For Android I’d only trust the direct from the developer’s own site. That APK is the official one, and it runs smoothly without all the junk you find on mirrors. It has the same features as the browser version—demo mode, fast payouts, difficulty settings—but it’s optimized for long sessions and doesn’t lag. I installed it this way, and withdrawals still worked within a few hours after KYC. If you’re on iOS, the mobile site is the alternative since there isn’t an App Store version. Bottom line: don’t grab random APKs, stick to the verified source.