In 2025, Appleās iOS 9.3.5 exists as a digital fossil. Released in August 2016, this version of the operating system was primarily a security patch for older 32-bit devices, namely the iPhone 4s, iPad 2, iPad 3, and the first-generation iPad mini. For users who still rely on these devices as music players, e-readers, or emergency phones, finding compatible apps in 2025 is a significant challenge. Apple and most third-party developers have moved on, leaving a curated, static list of legacy software that is no longer updated but still functional. The Core Challenge: 32-Bit Apocalypse The primary limitation for iOS 9.3.5 in 2025 is its 32-bit architecture. When Apple released iOS 11 in 2017, it officially ended support for all 32-bit apps, forcing developers to update to 64-bit. Consequently, any app updated after mid-2017 is almost certainly incompatible with iOS 9.3.5. Users cannot download the latest versions; instead, they must rely on Appleās ālast compatible versionā feature, which offers the final build of an app that worked on older iOS versions. The 2025 Compatible Apps List Despite the limitations, a core set of apps remains usable in 2025, though without security updates or cloud features: