Update: As per the comment from AI Austin below, those who have previously purchased Pocket Metaverse can currently still update the the latest version / obtain a replacement version through iTunes.
Pocket Metaverse has been a text-based client available for iPad and iPhone users to access Second Life and engage with friends through chat and IM, manage inventory, teleport, make payments, etc.
It was last updated on September 8th, 2015, ostensibly providing compatibility with iOS 9, although in the process, this appeared to break support for iOS 7 and 8.
During November the download page for Pocket Metaverse vanished from Apple’s app listings on the iTunes store and so is no longer available to those wishing to download it for the first time, a fact more widely noted earlier in December. While the dedicated web site for the application remains live, searches of iTunes still fail to yield any results.
While the application may have vanished from iTunes, I understand existing versions are still working in-world (with the possible issue of version 1.9.4 not supporting iOS 7 or 8); however, as I am not an Apple user, I cannot verify this.
I’ve attempted to contact the developer of Pocket Metaverse, Edward Magic, both in-world and via e-mail during the last couple of weeks, to try to ascertain news on the application’s overall status, but have yet to receive any response (Edward doesn’t appear to have logged-in to SL since June 2013, although as noted, the application has continued to be updated through until September 2015). Should I receive a response I will update this article.