Effective October 29, 2026
Locus - Genome Viewer (“Locus”) is a free app for iPhone and iPad made by Thad Judkins. This policy explains what happens to information when you use it.
To show genome data, Locus sends requests directly to the UCSC Genome Browser (genome.ucsc.edu and api.genome.ucsc.edu), run by the University of California, Santa Cruz. Depending on what you do, these requests include:
Like any website, UCSC receives your device’s IP address with each request. UCSC handles this information under its own policies, described in the UCSC Genome Browser conditions of use. Locus doesn’t send this information anywhere else.
Locus saves the following on your device so it can pick up where you left off and work with a poor connection:
None of this leaves your device unless you choose to send it, as described below. ••• → About & Help → Erase app data deletes all of it, including the Keychain items that iOS otherwise keeps after an app is deleted.
If you contact support from the app, Locus opens an email that includes your app version, iOS version, and device model. If the app has crashed recently, it asks whether to attach the saved crash reports. Those reports describe where the app failed. They contain no genomic data or personal information. You can review the email and change or remove anything before sending it. I use what you send only to answer your request and fix problems.
If you’ve turned on Share With App Developers in iOS Settings → Privacy & Security → Analytics & Improvements, Apple may also share crash reports and usage statistics with me. Apple controls that setting and the data it includes.
Locus is a scientific reference tool. It isn’t directed at children and doesn’t knowingly collect information from anyone.
If this policy changes, the new version will be posted on this page with a new effective date.
Questions about this policy: locus.genome.app@gmail.com.