I found your e-mail address on the screenshots of Angexis Outdoor on your blog ;-)
First off, let me tell you that I am very pleased that you like this app and very honored that it appears on day #1 on the 7 days of Android!
This afternoon, I have added a comment, and either I did a mistake (and never posted the comment), or you decided to hide it (which is your right!). I just wanted to double-check that you understood my comment and understand why the the app needs the mobile data network... so that your readers are not mislead.
Also, since you compared it with SPOT: the main difference (beside the price) is that SPOT will likely never send a false alert, since it is manual, but on the down side, it will never send an alert if you are unconscious. Also, SPOT will continue working if you are in mobile-deserts with no coverage at all.
Angexis Outdoor will work in most cases (except in such "deserts" since it needs to "check-in" on a regular basis with the web site)... the downside is that it might send false alerts in some cases (e.g. you lose your phone, it gets broken, you run out of battery, you reboot your phone and forget to stop the app first...).
Hope this clarifies. If you have any additional question, please let me know!
And the comment:
Glad you liked that app... and hope you'll like it even more now that alerts can be sent by SMS.
Just one comment though : even with the SMS feature now, the app still needs (and will need) the mobile network.
The reason is that it is necessary for the app to regularly tell the web site the user's position. If it did not work this way, it would not be very reliable because if an accident occurred out of mobile coverage, it would not be able to send any alert any longer, and the web site would have no clue where the user could well be...
The drawback is the impact on the battery of course...
Hope this clarifies !"
So a nice bit of clarification on why Angexis Outdoor uses the Mobile network, great of Jan to take the time to comment on the software, great App guys, really like it!
Angexis Outdoor is available on the Play Store https://play.google.com/store/apps/details?id=com.angexis.outdoor