
HBO Max
SubscriptionDuo-native
HBO series with Warner Bros., DC and A24 films
On the Duo: Duo-native. Its description says the unfolded iPhone Duo shows your list and the show side by side; its maker's site shows the watchlist on the left and a show's details on the right on the open Duo. Checked November 5, 2026.
App Store data as of November 5, 2026

Anyone who dislikes ads in a free app, since removing them and the money-saving features needs the Skipper Pro subscription.
Skipper is a TV and movie tracker built around three questions: what to watch next, who you are watching with and how to pay less. For You learns from your ratings, Watching With filters your watchlist to shows you share with a partner or the kids, and Subscriptions shows which services your shows need this month. Every title lists your services at the top and opens in the right app. It marks the next episode in one tap, alerts you to new releases, imports history from Trakt, Letterboxd, IMDb, Simkl and TV Time, and syncs through iCloud with no account. Skipper Pro, monthly or yearly, removes ads.
Its description says that on iPhone Duo, unfolded, your list and the show sit side by side; version 1.3 (20 October) added TV Time import. Its maker's site shows the Watchlist on the left of the open Duo, with priority shows, next episodes and their services, and Stranger Things on the right with its artwork, episode progress, synopsis and a Mark Watched button.