Go to your phone’s Settings > Security (or Privacy) and enable "Unknown Sources." This allows you to install apps outside the Play Store.
You will see a clearly marked button for the (usually an Android logo). Tap the button. A pop-up might appear asking if you want to download the file. Confirm by tapping Download . The .apk file will begin transferring to your device.
Go to the Apple App Store and search for "Captain’s Bet."