⭐️⭐️⭐️⭐️⭐️ Very useful. - Does exactly as described. Very useful if you are aiming an outdoor antenna, especially on a roof or similar. Gives data that is all in one place and not easily found with other software. Kinda stings to buy an app that you only really need once or twice. Would be ok with ads built in to make it free as nobody needs an app like this very frequently.
I think this idea deserves a response.
I don't like apps with ads in them. As a consumer of apps, I don't download ad supported apps. I don't like the contortions ad support brings to an apps layout, and the lengths it drives developers to get more views. So, I'm not inclined to use ads just on principle.
And even if I were so inclined. A little research indicates that a good ad rate would be $4 per 1000 ad views, or .4 pennies per view. Let's say that I could prolong the antenna pointing session long enough to squeeze 10 views out of my users, that would be 4¢ per user. Maybe, if I did a poor job in the first session, I could rake them back in for a second, so 8¢. I make $2.10 from a sale of Signal GH, and with that I'm far away from quit my day job territory, or even pay for my computer hardware territory. Nor is there a universe out there with 40 users for the app that will download a free version for every 1 that would pay for it, and if there were, how would I be able to respond to any tech support they needed?
Meanwhile my users have paid $100 for a decent antenna, $90-200 for an HDHomerun, plus cables, a pre-amp, connectors, paddle bits, drills, masts, grounding wires, and a TV. All of these cost more than the $2.99 they pay Apple for my app, and ending with a set up that will deliver free (ad supported) content for years.
So, no, I will not be moving to an ad supported model.