Instead of a rare “Nukebound” mod, you can install (Geometry Dash Mod Menu) or Icon Hack via sideloading, then play any custom level including Nukebound (if the ID exists). Same sideloading steps as above, but with a more common mod IPA.
"Find a friend with an Android. Have them export the Nukebound level file, convert it to a base64 string, then paste it into an iOS notes app. Use a shortcut to rename the file and airdrop it to your iOS Geometry Dash folder. It’s hacky, but it works." Geometry Dash Nukebound Download Ios
: Once the level appears, tap the download button (the green arrow) to save it to your local device for play. Important Notes for iOS Players Instead of a rare “Nukebound” mod, you can
If the level is hosted on a Private Server (common for fan remakes): Have them export the Nukebound level file, convert
: The primary "Nukebound Event" list can be found by entering the List ID: 518574 Search for Specific Levels
To play the level or event in Geometry Dash on iOS, you do not need a separate app download; you simply need the full version of Geometry Dash installed on your device . Nukebound is an online community event and level list that can be accessed directly within the game. How to Access Nukebound on iOS