CheatDeck vs Fling UI
CheatDeck
github.comFling UI
github.comSide by side
| Figure | CheatDeck | Fling UI |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Linux | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 0 |
| Spec score · Game Trainers | 8.3 (#3) | 7.2 (#18) |
| License | The public repository identifies its license as GPL-3.0. | The repository identifies Fling as MIT licensed. |
| Purpose | CheatDeck is a Decky Loader plugin for launching sidecar programs and managing launch options on Steam Deck. | Fling UI is a fullscreen, controller-first trainer manager for Steam and Proton on Linux. |
Plans
In their own words
CheatDeck
CheatDeck is a free, GPL-3.0 Decky Loader plugin for Steam Deck that launches sidecar programs and manages game launch options. It can start a selected .exe or .bat alongside a game in the same Proton or Wine environment, then stop it when the game exits. Its Language setting assigns one locale code to both LANG and HOST_LC_ALL. Advanced controls cover desktop behavior, FSYNC, WineD3D, compatibility-data redirection, and audio latency. Custom Options accept environment assignments, prefix commands, and arguments before or after %command%. Unsupported shell syntax or unclear launch options make a document read-only to prevent unsafe partial edits. Optional Lossless Scaling and OptiScaler presets require their corresponding Decky plugins. Installation uses Decky Loader Developer Mode and CheatDeck.zip from a release or nightly build. Some sidecars need runtime dependencies installed with protontricks.