I use Ayetides, GPSRealtides, and the tide/current tables embedded in Navionics all together in that region. Sometimes, some of them are right in terms of tidal rapids. More agreement means more confidence, but still beware. Ayetides seems as good as any I have used but probably not safe as a stand-alone where the stakes are high. Also, it needs internet, which is not always available, thus the use of GPSRealtides which is pretty decent.
We are based in Campbell River, BC. We use AyeTides together with Ports and Passes. We have found AyeTides to be accurate in this area up the Broughtons and throughout Desolation Sound. If you build a library into the Favorites of the tide/current stations you will possibly use they are then available without internet access.