# [OS X TeX] Best iPad PDF viewer for math?

Ettore Aldrovandi ealdrov at mail.math.fsu.edu
Sat Aug 22 00:55:54 CEST 2020

Notability is wonderful for writing—and even better with the Apple pencil. That’s my default note-taking and lecturing (now in these Zoom dominated days) tool.

However, just for reading PDFs there are better more specialized apps. I am a longtime GoodReader user, and most recently I’m using PDF Expert. Both are excellent: they can open several PDFs simultaneously, you can mark them, and they seem to cope fairly well with large synchronized folders, offering a large array of underlying connection protocols. I have a folder with about 13GB worth of PDFs which is synced over SFTP without a hitch.

Hope this helps,

—Ettore

Ettore Aldrovandi
Department of Mathematics, Florida State University
Tallahassee, FL 32306-4510, USA * * aldrovandi at math dot fsu dot edu

> On Aug 21, 2020, at 18:38, Louis Talman <talmanl at gmail.com> wrote:
>
> I use Notability.  In addition to the abilities you ask for, it allows one to write on PDFs, either those imported or those created by the app.  Inexpensive styli work, though for good resolution you will want to go a step up to Adonit’s Mark 4.  (In any event, use a capacitive stylus for economy.  I presume that an Apple Pencil or something of that ilk will work, but why spend the \$!). You can also connect it to a projector, use it as a display in your classroom as you record what you write in class.  Then you can transfer the resulting PDF to a website where students can have access to it.
>
> On Aug 21, 2020, 11:41 AM -0600, Richard Seguin <riseguin at earthlink.net>, wrote:
>> Skim does not make a PDF viewer for iPads. What iPad PDF viewer most closely matches the capability of Skim, especially in regard to math documents? I can view my PDF documents in the Books and Safari apps, but they don’t seem to give me the table of contents in a readily accessible sidebar, don’t have Back and Forward buttons (pages in order of viewing), can't navigate by logical rather than physical page, and don’t give a thumbnail of a \ref if I hoover the cursor over the \ref.
>>
>> There are a bunch of these viewers available, and I’m hoping that someone has already done research so I don’t have to.
>>
>> It would be wonderful to be able to be able to carry around 200 page math documents in a svelte one pound package like my iPad Air.
>>
>> Richard Séguin
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