AltStore uses Apple’s own developer certificate infrastructure. When you log in with your Apple ID, AltStore requests a temporary provisioning profile from Apple’s servers. This profile is tied to your Apple ID, your device’s unique identifier (UDID), and the app’s bundle ID. AltStore then uses that profile to “re‑sign” any IPA file you provide, turning it into an app that iOS trusts and will launch.

: AltStore will communicate with AltServer on your computer to sign and sideload the app. Once finished, it will appear in your "My Apps" list and on your home screen. 3. Maintenance: The 7-Day Limit Apps sideloaded with a free Apple ID expire every To Refresh "Refresh All"

If prompted on your mobile device, tap and enter your passcode.

Download the IPA file you want to install using Safari on your iPhone or iPad. Ensure you obtain files from trustworthy, reputable repositories. 2. Open the IPA in AltStore There are two ways to import the file into AltStore:

Enter your Apple ID email and password when prompted.

Extract the ZIP file, double-click Setup.exe , and follow the installation prompts.

A Mac running macOS 10.14.4 or later, or a PC running Windows 10 or 11.

(iOS 16+ Only) Go to > Privacy & Security , scroll down to Developer Mode , turn it on, and restart your device. Step 4: How to Install IPA Files Using AltStore

Let me know which app you are trying to install and your device details! I can also help you: Find popular open-source IPA repositories Fix specific AltServer connection issues

Wait a few moments. A notification will appear on your computer stating that AltStore is installing. Within a minute, the AltStore icon will appear on your iOS home screen. Trusting the Developer Profile

You cannot install IPA files until the AltStore app itself is on your phone.

To prevent this, AltStore automatically attempts to refresh your apps in the background when you are on the same Wi-Fi network as your computer running AltServer. Manual Refreshing:

To connect your iOS device to your computer.