# Delta. Modern ebook reader — user reviews > 12 indexed App Store user reviews of Delta. Modern ebook reader by VIKTOR DIACHENKO, rated 4.20/5 from 94 ratings. - Source: https://appshunter.io/ios/app/delta-modern-ebook-reader/id1291940058/reviews - App overview in markdown: https://appshunter.io/ios/app/delta-modern-ebook-reader/id1291940058.md - Rating breakdown: 5★ 62 · 4★ 13 · 3★ 6 · 2★ 5 · 1★ 8 ## Most critical reviews (10 lowest-rated) ### 1/5 — No way to add my books! Almost no functions! *2022-05-30, version 1.5* No way to add my books! Almost no functions ### 1/5 — Pasting from Clipboard for no reason *2020-11-28, version 1.5* Every time this app is opened, it pastes whatever is in your clipboard. This is a HUGE PRIVACY and SECURITY ISSUE. There is no reason the app should be pasting whatever my clipboard has copied. It doesn’t even have a place it is doing it. DO NOT DOWNLOAD THIS APP. ### 1/5 — Small feature set makes this a joke. *2019-08-24, version 1.5* What is with app developers not bothering to add an import option, and instead telling you to go to another app and sharing the book to this app? How lazy can these devs get? At least they have a vertical scroll option, but no way to turn off pagination. Just two examples of the lack of thought and features hat went into this. This is not a serious ebook reading app. ### 1/5 — Cannot use it for more than 2-3 books. *2018-06-23, version 1.5* Waste of money.. hangs when adding more than one 2-3 books. Very unstable.. I use iPhone X ### 1/5 — Good app but, *2018-02-13, version 1.5* Can you introduce the justify feature? Thanks. ### 4/5 — Fantastic, just a few small suggestions *2019-07-03, version 1.5* This is a great ebook app. I've been hunting for an alternative to Apple Books for some time (Books is fantastic, but my wife uses it for collecting things online, and I don't want to be stuck with an Apple app, just in case, and none of my ebooks are from the Apple Book Store). I've tried kyBook 3, Marvin 3, eBoox, PocketBook Reader, tiReader, and Hyphen to name a few. eBoox had the best interface but didn't support PDFs. PocketBook and kyBook are both full featured, but PocketBook chokes on large files and kyBook requires a subscription to sync (a cheap one, but still). Delta has an interface almost as good as eBoox, runs fast and smooth, and syncs smoothly in the background (using iCloud). It's lacking a lot of features, but nothing that I actually want or need. In short, it's nearly perfect. I only have a few suggestions (I would be willing to pay extra for these): 1. I'd like to be able to edit the file's metadata 2. I'd like to be able to change how the books in the library are sorted (title, author, etc) 3. It would be nice if the sepia coloring also changed the images in the books (kyBook does this well, it's nice for reading at night) 4. A page curl animation would be a nice touch, but only if it's a real interactive one like Apple Books has, not a faked one None of these are deal-breakers, clearly. This is a fantastic reader and I think I'll be using it for a long time regardless. ### 5/5 — Outstanding *2020-11-02, version 1.5* Hopefully, find the right reader after checking many different book-readers. It makes the job done, well. Very good for font settings and quick acess to library and contents. Also, very simple and perfect interface. ### 5/5 — Great App *2020-01-20, version 1.5* Does what it’s supposed to do! ### 5/5 — Useful *2019-10-16, version 1.5* Good app ### 5/5 — Please add rename title *2019-01-26, version 1.5* 9/10 ## Most praised reviews (2 highest-rated) ### 5/5 — request *2019-01-22, version 1.5* please add Persian language fo translator option, non of the book's App don't support us. ### 5/5 — Very good *2018-12-04, version 1.5* Finally what I’m looking for! ♥️ --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*