Is there a Bitcoin mining app to download from a store?

No store build. On Android, and on desktop Chrome or Edge, the browser offers to install Hashstream after you use the site, and Install is also in the browser menu. On iPhone and iPad, use Share, then Add to Home Screen.

Can I control ASIC miners from the phone?

The phone shows the same readings as the desk. A power or firmware command still depends on that miner's firmware, credentials, and protocol. The phone does not add a control the desk does not have.

Does the Sonar report show up on the phone?

Yes. Start a watch, keep walking, and read the summary when the window ends. Sonar observes. It does not change power or firmware.

Bitcoin Mining Fleet App for Your Phone

Bitcoin mining fleet app for your phone: ASIC status, hashrate, the site map, and Sonar. Install Hashstream from the browser. No app store.