This morning I upgraded to the new version of ForeFlight which has geo-refferenced approach plates and taxi diagrams. My first impression is that it is really super cool, but I wouldn't rely on it. In today's test flight it accurately showed my position on taxi diagram but did NOT show a position on the DP as apparently DP's are not supported. Then it accurately showed my position on the approach plate up until the course reversal on the procedure turn... it jumped around which you can see in the video below and showed me well off my actual position which you can see on the Garmin. Following that, it accurately showed my position on an LDA approach and seemed to have no more issues going wrong. Short synopsis, think it's worth it for just $75 a year, but as always, verify! For reference I'm using a WiFi IPad 1 with the BadElf. ForeFlight was reporting 10M accuracy from the GPS...
And here's how the taxi diagrams work, you can see it's spot on in this one showing me in exact position on the 19R runway threshold...
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