If you're reading books on your smartphone, there are really many options for e-book services. The other day, I tried out some popular e-book services and realized that the best service really depends on how you use it.

If you prioritize discounts, look for services with generous first-time benefits. Especially, ebookjapan offers good discounts on subsequent purchases as well, making it suitable for regular users. On the other hand, if you want to read cheaply right now, the first-time discounts on DMM Books and ビューワー機能 are quite substantial. If you often read manga and light novels, it’s also good to check out their point reward systems.

For those who value readability, comparing e-book services based on the richness of their ビューワー機能 is a good idea. Honto and Kinoppy, for example, offer detailed settings like switching between vertical and horizontal writing modes, making for a comfortable reading experience. Whether you can create multiple bookshelves is also surprisingly important if you plan to use the service long-term.

When buying in bulk, it’s important to check the purchase limits. BOOK☆WALKER offers a generous 200-book point return for the first purchase, and au Book Pass allows discounts up to 100 books. Conversely, Reader Store is more suitable for single-book purchases, so choose based on your buying pattern.

Search functions may seem minor but are actually important. Being able to filter by genre or author is basic, but whether you can search by review ratings can affect how easily you find your favorite works. The ability to purchase within the app also makes a difference in convenience.

Ultimately, when comparing e-book services, you need to look at more than just the size of the initial discount. Consider the benefits for subsequent purchases, ease of search, reading comfort features, and overall factors. The best choice varies depending on what genres you read and how much you buy.