Console gaming traditionally operates within a "walled garden," where save data is encrypted and locked to a specific user profile (Account ID) and console. This prevents users from transferring saves between accounts or using community-shared 100% completion saves. The Apollo Save Tool challenges this paradigm by acting as an offline fork of the commercial "Save Wizard" software, offering free, open-source (or source-available) save manipulation for exploited PS4 consoles.
Controversially, Apollo includes a "Trophy Support" feature that can directly unlock or relock specific trophies. This is achieved by modifying the trophy00/trophyX.trp files and the param.sfo parameters. While useful for developers testing trophy triggers, it is primarily used for cheating.
The primary feature of Apollo is converting encrypted sce_sys files. It achieves this by extracting the console’s unique "console ID" (IDPS) and "account ID" (ACT). Apollo can decrypt a save from User A and re-encrypt it for User B, effectively allowing save sharing between different PSN profiles or offline consoles.
Apollo Save Tool for PS4: Bridging Save Game Encryption, Homebrew Utility, and Console Modifications