Best if you have the app’s source or a signed .ipa and a macOS environment.
Let’s break down your actual options.
You pay a third-party service (e.g., Signulous, AppDB Pro, or iPASTORE) a fee (usually $20–$40 per year). They give you a configuration profile to install on your iPhone. Once installed, you can install any IPA directly from their website without a computer. install ipa file without jailbreak
Installing IPAs from unofficial sources carries inherent risks. Unlike the App Store, these files are not vetted by Apple and could contain malware. Always source your IPAs from trusted developers or verified community repositories to protect your data. Best if you have the app’s source or a signed
Some websites (like iOSNinja or Panda Helper) offer "direct install" links. These are usually enterprise-signed apps delivered via a webpage. They give you a configuration profile to install
Today, thanks to a combination of developer tools, enterprise certificates, private signing services, and EU regulations (Digital Markets Act), installing IPA files without jailbreak is not only possible but, for many users, surprisingly straightforward.