To watch Showtime Anytime on Sling TV simply sign up for a 7-day free trial then pay only $10.99/month (in addition to your normal Sling subscription).
With a subscription, you can watch all of the Showtime programs on-demand directly within the Sling tv app. However, at the time of writing, you won’t be able to use the Showtime app to view using your Sling subscription.
In conclusion, you can get Showtime Anytime on Sling but you have to use the Sling app or website to watch. You cannot use the Showtime app or website for now.
References:
- Can I use ShowtimeAnytime if I get Showtime through Sling – Reddit – https://www.reddit.com/r/slingtv/comments/91py9f/can_i_use_showtimeanytime_if_i_get_showtime/
- SHOWTIME on Sling TV – HELP CENTER – https://help.showtime.com/hc/en-us/articles/115005791167-SHOWTIME-on-Sling-TV
- Watch A La Carte Channels – Sling – https://www.sling.com/service/alacarte-channels
- Sling TV Customers Now Have Access to Entire SHOWTIME Library of On-Demand Titles – BWT – https://www.broadwayworld.com/bwwtv/article/Sling-TV-Customers-Now-Have-Access-to-Entire-SHOWTIME-Library-of-On-Demand-Titles-20170405