These are the primary stores for jailbroken devices, offering deep customization and system-level tweaks not available elsewhere. Downloading Apps on Older iOS Versions (iOS 9 and Above)
If you are looking for an alternative marketplace to the official App Store—similar to how 9Apps serves Android—several established platforms exist for iOS:
One of the most popular and safest ways to sideload apps without a jailbreak. It uses your Apple ID to "sign" apps so they can run on your device.
If your search for "9Apps iOS" was actually to find apps for an older device (like an iPad 2 or iPhone 4S) stuck on iOS 9, you don't need a third-party store. You can often download "last compatible versions" directly from Apple: