean one-page PDF with your business name, overall pitch, and average deviation • Document the pitch raise, justify the work, build trust • A measurement takes about 90 seconds — play a quick chromatic scale, or simply leave it running while you check your unisons • Works alongside any ETD — or your ears • Unlimited pianos and unlimited session history Ask prospective clients to measure their piano with the free app and send you a screenshot — quote the pitch correction before you ring the doorbell.
UPGRADES • Plus (one-time purchase): up to two pianos, unlimited session history, compare multiple sessions on one graph • Pro (subscription or lifetime): everything in Plus, unlimited pianos, branded before/after customer reports Same app and same tiers on iPhone and Android — exported piano files move freely between platforms.
PRIVATE BY DESIGN Audio is analyzed live and immediately discarded. Only the measured numbers are kept on your device. No account, no ads, nothing leaves your phone.