What 4.3 means, and what obfuscation can do
Guideline 4.3 is Apple's "Spam" rule. Reviewers reject apps that look like copies: same screenshots, same metadata, same binary layout, or the same product dressed as a new listing. Teams often meet 4.3 when they resubmit an older title, ship a second bundle for a similar business, or rebuild an app that was removed earlier.
What usually triggers 4.3
Metadata and store assets are the first layer. Identical or near-identical names, subtitles, descriptions, and screenshots are easy to match. The second layer is the binary: class names, selector strings, resource file names, and call-stack shapes that stay stable across builds. A clean rebuild that only changes version numbers rarely changes those fingerprints.
What to check before you obfuscate
Compare the rejected build with any live or previously rejected sibling. Look at screenshots, preview video, support URL, and in-app copy. Confirm the product is not presenting the same UI as another listing you already own. If the business is legitimately different, you still need the binary and resources to stop looking like a clone. See the longer checklist in How to self-check after a 4.3 rejection.
What Crab changes at build time
Crab iOS Obfuscation works from the compilation system, not by asking you to rewrite source by hand. It covers C, C++, Objective-C, Swift, and Dart, including Unity, Flutter, SwiftUI, and Cocos exports. Language-level renaming, call-stack obfuscation, resource renaming/encryption, and an isolated runtime SDK give each packaged app a separate characteristic set. After a successful archive you can submit. We do not promise App Review outcomes; the app still has to comply with the rest of the guidelines.
If you cannot submit the listing yourself
If you cannot handle App Store Connect, certificates, or review replies, use the App Submission Service: a specialist team submits the obfuscated app, with no fee if the review fails. Pricing is quoted via the homepage chat.
Next steps
If 4.3 arrived with 2.3.1 language about hidden features or misleading information, read the 2.3.1 page as well. Unity and Flutter projects have extra export steps on their own pages. Full operator docs live at crab-ios.com/docs/site.
Request a trial, then archive and submit
Download App Center, choose the General or Uni-app edition, then apply for a license on the registration-code page. The docs cover the operator steps.