I'd love to make use of this in various open source projects but as far as I know the Mozilla Public Licence has the same problem as LGPL if you ever want to build for Android or iOS.

You can't mingle MPL/LGPL code with non-copyleft code unless it compiles to a separate binary.

And on iOS/Android - you're forced to have a single signed binary for distribution on the official stores.

Have I misunderstood? I would like to use it in conjunction with Apache licenced code. It feels like I'd be complying with the spirit but not the letter of the licence.