OneStat Basic is in version 4.34 now and every update makes it better. At the free level you do see a lot of advertising for their other products but the professional display and interface make it just like checking your free email. My favorite thing about OneStat is the ease of set up and the ease of creating email reports weekly or monthly with whatever analytical overview you want.
Overall the OneStat offering is professional, fast and not as clunky as most of the other free site tracking providers and another big difference is the extra attention to detail in the user interface. It’s easy to click on Settings and block your IP from registering as a visit. It’s easy to add domains, account options and scripts. Another really great feature is the Events feature which allows you to add notes to any and all reports, data which is captured in future reporting (so you can remember why certain things happened or why certain days were busier than others. It’s free site tracking at its best.