4 years ago the developer quit supporting the app that was publicly released. Functions kept breaking and they never were fixed, so I quit paying for it. I hired a different developer in early 2017 and was never happy with the way that app functioned. I kept paying every month and requesting bug fixes that would take months. That app was never functional enough to publicly release. I finally let that developer go in February this year.
The browser version works well on browsers, so for now we're going with that.