A little while back, my spouse asked for a secure messaging app. TextSecure has a nice feature set and seemed to fit the bill, but experience as of late has shown them to have near-weekly services outages of up to an hour. They also saw fit to remote encrypted SMS from the application, so there’s no good fallback other than to… wait.
I’m curious if the Lobsters crew have any preferred alternatives. WhatsApp and Telegram come to find (the security of the latter being dubious). Are these reliable? One nice feature of TextSecure is that it also functions as an (unencrypted) SMS client, and most of the competition appears to be standalone messenger services.