Two years ago, Snapchat pioneered the concept of ephemeral photo and video messages that disappear shortly after receipt.

Two years ago, Snapchat pioneered the concept of ephemeral photo and video messages that disappear shortly after receipt. The app has been so popular, especially among younger mobile users, that the company reportedly turned down a $3 billion acquisition offer from Facebook. Now, an array of apps are translating the concept for older people concerned about privacy and security.

Wickr uses “military-grade encryption” and lets recipients view text, photo or video messages for up to six days (vs. up to 10 seconds on Snapchat). There’s also the messaging app Gryphn, and Frankly (“Speak Freely. Speak Frankly”) includes anonymous group messaging. TigerText offers secure messaging for the enterprise and is proving popular among health care providers, as it helps them comply with patient-privacy rules. Beyond apps, SecretInk is a website where people can send emails or texts that self-destruct once read.

Image credit: Frankly