Using the official demo is the only safe way to evaluate the software for free.
Suggest like Ghidra or Radare2. Explain how to verify the safety of a software download.
Hopper Disassembler v4 is a popular, professional-grade reverse engineering tool for macOS, and it is [Hopper Disassembler website]. It is a paid application created by Cryptic Apps.
If you need the full, unrestricted software, you can buy a license directly from the official Hopper Disassembler store.
Compare the features of the free vs. the paid version .