Any chance you could get the mobile app not lose its cache when 'closed' (or rather 'crashed'/'restarted')?

At the moment, offline support works fine unless the app closes or crashes, at which point it loses all of its data until next connect.

I'd love to use this app frequently and for data I need constant access to, but have a nightmare scenario of it losing its cache just as I walk into a room without internet (London Tube, many offices, ...).

Totally happy for better offline support to go in a paid plan. :)