YES!
Check out the documentation and start building!
Please do note that in order to gain access, you need to log in to the SensorPush web dashboard and accept the updated terms, as many of these updates specifically address the API.
Also, while we have not fully reviewed and thus cannot specifically endorse any in particular, it's worth noting that there are a range of third-party libraries and integrations for the SensorPush API available on Github and elsewhere.