GameCore

GameCore is a gaming overlay, performance monitor, and per-game profile manager for Android — built on the rule that every number it shows is one Android actually reported.

Live system readouts

See CPU load and core count, RAM usage, battery level and charge state, CPU temperature, current panel refresh rate, display resolution and DPI, and free storage — all on one home screen, refreshed continuously while you play.

Per-game profiles

Set up a profile for any installed game and GameCore applies it automatically when the game launches, then reverts everything the moment it closes. Profiles can control:

Refresh rate (with automatic verification — if a chipset accepts a rate change but silently ignores it, GameCore reads the panel back and tells you)

Display size, including standard aspect presets or a custom width/height override

Orientation lock

Screen timeout

Colour correction

Nothing here fakes a wider field of view — a resolution override reshapes the picture to fit the panel, it doesn't let a game see more of the world, and GameCore is upfront about that in the app itself.

In-game overlays

A floating stats pill and a floating control button can sit over any game, plus a configurable crosshair (design, size, colour, thickness, rotation, and placement) and a drag-and-drop HUD layout system, with a separate layout savable per game. All overlay features require the "display over other apps" permission, and GameCore tells you plainly when that hasn't been granted yet instead of pretending the feature is on.

Session history

Every play session can be logged with the readings actually captured while it ran — CPU, memory, temperature, refresh rate, and latency — on an adjustable sampling interval. Short sessions (likely accidental taps) prompt before being discarded.

Automation & control

Automatic profile application (needs usage access — with it off, profiles only apply when you start them yourself)

Keep-screen-on while a profiled game is in front

Configurable interval for checking what's currently in the foreground

A "never close" list for apps you don't want killed when a profile frees memory on launch

Optional background monitoring service (the one setting that costs battery on its own, clearly labeled as such)

Optional Shizuku integration for elevated-access readings Android won't hand to an ordinary app — this is read-only for stats, doesn't disconnect if you turn related settings off, and never touches thermal limits, because no app can safely override those

Built on honesty, not guesswork

GameCore doesn't fabricate FPS counters or invent optimization claims your hardware can't actually deliver. Every stat is either read from Android directly or, where elevated access is available via Shizuku, read from the deeper figures Android normally withholds — never estimated or dramatized.