Have you seen this infomercial?
Had not previously but watched it through.
It probably works. But not universally.
Size suggests it's designed for UHF but not VHF. In many markets that's OK because all the stations migrated to UHF but not in all markets where there are still VHFs.
The ad also suggests you can just hang the antenna on the wall. Which is true IF the wall is oriented in such a way that the flat antenna is broadside to the direction toward the TV station. If all the stations are on a common (or close together) site(s) then, cool. If not, it'll have to be moved around for best signal.
Here's a non-governmental website that'll help with figuring out what might work for you:
AntennaPoint.com - Antenna Locator
The "rf channel" is the actual channel on which the station is broadcasting. If it's higher than 13 it's a UHF. 13 or lower it's VHF. The "virtual channel" is the number your TV will tell you it's seeing. Most digital TVs can be put in a manual channel-finding mode as well as full automatic. Automatic is OK but can't move an antenna round (sounds silly, I know) so it will recognize only stations whose towers it's pointed toward and may not get enough signal to latch on to many others.
If you're going to use the manual mode use the website above to determine what stations you SHOULD get and point the antenna broadside to the direction toward the greatest number or those you want most. Then you can specify each channel and, watching the signal strength display, twist the antenna around for best reception. You may find you have to reorient the antenna for best results when you change channels. That's why motorized rotors are nice for outdoor antenna installations.
Thing is, a lot of Americans aren't watching broadcast TV anymore - rather are watching stuff that's only on cable. For now. But the day is coming when there'll be internet services which allow you to pay for ONLY the channels you want. Stations and networks are fighting it tooth and nail but they WILL lose. Just a question of when.
Right now I have cable and decent broadcast reception of about four channels (rural area). I'm watching about 25% direct off-air pickup (some channels are duplicated on cable but the broadcast picture is better), 30-40% cable-only and the rest using an Apple TV internet adapter. The cable portion is slowly dwindling as more internet service grows.
BTW, that broadcast reception (4 channels) is with an indoor set of amplified rabbit ears. If I put up a 40-foot mast with a big rotatable antenna I'd increase that number to 6 at best and neither of the two I'd acquire have any programming that interests me.
Big changes ARE coming. Probably TV by internet predominating. Right now I don't see any need for any congressional action to make any of it happen but I can think of scenarios where cable companies may come up with some nasty innovations that might have to be reined in. I think existing laws would cover it but only if we had a government interested in enforcing those laws instead of just piling on new ones.