An IPA file (iOS App Store Package) is the only way for modern users who missed the original release window to install the game.

But the mission isn’t over. In this comprehensive guide, we will explain what the is, why it is so hard to find, how to sideload it safely, and whether it is worth the effort in 2025.

Connect your iPhone to the same Wi-Fi network and link it to the computer. Halo: Spartan Strike IPA into the Sideloadly app. Enter your Settings > General > VPN & Device Management and trust the developer profile. Enable Developer Mode Settings > Privacy & Security > Developer Mode and toggle it on. Scarlet or Flex Store (No Computer)