To install Nulls Brawl on iOS, you must use a third-party app installer like AltStore or <a href="https://scarletioshub.com/">Scarlet Direct Install</a> since it's not available in the App Store. Download the IPA file from the official Nulls Brawl site, then sideload it using the installer. No jailbreak required, but be sure to trust the developer profile in Settings first!