The In-Browser IPA Signer is a secure system that allows you to sign and install iOS apps (IPA files) directly from your account's orders section, without downloading or handling Apple developer certificate files.
In the past, app signing often required users to download certificate files (.p12, .mobileprovision) and sign apps locally via ESign or GBox. While this worked, it introduced serious long-term risks. Apple has increasingly tightened enforcement around certificate usage, and shared certificates are now revoked more frequently and often without warning. When certificate files are distributed to users, the users don't change bundle ids and use proper dns (sometimes unintentionally) which increases the chance of revocation for everyone using that certificate.
To address this, the in-browser signer was created with security, stability, and longevity as the primary goals.
With this system:
Certificate files are never shared or downloaded
All signing happens securely on our servers
Each signing action is tied to your authenticated account
The risk of certificate leakage is significantly reduced
From a user perspective, the experience is also simpler. Instead of managing certificates or external tools, you just upload your IPA, select your device, and sign the app directly in your browser. No technical knowledge is required.
A daily signing limit is enforced to prevent abuse and further reduce revocation risk. This limit automatically resets each day and is visible in your account's signer, so you always know how many signings you have used and when the next reset occurs. You can also view your signing history for transparency and tracking.
It’s important to be transparent: Apple ultimately controls certificate revocations, and no system can guarantee zero revokes. However, compared to traditional downloadable certificate models, the in-browser signer follows best practices by automatically changing the bundle ids of apps and limit the number of apps signed by users per day and offers far better protection against accidental misuse and mass revocations.
In short, the In-Browser IPA Signer exists to:
Protect developer certificates
Reduce sudden revocations
Eliminate unsafe file sharing
Provide a cleaner, safer, and more reliable signing experience
This approach is designed not just for convenience today, but for long-term sustainability in an environment where Apple’s restrictions continue to increase.