As techie-talk goes, your post-Quantum messenger app has to be up there with the best of them. Well, PQchat creators SRD Wireless are touting it as just that, and as a secure alternative to the likes of WhatsApp and Snapchat.

Using the McEliece cryptosystem, the strongest currently known security system out there according to the makers and SRD'sown Never The Same encryption for security, which means that every sent message has a different encrypted output, you're left in little doubt as to how under wraps your messaging activity is.

Users have full control over their own communications, from deleting or protecting sent messagesto being responsible for user-created master passwords, while the app itself doesn't store message contents, master passwords or personal information. If you're particularly security-conscious, then, this could be worth a look over at Apple's App Store (an Android version is on the way, apparently).