My company used Parse for a big project which involved web and an app in Android. It was going pretty well until more than 20 users started to test it at the same time. Then it started to crash, did not save data and threw a lot of errors caused by its limits. Most of the time it didn't save the data as we expected and didn't even throw an error claiming over query limit.
I strongly don't recommend Parse. It's good for a prototype and nothing more.