(Having this app be open-source, meaning anybody can inspect its code line by line, puts me more at ease with the level of system access it requests.) I've also tried a newer competitor named Uppidy that copies texts to a password-protected page — which makes for a slightly cleaner presentation than shoveling them into an e-mailbox. But storing picture and video messages requires buying a $1.99 'Uppidy+' app, something this Washington, D.C., startup's site does not make clear. Your wireless carrier may also have solutions of its own. AT&T offers a Messages app that syncs text messages, plus voicemails and your call log, between your phone, tablet or computer. Verizon recently introduced a similar service, also named Messages — although it syncs only the last 90 days' worth of texts. What about iOS?