goonobu Apps

Piano Technician Service Log

Tuning & Service by Instrument

Piano Technician Service Log keeps tuning and service history organized around the instrument, so the record of what was done to this piano follows the piano — not a customer folder that gets harder to search as a household grows.

Works fully offline One-time purchase 7-day free trial No accounts, no ads

What Piano Technician Service Log does

Piano Technician Service Log contains no tuning device and does no microphone-based pitch analysis. Every pitch, cents value, and measurement in the app is entered by the technician from their own equipment and judgment.

Frequently asked questions

Does the app listen to the piano and tune it for me?
No. Piano Technician Service Log has no built-in tuning device and does no microphone-based pitch analysis. Every pitch and cents value you see was entered by hand from your own equipment.
Can I track a piano without a serial number?
Yes. Instruments are identified by a device-generated ID, and serial number is an optional field — useful when you have it, but not required, since serials repeat or go missing over time.
How does the cents delta avoid being misleading?
A cents deviation between visits is only shown when both visits recorded the same reference pitch (e.g. both A=440.0 Hz). If the reference pitch differs, the app normalizes to Hz or states plainly that the readings aren't directly comparable, rather than showing a misleading cents number.
Does the app schedule my appointments?
No. There is no scheduling or calendar feature. The app opens on Recent Visits — a log of service already performed — and appointment scheduling stays in whatever calendar app you already use.

Pricing

One-time purchase
US$9.99

Free to download, with 7 days (168 hours) of full access from first launch. After the trial, unlock permanent access with one non-consumable in-app purchase — no subscription, no recurring fee. Existing instrument histories remain viewable and exportable as PDF even before you unlock. Restore Purchases is always available in Settings.

Privacy

Instruments, visits, tuning records and photos stay on your device. Piano Technician Service Log has no user accounts, no ads, no analytics, and no server. See the full Privacy Policy.

Support

Questions, feature requests, or trouble with a record: goonobu@gmail.com