You must manually download and install each new APK. Outdated versions may have unpatched exploits.

Built-in App LockSecurity is integrated directly into the app. You can lock YoWhatsApp with a Fingerprint, PIN, or Pattern without needing a third-party app locker. What’s New in the 9.12 Update?

. While specific "9.12" update changelogs can vary by developer, the latest versions (such as

. However, if you are looking for the most stable and secure experience, the official is always recommended. in YoWA, or would you like a list of safe alternatives for messaging?

No. YoWhatsApp is an Android APK. iOS does not support third-party WhatsApp MODs without jailbreaking, which is not recommended.