Apps similar to FadCrypt include Cisdem AppCrypt. Other options are Lockish and PresenceLock. In total there are three Parental Control Tools like FadCrypt for Mac, Windows, Android, iPhone and iPad.
Cisdem AppCrypt locks apps and blocks websites on Mac, Windows, iPhone, and Android. It's easy to use with a simple interface. App locking and website blocking can be active permanently or scheduled for specific times.
Lockish protects individual macOS applications with Touch ID or password authentication. Protected apps lock automatically after a configurable per-app idle timeout, when the Mac sleeps, or when the screen locks, while the rest of the system stays fully usable.
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PresenceLock puts a password on individual Windows apps, the way a phone lets you lock a single app. You choose which apps to protect - banking, mail, chat, a journal, work tools - and each one asks to be unlocked before it will open.
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