It blends two clocks — the days since you put the strings on (they oxidise even in the case) and your playing time. You set a typical play rate once and it accrues hours automatically. Coated strings get a longer life, and a "hard on strings" setting accounts for sweaty or acidic hands. Whichever clock is more used up drives the estimate.
No. You pick a typical play rate once — roughly how much you play this guitar — and it estimates wear automatically as the days pass. There are optional buttons to add an extra session on top, but you never have to log anything day to day.
Yes. Each time you log a change it records how long that set actually lasted, in days and hours. After a couple of changes it stops using generic numbers and predicts from your own history, so the estimate matches how you really play.
Yes — a separate set and history per guitar, pulling your guitars from My Guitar Profiles. No profiles saved? It works with a single default guitar. Everything stays private in your browser, no account.
