Better than no arbiter at all. By that I mean not checking official sources at all.
Flysafe database often includes TFRs if the TFR is published far enough in advance. I'm sure many of us are guilty of overlooking those. I don't think Airmap or Kittyhawk account for those.
I can't say for Airmap but Kittyhawk definitely DOES! Unfortunately it's a "Layer" that can be turned OFF but by default TFR's are ON. Kittyhawk does a great job of giving the UAS operator more than enough information to make a Go, No-Go decision fairly quickly and easily.
Understanding TFRs & UAS Operations Aloft
Kittyhawk provides the different types of TFRs, how TFRs affect drone operations, & how to minimize inconvenience while flying safely & compliantly.
kittyhawk.io