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This makes one of the few Bitcoin/Nostr-centric applications on iOS, and likely the only fully self-custodial Lightning wallet to bypass the App Store without resorting to a limited PWA (no disrespect to Mutiny). Getting this achieved is significant, considering a certain client developer (cough, cough) claimed first that it was impossible, then deflected after being shown the possibility of it being done with "most people won't know how to do that."
I respect the hell out of Evan for not underestimating the intelligence of his userbase, and embracing that fact that (even unofficially, outside the EU) sideloading is technically possible on iOS; acknowledgement that iOS is not good for true freedom or privacy is a given, but this is more than most Apple developers who claim to dislike their restrictive practices will ever do.
Big ups to ZEUS, let's hope more freedom builders on iOS go the Alt/SideStore route.