If you are a long-time iPhone user and an iOS-lover like me, I am sure you are going to love this app I discovered recently. An 18-year old software developer has recreated the iOS 4 operating system as an app for iPhone users to take them for a nostalgic trip to the past. The developer revived the 10-year-old OS for the love of iOS and nostalgia.

Today is Launch Day 🚀

— Zane (@zzanehip) June 9, 2021

Nonetheless, if you are a fan of iOS and want to experience iOS 4 on your current iPhone, you can surely check out OldOS. I am sure you won’t be disappointed. The app is currently available on Apple’s TestFlight service, which is usually used to distribute unreleased beta versions of various apps. The beta program is, however, full at the moment.