Editor's Review
Ostentus Apps files AI Security under Productivity rather than Tools, and the Play listing keeps its description broad, so it is worth being precise about what is and is not established. The app has passed 10M+ installs at a 3.96 rating and ships an iOS build as well, which puts it some distance ahead of the many short-lived security utilities that appear on the store and vanish a year later.
Software in this bracket typically bundles device-hygiene functions: reviewing which apps hold sensitive permissions, locking individual apps behind a PIN, flagging risky networks, and clearing traces of activity. Read the current store description and the permission list before you install, because that is the only dependable guide to which of these this particular app performs and what data it wants in order to do so.
One point applies across the whole category. A security tool asks for wide access to your device by design. Grant it only if the developer's privacy policy satisfies you, and stay skeptical of any free tool requesting more access than its stated function needs.
Features
Privacy and device security utilities gathered into one app
Free to install, with no purchase required up front
A companion iOS release from the same developer
An install base above 10 million on Android alone
Pros
A large install base and a 3.96 rating, both unusual for a small security utility
Costs nothing to try and uninstall
Cons
The store listing is vague about which specific protections are included
Security tools ask for broad device permissions, which deserve review before you grant them
Ostentus Apps has little public track record to judge the developer by
