It is good, but it is not completely free, as I need to log in to check some pairs.
The number of listed currencies is reasonable, but relatively small, as there are about 23 added currencies.
Most of the listed coins are stable and there are no significant differences between them.

For future development, the tool needs to include more rankings and facilitate search options.
The expansion in adding more currencies may give this tool an advantage, but it is somewhat good.