Answers.Body: <p>Giordano Vicoli's Chess_Studio (not to be confused with a similarly named e-reader app from Gambit Publications) seems to have many of the features you are looking for.  I've only tried Chess Studio Light, but it is able to import a much wider range of PGN files than any of the PGN viewer apps.  Within a PGN archive, you can view lists of games sorted by Event, Opening, Player or Year. The game window in the Lite version allows you to add nested variations and text and some NAGs (!, ?, only move, and novelty), but you may need the paid version to analyze with Stockfish as kibitzer, or add long lines of moves to a game.  You can save games, or send them by email.  It registers itself as a PGN program, so you can use the "Open in..." menu item to add PGN files to it from programs which have "Open in..."  You can download and upload from Dropbox and iCloud.  You can download from TWIC or PGN Mentor.  It also has Nalimov tablebases for 6 men endings.  In the paid version, it looks like you can play against Stockfish, and set its rating from 500-2500 elo with a choice of aggressive, active or solid styles.  You can set up a position, and play the engine from there.  There isn't a tree view or keys.  The openings index is sorted by ECO codes with no diagrams or names.  Even so, it's the most complete PGN editor/database I've seen for iOS.</p>
  
  <p>In Smallfish, Smallchess and Stockfish, when you try to add a new variation, the app deletes the moves that were there before, so nesting is impossible.  They don't seem to allow you to add text comments or NAGs either.  Smallfish can display text comments from PGN files you import, but the moves in these comments are not clickable.</p>
  
  <p>Re. Android, Chess PGN Master Pro, Droidfish and Chessbase Online all seem to allow you to annotate games, and add subvariations and some NAGs.  The Chessbase app for iOS seems to be more about just accessing their website.</p>
  
  <p>Re. opening repertoires, I haven't tried the iOS version of Arnel Domingo's Chess Opening Trainer, just the Windows demo, but it lets you input your own repertoire, test it, and has trees.</p>
  
  <p>I should also probably mention that there are a number of PGN Editors that you might be able to access online using Safari: Chess.com's Analysis Board Editor, Lichess.org's Board Editor, Apronus and Caissa's Web.  A lot of sites also have opening trees, eg. 365chess.com, Chessbase and ChessOK.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-24T14:25:45.423Z
Answers.Text: +1 No... SmallChess allows variations be added. I'll add that as a new answer.
Answers.UserDisplayName: SmallChess
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-28T14:38:33.590Z
Answers.Text: Smallchess doesn't appear to have a game notation panel.  When you're annotating, you probably want to see both the main line, and sidelines you add.
Answers.UserDisplayName: A passerby
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-01T01:19:27.230Z
Answers.Text: I've added my answer. Please take a look, SmallChess has a game notation panel and more.
Answers.UserDisplayName: SmallChess
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-24T07:59:07.797Z
Answers.LastActivityDate: 2015-09-30T10:20:59.873Z
Answers.LastEditDate: 2015-09-30T10:20:59.873Z
Answers.UserDisplayName: A passerby
Answers.Body: <p>I'd want to add details to @A_passerby's answer. <b>SmallChess</b> does support multi-variations. It also supports game annotation. It's a very advanced software. See the screenshots below.</p>
  
  <p>PS: I'm the author of the app.</p>
  
  <p><a href="https://i.sstatic.net/EoTdj.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/EoTdj.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/y4Rb8.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/y4Rb8.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/vsELX.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/vsELX.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/mBN1l.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/mBN1l.png" alt="enter image description here"></a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-02T19:33:42.747Z
Answers.Text: Oh I see. In settings, you turn on Coaching, and for Coaching Style, you select 'game.' You can insert one subvariation, but I can't seem to promote a line, and if I input a new move in the subvariation, it overwrites the move that was there before. Chess_Studio can make subvariations within subvariations, and gives you the option to promote lines.
Answers.UserDisplayName: A passerby
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-01T01:18:52.557Z
Answers.LastActivityDate: 2015-10-01T01:18:52.557Z
Answers.UserDisplayName: SmallChess
Body: <p>I'm looking for a Scid port (or alternative software) to run on an iPad. Currently I use SCID + Stockfish in my Ubuntu Linux, but I'd like to use my iPad for the same functionality.</p>
  
  <p>AFAIK there's a SCID port for Mac, but I've found nothing for the iPad. Any suggerence?</p>
  
  <p>Update:</p>
  
  <p>When I ask for the "same functionality" what I'd like most would be:</p>
  
  <ul>
  <li>Games database (of course).</li>
  <li>Database search.</li>
  <li>Openings explorer (aka tree view).</li>
  <li>Analyze games.</li>
  <li>Annotate games.</li>
  </ul>
  
  <p>Others like playing on FICS/ICC or playing the computer are not needed as I can use other clients for that.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-13T10:56:15.160Z
Comments.Text: SCID on the go?
Comments.UserDisplayName: magd
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-13T11:58:35.670Z
Comments.Text: AFAIK Scid on the Go only works on Android, not iPad. And has a limited functionallity.
Comments.UserDisplayName: sharcashmo
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-13T14:31:49.987Z
Comments.Text: What exactly do you want from the app? Database? SmallFish and SmallChess has it.
Comments.UserDisplayName: SmallChess
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-13T14:51:30.087Z
Comments.Text: I'll update the question with the functionalities I'd like to find, so we can rank alternatives according of how many of them they implement.
Comments.UserDisplayName: sharcashmo
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-13T23:53:03.630Z
Comments.Text: Ok. I've seen your updated. Unfortunately, there is no such thing on iOS. You don't see it because nobody wants to do it for free. I doubt you'll ever see it.
Comments.UserDisplayName: SmallChess
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-14T07:34:34.330Z
Comments.Text: @StudentT Well, in fact Scid and its forks are open source software (GPL's). I'm part of some open source projects myself. The fact there's no Scid for iPad is maybe related with Apple ban of GPL'd software (http://www.zdnet.com/article/no-gpl-apps-for-apples-app-store/) than with the claimed (and, AFAIK, false) fact that "nobody wants to do it for free".
Comments.UserDisplayName: sharcashmo
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-14T07:48:24.597Z
Comments.Text: I should have been more precise. I actually meant nobody wanted to volunteer their time to make something what you described for free on the iOS. The GPL license thing has nothing to do with our discussion. I have a GPL chess app on the iOS myself...
Comments.UserDisplayName: SmallChess
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-14T07:54:26.343Z
Comments.Text: @StudentT Ok, thanks. Anyway, I'd look for SmallFish and SmallChess and I'll write a short excerpt of the functionallities they implement
Comments.UserDisplayName: sharcashmo
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-05-14T08:10:39.720Z
Comments.Text: Let us [continue this discussion in chat](http://chat.stackexchange.com/rooms/23761/discussion-between-sharcashmo-and-student-t).
Comments.UserDisplayName: sharcashmo
Tags: <scid>
Title: SCID (or any alternative) on iPad
ThreadText: # SCID (or any alternative) on iPad
  
  (Asked by: username_0 on 2015-05-13)
  
  I'm looking for a Scid port (or alternative software) to run on an iPad. Currently I use SCID + Stockfish in my Ubuntu Linux, but I'd like to use my iPad for the same functionality.
  
  AFAIK there's a SCID port for Mac, but I've found nothing for the iPad. Any suggerence?
  
  Update:
  
  When I ask for the "same functionality" what I'd like most would be:
  
  * Games database (of course).
  * Database search.
  * Openings explorer (aka tree view).
  * Analyze games.
  * Annotate games.
  
  Others like playing on FICS/ICC or playing the computer are not needed as I can use other clients for that.
  
  **Tags:** scid
  
  > **Comments:**
  > **username_1**: SCID on the go?  
  > **username_0**: AFAIK Scid on the Go only works on Android, not iPad. And has a limited functionallity.  
  > **username_2**: What exactly do you want from the app? Database? SmallFish and username_2 has it.  
  > **username_0**: I'll update the question with the functionalities I'd like to find, so we can rank alternatives according of how many of them they implement.  
  > **username_2**: Ok. I've seen your updated. Unfortunately, there is no such thing on iOS. You don't see it because nobody wants to do it for free. I doubt you'll ever see it.  
  > **username_0**: @StudentT Well, in fact Scid and its forks are open source software (GPL's). I'm part of some open source projects myself. The fact there's no Scid for iPad is maybe related with Apple ban of GPL'd software (http://www.zdnet.com/article/no-gpl-apps-for-apples-app-store/) than with the claimed (and, AFAIK, false) fact that "nobody wants to do it for free".  
  > **username_2**: I should have been more precise. I actually meant nobody wanted to volunteer their time to make something what you described for free on the iOS. The GPL license thing has nothing to do with our discussion. I have a GPL chess app on the iOS myself...  
  > **username_0**: @StudentT Ok, thanks. Anyway, I'd look for SmallFish and username_2 and I'll write a short excerpt of the functionallities they implement  
  > **username_0**: Let us [continue this discussion in chat](http://chat.stackexchange.com/rooms/23761/discussion-between-username_0-and-student-t).  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_3 on 2015-09-24. Score: 7
  
  Giordano Vicoli's Chess\_Studio (not to be confused with a similarly named e-reader app from Gambit Publications) seems to have many of the features you are looking for. I've only tried Chess Studio Light, but it is able to import a much wider range of PGN files than any of the PGN viewer apps. Within a PGN archive, you can view lists of games sorted by Event, Opening, Player or Year. The game window in the Lite version allows you to add nested variations and text and some NAGs (!, ?, only move, and novelty), but you may need the paid version to analyze with Stockfish as kibitzer, or add long lines of moves to a game. You can save games, or send them by email. It registers itself as a PGN program, so you can use the "Open in..." menu item to add PGN files to it from programs which have "Open in..." You can download and upload from Dropbox and iCloud. You can download from TWIC or PGN Mentor. It also has Nalimov tablebases for 6 men endings. In the paid version, it looks like you can play against Stockfish, and set its rating from 500-2500 elo with a choice of aggressive, active or solid styles. You can set up a position, and play the engine from there. There isn't a tree view or keys. The openings index is sorted by ECO codes with no diagrams or names. Even so, it's the most complete PGN editor/database I've seen for iOS.
  
  In Smallfish, username_2 and Stockfish, when you try to add a new variation, the app deletes the moves that were there before, so nesting is impossible. They don't seem to allow you to add text comments or NAGs either. Smallfish can display text comments from PGN files you import, but the moves in these comments are not clickable.
  
  Re. Android, Chess PGN Master Pro, Droidfish and Chessbase Online all seem to allow you to annotate games, and add subvariations and some NAGs. The Chessbase app for iOS seems to be more about just accessing their website.
  
  Re. opening repertoires, I haven't tried the iOS version of Arnel Domingo's Chess Opening Trainer, just the Windows demo, but it lets you input your own repertoire, test it, and has trees.
  
  I should also probably mention that there are a number of PGN Editors that you might be able to access online using Safari: Chess.com's Analysis Board Editor, Lichess.org's Board Editor, Apronus and Caissa's Web. A lot of sites also have opening trees, eg. 365chess.com, Chessbase and ChessOK.
  
  > **Comments:**
  > **username_2**: +1 No... username_2 allows variations be added. I'll add that as a new answer.  
  > **username_3**: username_2 doesn't appear to have a game notation panel.  When you're annotating, you probably want to see both the main line, and sidelines you add.  
  > **username_2**: I've added my answer. Please take a look, username_2 has a game notation panel and more.  
  
  ---
  
  ### Answer by username_2 on 2015-10-01. Score: 2
  
  I'd want to add details to @A\_passerby's answer. **username_2** does support multi-variations. It also supports game annotation. It's a very advanced software. See the screenshots below.
  
  PS: I'm the author of the app.
  
  [![enter image description here](https://i.sstatic.net/EoTdj.png)](https://i.sstatic.net/EoTdj.png)
  
  [![enter image description here](https://i.sstatic.net/y4Rb8.png)](https://i.sstatic.net/y4Rb8.png)
  
  [![enter image description here](https://i.sstatic.net/vsELX.png)](https://i.sstatic.net/vsELX.png)
  
  [![enter image description here](https://i.sstatic.net/mBN1l.png)](https://i.sstatic.net/mBN1l.png)
  
  > **Comments:**
  > **username_3**: Oh I see. In settings, you turn on Coaching, and for Coaching Style, you select 'game.' You can insert one subvariation, but I can't seem to promote a line, and if I input a new move in the subvariation, it overwrites the move that was there before. Chess_Studio can make subvariations within subvariations, and gives you the option to promote lines.  
  
  ---
  
  