WanjoBanjo is the cozy digital workbench for banjo players, lutenists, and ukulele folk — a head tension logger, a string tension calculator, and an offline instrument vault, all in your pocket.
From drumhead tap tuning to bridge intonation, WanjoBanjo replaces scattered notebooks with one calm, precise workspace.
Drag the sliders to feel how scale length, gauge, and pitch shift the load on a string — and watch it hum in real time.
The string above vibrates at your chosen pitch — tighter tension flattens the swing and quickens the shimmer, just like on a real neck.
Effective Date: May 2026
WanjoBanjo does not collect any personal information, account details, or usage data. There is no sign-up, no login, and no tracking of your identity. Every measurement, tuning preset, and photo you log stays exactly where you put it: on your device.
Because we don't collect information, we don't use it, analyze it, sell it, or share it with anyone — including us. There is no analytics pipeline reading your tension logs or instrument photos.
All data — head tension readings, string tension calculations, tuning presets, fretboard measurements, and instrument photos — is stored locally on your device only. WanjoBanjo has no cloud backend, no remote database, and no server that ever sees your files.
WanjoBanjo includes no third-party analytics software development kits, no advertising networks, and no external trackers of any kind. The app works the same whether or not you ever have a network connection.
Since your data never leaves your device, it is protected by your device's own security — its passcode, encryption, and operating system safeguards. We recommend keeping your device's software up to date to benefit from those protections.
WanjoBanjo does not knowingly collect any information from anyone, including children under 13. As no data of any kind is gathered by the app, it does not present the risks that data-collecting apps do, in line with the spirit of COPPA.
There are no accounts to manage and nothing stored on our servers to delete, because nothing ever reaches us. You are always in full control: deleting the app, or clearing its data in your device settings, permanently removes your tension logs, tuning history, and instrument photos.
If this Privacy Policy is ever updated, the revised version will be published within the app with a new Effective Date at the top. Continued use of WanjoBanjo after changes take effect means you accept the revised policy.
Questions about this policy? Reach our privacy team any time at privacy@wanjobanjoapp.com.
🎶 Got a question about tuning presets, a bug to report, or an idea for the next feature? We'd genuinely love to hear from a fellow string enthusiast.
Collaborations, press, and luthier partnerships
partners@wanjobanjoapp.com⏱️ We typically reply within 24–48 hours — usually somewhere between coffee and the second cup.