Privacy Policy

Last updated: November 7, 2026

Overview

Whammy ("the App") is published by Best Day Labs ("we", "us"). It turns guitar tabs into a 3D guitar that plays along, and lets you export videos of it. This policy explains what information the App uses and where it goes.

Information Stored on Your Device

The following stays on your iPhone and is never sent to us:

• Your song library, including songs you import from files or find in the App
• Your settings and preferences (look, guitar, camera, playback options)
• Answers you give during onboarding (for example your playing level)
• Videos you export, which are rendered entirely on your device
• Any photo you choose as a background, which you pick through Apple's photo picker

Information Sent to Third Parties

To work, some features make requests to other services. We do not operate these services and do not receive the data:

• Song search and tab download — when you search for a song, your search text is sent to a third-party tab database to find and download matching tabs.
• Album art — song titles and artist names are sent to Apple's public iTunes Search service to fetch cover art.
• Song suggestions — to suggest songs, the names of artists you've played are sent to Deezer's public music catalog to find related artists. This happens without any account or identifier.
• Built-in browser — if you use the App's web search to browse tab websites, those websites (and the search engine) receive your requests just as they would in Safari, and their own privacy policies apply.

Like any internet request, these services may see standard technical information such as your IP address. The App does not send them your name, email, contacts, location or any identifier we create.

Feedback You Send

If you choose to send feedback or request a song in the App, we receive your message, the email address you enter (optional), and basic technical details: the App version, your iPhone model and iOS version. We use this only to answer you and improve the App. Feedback is delivered to us through Discord, which processes it on our behalf. Nothing is sent unless you tap Send.

No Accounts

Whammy does not offer or require an account. There is no sign-up, no login and no email collection.

No Ads or Third-Party Analytics in the App

The App does not include advertising or third-party analytics SDKs, does not track you across other apps or websites, and does not sell data.

Note: this website uses Google Analytics for basic page-visit statistics. That is separate from the App.

Permissions

• Photos (add only) — used only when you choose to save an exported video to your photo library.
• Microphone — used only in learn mode, to hear which notes you play on your guitar. The sound is analyzed on your iPhone in real time and is never recorded, saved, or sent anywhere.
• Photo picker — if you pick a background photo, Apple's picker gives the App only the photo you select.

You can change permissions anytime in iOS Settings.

Purchases

Subscriptions are processed by Apple through the App Store. We never receive your payment details. See our Terms of Use for subscription details.

Sharing

When you share a video, it goes through iOS's share sheet to the destination you choose. What happens to it there is governed by that service.

Data Retention and Deletion

Because your data lives on your device, you control it. Delete songs inside the App, or delete everything by removing the App. We hold nothing on our side to delete.

Children's Privacy

The App is not directed at children under 13, and we do not knowingly collect personal information from children.

Changes to This Policy

We may update this policy from time to time. Changes will be posted on this page with a new "Last updated" date.

Contact

Questions about privacy? Email privacy@bestdaylabs.com.