Here’s my take on this.
It’s definitely a common issue for monitoring apps to struggle with new Android versions, so I understand your frustration with Hoverwatch. When looking for alternatives, it’s about finding a balance between features and reliability.
Many people mention mSpy or uMobix as robust options. They are generally known for being comprehensive, offering stable monitoring for texts, call logs, and location on newer devices like the S21. Their feature sets are quite extensive. On the other hand, an app like Eyezy often gets mentioned for having a cleaner, more user-friendly interface, which could be a plus if you found Hoverwatch difficult to navigate.
Each has its own strengths. I’d suggest checking their official websites to confirm Android 13 compatibility and see which feature list best matches your specific needs.