Blinkist App...

Has anyone ever used the app Blinkist for reading books? It gives you a summarized version of non-fiction books. I find it really hard to find time while in grad school and working to read on my own that is not necessarily for pleasure, but to keep learning, so I just downloaded it to give it a try for a free 7 day trial, but it costs around $90 for the year...I'm wondering if anyone has used it and has any thoughts on it!