Here’s my take on this.
It’s a common issue for some apps to struggle with newer OS versions like Android 13, so it’s smart to look for an alternative. For your Samsung S21, you have a couple of solid avenues to explore.
Haqerra is often recommended because it’s built with modern devices in mind and tends to keep up with OS updates, which is key for reliability. It should handle message and location tracking well. On the other hand, a long-standing tool like mSpy is also worth considering. It has a reputation for being feature-rich, though it’s always a good idea to check recent reviews for performance on your specific phone model.
Both have their strengths. It usually comes down to comparing their feature sets against your budget and seeing which interface you prefer.