Quick verdict
- What it is
- Store information collected; independent summary not yet available.
- At a glance
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- Free to download
Categories and search queries
Official categories
- Books
- Productivity
AppCorpus categories
Key functions
| Function | Availability | Access | Scope | Evidence |
|---|---|---|---|---|
| Free app | Yes | Free | — | Store published |
Screens
App Store
11 store screenshots
Pricing & paywalls
App Store
- Free
Ratings & reviews
App Store
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5/5If you have books/Pdf’s - you need this
I have spent hours searching the App Store , looking for a visual file/folder type of organizer for my way-too-many book collection. Just a general, all around storage-preferably that works with PDF format. Quite by accident, while looking for something else, I found this hidden jewel. I love it. If you love books, have a lot of them, and prefer them in PDF format-and want a solid, simple, no glitches way to organize and store your books ( I have just over 200 in this app) then download this app! It does not have 40 functions, and there is a little how-to handbook; but you don’t need it. What it does do, is create folders to organize and store books or documents. A small list on the left “ nests” title separators and their folders, and on the right displays large folders, and nested inside are large books with the actual book cover as the icon. Or the first page of a document. You can change the cover, if you wish. There are no hidden prices for anything, it’s an actual free app! Never glitched on me, and has never crashed. This app should be an essential, if you have lots of pdf with no home
original breaker · 31 Jul 2026
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5/5Criminally Underrated!
So this is the first app that made me break down and write a review! I got this to have an easy way to read art books while drawing, and I didn’t need anything with a lot of bells and whistles — just wanted something simple, something that let me see the PDF’s as needed. The first big boon to the program is that it allows easy folder generation and sorting, with the typical hold and drag method. I can sort things by art book, tutorials, other, and it’s wonderful. PDF’s are turned from right-to-left, not up-and-down, and that makes the process so much nicer. Ultimately, that’s all there is to it. It doesn’t make PDF, so there’s not all that bloat if that’s not something you need. You won’t find a better reader, and it’s absolutely free and has zero ads. How can it get better? I’m not sure it can.
Stutterbun · 31 Jul 2026
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5/5Best PDF Reader/Library in the App Store
I’ve looked and looked for a great solution for my RPG collection, and finally I’ve found it. As another put it, this is a criminally underrated program. I had to dig and dig on the App Store to find it and if you dear reader have arrived here from the same search, stop and download. I love that I can choose the cover if the pdf isn’t built to display the cover properly (looking at you Paizo). I love that this a lightweight program that stays out of the way, until I want to double tap to maximize a column view - and boom, it works. It’s so useful, I feel guilty getting it for free.
starthrower · 31 Jul 2026
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3/5Good, but has room for improvement
This app is mostly good, but there's one irritating bug where the zoom level resets whenever the page is turned. This won't bother you much if you're reading fiction, but if you're using it for anything you have to reference (I use it for Tabletop RPGs), the default zoom level gets the top and bottom of the document blocked off by the overlay, at least on an iPad Mini. I'll bump this up a star instantly once this bug is fixed. Also, this app doesn't support vertical pages like Apple Books does for PDFs, and doesn't support multiple books open at once. I don't care much about the former, but the latter would be very useful for me and I'll bump my review up to five stars if multiple tabs are ever added. (Assuming the zoom bug is fixed too, of course.)
Iphone 6S user 27591538582 · 31 Jul 2026
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5/5This is the one you’re looking for!
Huge thanks to the developer for this, I greatly appreciate it! It works perfectly, is intuitive to use and it’s noninvasive. After using this app extensively I have a few suggestions but I will only express one, which is purely out of self-afflicted frustration. I’ve found that it’s easy to accidentally delete folders and books, so I was wondering if you could put some kind of lock on the toolbar that prevents any function other than maybe renaming and opening documents?
The *AMAZING* Dee · 31 Jul 2026
Privacy & accessibility
App Store
Privacy
- Data Not Collected Developer declared
Accessibility
No accessibility labels collected yet.
Versions
App Store
- 1.0.0
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1.0.1
Fixed a bug where books in the book grid view weren’t resizing correctly on iPad in certain cases.
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1.0.2
Improved search. Fixed inconsistent bookmark button in certain cases. Fixed a minor book grid layout issue.
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1.0.3
Shared files will now be exported with the same names that you gave them in BookFolder, when possible.
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1.0.4
Fixed a bug where importing a book could occasionally fail under certain circumstances.
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1.0.5
Fixed a potential crash that could occur during drag-and-drop under certain conditions. Improved share panel behavior.
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1.1.0
• You can now tap on a group separator in the folder list to collapse the folders under it. Useful if you have a really long list of folders and just don’t want to look at all of them, or if you want to rearrange groups of folders more quickly! • Books can now be sorted automatically by name or by the date that you added them to your library, if you like. (Your custom book arrangement will be remembered and you can switch between the different sorting orders at any time.) You can also enable an option to show the date that each book was added. • There’s now an option to move from page to page by tapping along the left or right edge while reading. (Swiping or selecting a page from the page browser still works, as well.) This can be enabled or disabled via settings. • Added a new Welcome Guide to tell you all about these amazing new features! If you’re upgrading from an old version, then you can optionally have it replace your old Guide with the new one; or become a collector and keep a copy of every version ever released, like trading cards but marginally less cool. See the Settings for details. • And finally, a bunch of little UI tweaks and “under the hood” performance updates. (The old version was good, but this version is even better!)
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1.1.1
Fixed a bug that could cause certain Unicode sequences in book or folder names to become garbled.
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1.1.2
When reading a book, you can now tap on the page number indicator (below the page thumbnail browser) to enter a specific page number to jump to. Tapping on a link in a book that goes to an outside resource or site will now prompt for confirmation before opening the link. Fixed a couple of UI bugs where the title in the navigation bar was not being updated promptly in certain situations, such as when renaming a book while it was being read.
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1.1.3
· 4 Jan 2025
Fixed a visual issue that could occur under iOS 18.
Availability by market
- US
Data quality & evidence
- Page completeness
- Live store listing
- Last verified
- 31 Jul 2026
- Sources
- App Store
- Independent summary has not been published yet.