On Wednesday, August 28, 2019 at 8:56:39 AM UTC-4, krasw wrote:
WhatsApp groups used in all our comps, pics of gridlists, tasks etc. distributed smoothly to everyone (plus SoaringSpot, where you can download the task straight to devices). Printed papers available for luddites, of course, you don't want to mess with them as they just were forced into GPS-age.

I am not a Luddite, have used GPS for 20 years and LORAN before that. I have a smartphone and use IGCdroid and GliderLink. But I have a healthy suspicion of the mega-corp spyware. To repeat one of the comments quoted by Jamie to start this thread: "why not stick to the standards, SMS text messages, email, and a web page (a real web site, please not Facebook). Put downloadable documents (task sheets, weather forecasts, grid sheets, etc) on the web site. If they are suitable stand-alone files (PDF, JPG, PNG) they can be downloaded into the mobile devices for later off-line use."