I have a cross-platform device lab for testing web and mobile apps. Who could put it to use?

What are the sort of businesses you find could benefit most from your services? Also, partnering up with website developers and designers can be a good idea, there are quire a few on the site

for example, can partner up

Indie devs and small agencies get bounced by App Store and Play review for things that only show up on a real device: a login that breaks on iPad, a screen that clips on a small Android. A fixed-price pre-submission pass (one build, your iOS, Android and TV setup, a short screen recording per bug) is easy to buy and easy to explain. Another angle: more and more code is written by AI agents now, and someone has to check it on real hardware before it ships. I run agents that test on phones and tablets sitting next to them, so I can tell you that part is real demand. I attached my post in case it helps to compare notes.

Have you considered offering a 'we'll try to break your app in 24 hours' service before launch? And only if you can break it, you get paid. If you can't break anything it's complementary.