You're searching for a modded version of the Netflix app for iOS, which is typically distributed as an IPA file. This file can be sideloaded onto an iOS device using various tools, allowing users to install apps not available through the App Store.
Modifying the Netflix application is fundamentally different from apps like Spotify or YouTube. Server-Side Authentication: Netflix Mod Ios Ipa
Features like downloading movies for offline use rarely work in modified versions because they require a secure, verified handshake with Netflix’s servers. Legitimate Alternatives for Older Devices You're searching for a modded version of the