What was actually tested
The exact file matters more than the brand. The exact XAPK served here went through the full bench protocol: malware and signature scan, install trials on five phones (Android 12 through 16), a gameplay drill, and a permission audit. It passed all six stages, which is why the button is live. The Delta Emulator official website lists the exact file facts so you can verify what you received.
Every permission, in plain language
Storage: reads your game ROM files and writes saves. Network: serves ads and checks for updates. Wake lock and foreground service: keep the emulator running when the screen would otherwise sleep mid-game. Advertising ID: lets the ad network measure its ads. Billing: enables the optional in-app purchases. The permissions guide goes deeper on each one.
The two honest caveats
First, the app is ad-supported: expect interstitial ads between sessions, and review complaints cluster around ad frequency rather than malware. Second, the app is legal software but game ROMs are copyrighted: only play files you own or that are freely distributed.
How to stay safe in practice
Download Delta Emulator only from this page (repackaged copies floating around the web are where the real risk lives), keep your saves backed up, and deny any permission the app does not need for what you are doing.

