There are many differences, but the main ones are that it has less overhead when profiling, more thorough analysis features (Heaptrack's GUI is relatively simple compared to it), and the next version will have scripting capabilities for analysis.
Hmm, took a look (it's called Bytehound now), it has no PKGBUILD nor a `cargo install` crate so I can't install it in systemwide or user PATH, and requires Yarn to download and build JS dependencies (likely hundreds or thousands).
I tried `cargo install --git https://github.com/koute/bytehound.git`, but that results in "error: multiple packages with binaries found: bytehound-cli, bytehound-gather, interrupt, linking, lz4-compress, simulation".