Gamma vs ScePSX

Gamma is a PlayStation 1 emulator for iOS, iPadOS, and macOS. It supports touch and gamepad controls, save states, screenshots, game importing, and games that span multiple discs. For 3D games, the App Store listing describes enhanced resolution up to 8× and widescreen options. Supported disc images include BIN/CUE, CHD, PBP, ISO, and MDS; archive formats include 7zip, ZIP, RAR, and ECM. Cheat support and RetroAchievements are also listed. Optional Gamma Sync can connect Google Drive or Dropbox to store and retrieve selected emulator data. Games, BIOS files, memory cards, save states, and controller skins normally remain on the device unless a selected feature transmits them, such as Sync or a community submission. Gamma does not include commercial PlayStation games or proprietary PlayStation BIOS files, so users are responsible for using content they have a legal right to use. It is free to download and use, though the free version may show advertising through Appodeal and its partners. Gamma Pro – Remove Ads is listed for $4.99.

ScePSX is a free, MIT-licensed PlayStation 1 emulator written in C#. It runs on Windows, Linux, macOS, and Android; Android requires version 5.0 or later, with 9.0 or later recommended. Users can save and load progress, manage multiple save files, use cheats, edit and search memory, and play online multiplayer. Supported game image formats include .bin/.cue, .img/.cue, .iso, and .chd. The emulator supports D2D, D3D, OpenGL, and Vulkan renderers, which can be switched dynamically. Hardware backends support output up to 4K, while the software backend offers xBR and JINC upscaling. PGXP geometry enhancement works on software and hardware backends and can be adjusted without restarting; ReShade effects work on D3D, OpenGL, and Vulkan. Controllers are described as plug-and-play, and keyboard bindings can be customized. ScePSX does not include BIOS files, so users must provide one. Optional GameDB and ControllerDB downloads are listed, and the project accepts bug reports, suggestions, and contributions through GitHub.