This is a continuation of #1911, since that was getting too long.

Please feel free to post new feature ideas in the comments on this issue. I would love to have some other thoughts about what should be included in this app (no guarantee that I will include them, but I will consider each idea). No idea is a bad idea here, worse case I may say that I will not include it in Trail Sense. Some features may be better suited as plugins or a different app. Plugins will allow the usage of Internet when available, but must have offline support.

Some set in stone goals of this app:

• Trail Sense must not use the Internet in any way, as I want the entire app usable when there is no Internet connection
• New features must provide some benefits to people using the app while hiking, in a survival situation, etc.
• New features must be based on peer-reviewed science
• New features must not increase the app size much (available size is dependent on feature importance). App should remain under 10 MB.

For reference, some things I have considered in the past and removed were:

• Animal behavior
  • I can't say there is enough science / supporting evidence behind Solunar theory for me to make accurate predictions of animal behavior in general, though if someone provides strong evidence I will consider it
• Heart rate sensor
  • I don't want Trail Sense to move into the medical sector, there are increased regulations on that in Google Play and not something I'm willing to provide support for.
• Decibel meter
  • This falls outside of the officially supported use cases of Trail Sense.