Storefronts last tested between 2025-02-24 and 2026-02-22. 单机游戏® - 天天象棋大师残局教学 was tested in 5 Apple App Store storefronts — available in 4; 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.