A server platform that lets you self-host multiple applications, intended to maximize freedom and privacy. Based mostly around Nextcloud, but the mobile app seems to do more, like Ethercalc.
Crostini, Crouton, and ARC Welder (Linux and Android environments)
WHERE® helps you find local info around you. Download the WHERE® app on iPhone, Android, BlackBerry, Palm Pre and other mobile phones.
Couldn't you just do this by sending video in a DM with Instagram or something? Maybe I could recreate it with something self-hosted, with email notification.
RCS is planned for the future, but awaiting more public API support.
Looks like Uptodown and Amazon are worth trying.
Can Google Authenticator on a phone require or unlock with an NFC key at all?
$5/month as of 2023
works with EtherCalc in a sandbox with authentication