Travefy might be a bit more popular than ReadEra. We know about 1 link to it since March 2021 and only 1 link to ReadEra. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I can answer question 1. To read downloaded fanfiction, or any other pdf/epub, you need a reader app. I personaly use the free version of ReadEra because it's the best I've found in terms of range of file formats, general functionality, and ease of use. I like it enough that I plan to spring the $10 for the paid version eventually. Source: 12 months ago
I recently booked a trip in India through a travel agent, and they shared the itinerary via https://travefy.com/. I enjoyed using the app to review the schedule for the upcoming day and that sort of thing. No idea how much of my fee went towards that. - Source: Hacker News / 2 months ago
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