Here is some GOOD NEWS !!!
Now you can watch Jio Cinema & Jio TV on your Desktop or Laptop using any browser. Jio has silently launched the web version of both the apps.
Go to following links :
Jio Cinema https://www.jiocinema.com/
Jio TV https://www.jiotv.com/
Details will be updated later.
Login using your Jio ID to watch (I was able to login with email ID as well as Unique ID but Jio number & password combination didn't work).
Jio Cinema has an additional option of login using Jio number with OTP.
I was able to play HD stuff smoothly in Edge browser whereas it didn't play in my Firefox browser (may be because I have not installed Flash in my Firefox).
Latest Update : for the time being Jio has disabled & put Under Construction page - wait for it to get removed then try. Will Update.