We're happy to help! Most questions are answered below.
Open the app and tap "Unlock Everything" on the unlock screen (a grown-up needs to answer the parental gate question first). One single $4.99 purchase unlocks all 24 pages and every tool, forever — no subscription.
On the unlock screen (or in "For Grown-Ups" in the top corner of the library), tap Restore Purchases. Make sure you're signed in with the same Apple Account used for the original purchase.
On any coloring page, tap the share button in the top corner. After the parental gate, you can save the picture to Photos or share it with family.
No — everything works fully offline after download. Internet is only needed for the one-time purchase or restore.