Here's a few tips from my experience of using PressReader in case it helps someone:
PressReader is ideal for the iPad Pro. I wouldn't even try to use it on an iPhone to read a newspaper. I've only downloaded the one version and it works perfectly on my iPad Pro, and there's no x1 or x2 option.
Whilst Qantas gives us 12 hrs free access prior to a flight, there's a much better option. No, it's not paying the monthly US$25 subscription fee to PressReader. Many libraries and hotels throughout the world give free access to PressReader. The City of Sydney libraries give 7 days of access, and you don't need to live in the area or have a library membership. I just walk in, or go near the library after hours, connect to the unrestricted wifi, run the PressReader app and I get 7 days access which I can then use from home. The PressReader app has a Hotspot Map available to find free hotspots.
One thing I don't like about PressReader is that all issues of a magazine are displayed in the one flat view, although a folder structure is available on the left side.
I also use the Zinio magazine app for collecting magazines. As an example, the City of Sydney library provides free access to its library members to selected magazines via Zinio, about 180 mags altogether, however you don't get access to the complete Zinio collection via this free service. I get an email when an issue is available to download via the Zinio app. Many other libraries also offer a similar service. But ensure you download the Zinio app, not the Zinio for Libraries app. Zinio stores previous editions of each mag in its own folder, a much neater arrangement than PressReader.