The best thing about check in dog so far has been being able to create my own custom forms, and also how easy it was setting everything up! I dislike that they have not yet integrated with Google Calendar or Salesforce however all of these are coming soon! We use this now at our grooming business as well as boarding houses, we love having access from anywhere via mobile devices to keep track of appointments and bookings easily without any paper work needed.
I like that it's easy to use, has great customer service when you need help with anything! The only thing i dislike about this program would be some of their features are not as user friendly or intuitive than others so if your new they might make things more difficult at first but once familiarized everything flows well!! It helps keep track all our clients information in one place which makes finding them easier then having multiple spreadsheets open up simultaneously (which was my previous method).