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One official app
However you type the name in search - 888stars, 888 stars or stars 888 - there is one official app: 888starz from the developer Bittech B.V. On Android it downloads as an APK from the official link because the app is not published in Google Play in Egypt, and it runs on Android 7.0 or later. The original APK is free and asks only for the unknown-sources permission for your browser on install.
How to spot a copied file
“888stars apk” files on file sites and Telegram groups may be outdated or modified copies. Warning signs: it asks for odd permissions on install such as reading messages or contacts; it asks for payment to download or “activate the version”; it carries a different name or icon after installing; or it asks you to disable Play Protect. If you see any of these, delete the file and download from the official link.
On iPhone
On iPhone it is simpler: the official app is in the Egyptian App Store as “888Starz: Sports Betting” by Bittech B.V., for iOS 15 or later, rated 3.8 of 5. You need no files and no TestFlight - and any “888stars for iPhone” file from outside the store is not official. For the correct name and the signs of the real site, see the main page.