The program is very organized and simple to use. It is also very user friendly. I have not used the mobile app yet but I am sure it is also as good or better than the web version. I like all the different tabs. I like that I can use it for all my clients. It also helps me be more organized with my time. It doesn't update the time on my bill until the next day so I also have to pull it in and see how much time I am really spending there. I think this is a great product. There really does not anything to dislike. It helps me stay organized with my time. I also can see how much time is spent on each site. It also helps me keep track of my employees. This helps me to keep everyone on track when it comes to billing clients as well. The best part about limms is that it can be used for multiple companies, which makes using one account easy! It's not very user friendly when you have more than 1 client at once so I would recommend having two accounts set up if your business has muliple clients (which we do). We use Limmys as our billing software but also keep all of my invoices directly inside this program too because they're easier/more organized there rather then spreadsheets or other programs like Quickbooks Online etc..