OneCal is a reliable and simple solution to Calendar syncing. It handles integration with Microsoft 365 and Apple Calendar pretty well. I like it because it let's me have personal Apple Calendar events block out time on my work calendar. Having my work calendar reflect my actual availability without including personal details is important to me, and OneCal does the trick. The pricing is a little bit high for my use case, but worth it to me. The UI is a little frustrating sometimes, and I would not use their native calendar view as my default calendaring app. It can be a little slow, but this is understandable. I also appreciate the extra features like booking links, which are much more polished than Microsoft Booking. Review collected by and hosted on G2.com.

I don't have any real frustrations with OneCal. The UI could be improved a little, and their native calendar app could be a little more feature rich and responsive, but this is not my use case anyway. Review collected by and hosted on G2.com.