No, not at all. Security is an ongoing process of system design, nothing that the App Store can offer. iOS is designed with an aggressive sandboxing model with very strict permissions for accessing privacy-impacting APIs. The App Store, additionally, does include all sorts of scamware that was let through the screening process.
Apps on iOS are strictly user space. They cannot run at a kernel level, which was the issue with CloudStrike. An oversight in CloudStrike's software, which assumed a downloaded file would never be in a broken state, prevented the system from booting.
Technically, Microsoft requires approval for software that runs at the level of CloudStrike. So, clearly, a review process is not sufficient to prevent that issue either.
Apps on iOS are strictly user space. They cannot run at a kernel level, which was the issue with CloudStrike. An oversight in CloudStrike's software, which assumed a downloaded file would never be in a broken state, prevented the system from booting.
Technically, Microsoft requires approval for software that runs at the level of CloudStrike. So, clearly, a review process is not sufficient to prevent that issue either.