[haertig]

Is Moon+ reader considered the "go to" app for Android? I see it mentioned a lot around here. Online reviews say current versions are chock full of ads though (at least the free version). Reviews also mention it appears quite the bloated and resource-hungry app. I take these reviews with a grain of salt, but I don't totally discount them - there's usually some truth in most reviews.

I finally bought myself a decent "mid-range" smartphone. Moto G7, which runs Android 9.0 Pie. I will only rarely read eBooks on this device, but I might on occasion if I don't happen to have my PaperWhite with me. I don't need many features. I don't need to sync to other eReader devices. Since my other eReader devices are in permanent Airplane Mode it would be rather futile to try to sync anyway.

I don't mind paying for an app, as long as the price is reasonable ($10 or less, one time payment, not an ongoing subscription cost) and payment would totally get rid of any ads that may be present in a free app version. But seeing as how reading on my smartphone might be something I do for only a few hours per year it doesn't make much sense to buy an expensive full-featured resource-intensive app. If I want to read seriously or for long durations, I'll use my PaperWhite.

Where does the simple "Kindle" app fit in? It's free. Is that a reasonable choice? Can you sideload DRM-free books to it on an Android phone? I don't care what format the eBooks need to be in, so long as the format is something Calibre can convert to. AZW3 or EPUB would be preferred, since I maintain all my eBooks in those two formats in my Calbre installation and wouldn't have to worry about conversion at download-time.