Yes and no. I made my own Numbers spreadsheet based on a BBM template, but I only use it to record the lifts, didn’t adapt all the graphs, calculators, etc.
it works great for entering data on my phone and having it sync everywhere, but I still enter the data into the original BBM file in Excel so I can see the nice graphs. I also manually put everything into strengthlevel.com, figuring that I can export the data from there into a spreadsheet and track my lifting history across multiple programs.