Another app that purports to do the same thing is 
https://ultimeyesvision.com/
This app is available on Windows, Mac, iPhone and Android.   It's $9.99.

Here's an article from back in 2014 about it:  http://www.huffingtonpost.com/2014/02/20/ultimeyes-app-training-program-improve-vision_n_4816049.html
Tested with baseball players a quote about it's effectiveness: 
"Throughout the course of the season, some players’ visual acuity actually jumped from 20/20 vision to 20/15, 20/10 and even 20/7.5. And in the study, the researchers recorded an average of 31 percent improvement in binocular vision."

Note that the FDC fined this company $150k for making false claims that it helps your vision:

https://www.ftc.gov/news-events/press-releases/2015/09/ftc-charges-marketers-vision-improvement-app-deceptive-claims

Documentation on this case is here:  https://www.ftc.gov/enforcement/cases-proceedings/142-3132/carrot-neurotechnology-inc-matter-ultimeyes

A similar false advertising claim was also made against and "brain training" company Lumos Labs for their Lumosity app-- this time they were fined $2 million:
https://www.neurotechindustry.org/ftc

The FTC is stating they will vet the peer "peer reviewed" studies often touted in these types of cases:
http://www.consumeradvertisinglawblog.com/2016/03/ftc-we-will-vet-your-peer-reviewed-studies.html