Most of the apps we cover in the Free App Friday series are either apps that you can use to have fun making music, or apps that can be used to help treat and manage disabilities. (Or a little of both). This app, however, is actually a bit more for therapists.
Jumble is an encryption app that allows you to send and receive encrypted emails from your own email account. In today's increasingly online world, there are a lot of reasons to want to be careful with your data. But for therapists, doctors, and other people in the medical field, this app can help with HIPAA compliance by making sure that client information is protected.
Jumble is free for personal use. For businesses the cost is roughly $5 a month-- pretty reasonable, and this is the easiest encryption software I've found to use. And because personal accounts are free, if I want to send an encrypted email to a client they can read it without needing to pay for their own account.
Jumble is available in a wide variety of formats and devices, so instead of giving you the whole list I will just refer you to their helpful website. They do have helpful customer service and tutorial videos in case someone struggles with the installation process.