Storefronts last tested between 2022-12-05 and 2025-04-04. Simplex Spelling Phonics 1 was tested in 6 Apple App Store storefronts — available in 5; unavailable in 1 (China mainland).Roughly 1.4 billion people live in the 1 storefront where it is unavailable. App unavailability does not by itself prove censorship.