Trigraphy - Photo editing app that allows you to make mosaic/abstract looking art.

Tresorit - Encrypted cloud storage for your confidential files. Using Tresorit, files are encrypted before being uploaded to the cloud. Start encrypting files for free.

Dreamscope - Make and share 'deep dream' images using dozens of supplied styles or your own.

YourNote - Notes app that puts privacy first

Photomosh - Turn anything into a vaporwave

Cryptee - Cryptee is a safety and privacy focused, encrypted and cross-platform personal data storage service. You can write personal documents, notes, journals, store photos and all sorts of other files.