Digify is described as 'offers document security and virtual data rooms for securely storing and sharing business documentation'. There are four alternatives to Digify for a variety of platforms, including SaaS, Windows, Android, Android Tablet and iPad. The best alternative is SharePDF, which is free. Other great apps like Digify are Locklizard Safeguard PDF Security (Paid), ProtectPDF.io (Paid) and Vitrium Security (Paid).
Vitrium provides content security solutions and DRM that empower businesses that create, publish, or distribute proprietary, confidential or revenue-generating content. Vitrium protects and controls your videos, documents and images.