HBM is an app now.

Mine from your phone. Its GPU runs the same Proof of Memory test as a desktop, and every verified run pays $0.02 of NVIDIA stock straight to your wallet.

Download for Android (APK)Run the test

Stock rewards are not available in the US.

Install

Android

Open www.hbmrwa.xyz in Chrome.
Tap Install the app, or Add to Home screen in the browser menu.
Open HBM from your home screen and tap Prove your memory.

Download for Android (APK)

When Android asks, allow installs from your browser.

Version: 1.0.0, 2.6 MB, Android 7.0 or later
SHA-256: be8c785f3245e4284865ae257592218e1c5656b1e01ec2a570caa27261752aff

iPhone and iPad

Update to iOS 26 or later. Earlier versions have no WebGPU.
Open www.hbmrwa.xyz in Safari.
Tap Share, then Add to Home Screen.

A phone run

About a minute: The GPU streams a working set through memory that is sized for a phone and still larger than every cache on the chip.
Ranked with its twins: Android phones rank by GPU, such as Adreno 750. iOS hides the chip, so iPhones rank together, as do iPads.
Verified, then paid: A plausible run is verified and pays $0.02 of NVIDIA stock to the wallet you link.
Keep it in front: Screen on, app open, ideally plugged in. A hidden or throttled run can still count, but scores lower.