Globally a great app. Easy and precise, itll make any architects or surveyors work so much easier. The one reason I didnt put in that 5th star is that it doesnt work with iCloud. It has its own cloud but itll cost you extra. This means that if you have several idevices, the measures you make will stay completely isolated on each device. I can understand the reason to pay for group sharing, but I just cannot understand the reason for not using iCloud just for the username which bought the app. This is the only problem with this app, but its unfortunately a slight deal breaker for those with an iPhone and an iPad for example. Shame.