AllShadcn

Build and grow your app business The world's best apps use RevenueCat to power purchases, manage customer data, and grow revenue on iOS, Android, and the web.

This tool allows users to add invisible watermarks to text generated by AI. It assists in identifying machine-written content to maintain authenticity and track digital assets across platforms.

Free day number and week number calculator. Calculate what day of the year it is, ISO 8601 week numbers, days between dates, and time zone-based calendars. Embeddable widgets available.