Chess Openings Wizard – Mobile Versions (iPad, iPhone, Android)
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Last update: 2026-03-23
Chess Openings Wizard is constantly under development to stay current with new engines, best practices, new versions of Windows, Macintosh, iPhone, iPad, and Android, and the ideas from those who use it every day.
That said, it is risky to make the bug list available to the public. The vast majority of software publishers keep their bug list private so as not to discourage new purchases who might assume that the software has too many problems because everything known about the program is in this list.
Rest assured, Chess Openings Wizard is used by more than 67,000 chess players.
I publish our bug list because:
I personally appreciate it when a software maker tells me about any known problems for programs that I want to purchase.
I think chess players are smart enough to realize that all sophisticated software has bugs, and that listing them publicly is my way of making sure you know it’s being worked on.
Thanks.
Mike Leahy, The Database Man!
Last Report: March 23, 2026
| Chess Openings Wizard | Latest Build | Released |
| iPad and iPhone | Build 88 | March 23, 2026 |
| Android | Build 89 | March 23, 2026 |
| Amazon Android (Kindle Fire) | Build 43 | Cancelled |
| COW Engine Server for Windows (Replaced by PocketGM server) | Build 8 | November 12, 2018 |
Changes in build 88, 89 for iPhone, iPad, Android
During training, build 88 and 89 no longer loop back to lines with two or more candidate moves (for your side), hoping you will play the other move.
Changes in build 87 iPhone, iPad
This build fixes a bug that would cause the app to freeze when choosing Blue Genius or Brown Personal as diagram styles.
Changes in build 85 iPhone, iPad, and Android
These builds fix an issue that sometimes caused the app to quit as it started up. Build 85 replaces build 83 for Android. Build 85 replaces build 84 for iPhone and iPad.
It also improves the speed of downloading ebooks you’ve stored in the cloud. (Storing your ebooks in a free DropBox or Google Drive account is great way to make sure you always have your openings even if you lose your phone or tablet. It’s also the way to move your ebooks to and from the Windows and Macintosh versions.)
Changes in build 84 for iPhone/iPad
Build 84 replaces build 76. It fixes a bug that failed to connect to the cloud (Google Drive, free Dropbox accounts) for backing up ebooks.
Changes in build 83 for Android
Build 82 replaced builds 70 and 81. It fixes a bug that reverts to the default email address when getting analysis from the PocketGM server, resulting in getting someone else’s analysis.
Changes in build 76 for iPhone/iPad
This build replaces build 65. Support added for using AirDrop and Finder to move your ebooks from your Macintosh to your iPhone or iPad.
Changes in build 70 for Android
This build replaces build 66.
The training wizard has been overhauled to allow resetting just the current line. Adding new moves will also automatically reset training for that line.
The PocketGM server allows Stockfish 16.1 analysis via the internet. The 4,400 most common opening positions get instant cached analysis.
Changes in build 66 for Android
This build replaces build 62.
This build fixes a bug with promotions. Newer versions of the Android OS didn’t like the way the COW app asked the user for the promotion piece (similar to the new iOS updates).
Changes in build 65 for iPhone and iPad
This build replaces build 60.
This build adds support for Google Drive. This is essential if you have ebooks larger than 140MB which hits an upload limit for Dropbox. The menu option formerly labeled Dropbox is now labeled Cloud Storage and it allows you to choose between Dropbox and Google Drive.
This build fixes a bug with promotions. Newer versions of iOS didn’t like the way the COW app asked the user for the promotion piece (similar to the new Android updates).
Changes in build 62 for Android
This build replaces build 57.
This build adds support for Google Drive. This is essential if you have ebooks larger than 140MB which hits an upload limit for Dropbox. The menu option formerly labeled Dropbox is now labeled Cloud Storage and it allows you to choose between Dropbox and Google Drive.
Changes in build 57 for Android
This build starts up much faster and hopefully gets around the freezing issue of the last three builds.
Changes in build 54, 55, 56 for Android
Fixed bug that complained of “Blocking dialogs no implemented on this platform” when opening ebooks in the 2022 format.
Changes in build 52
This version adds support for Android 10.
Changes in build 50
iOS version now looks much better in dark mode.
Changes in build 49
iOS version now supports iPhone and iPad.
Changes in build 48
Screen layouts are now friendlier for phones and other devices with small screens.
Fixed bug that showed two selected squares when Black was at the bottom of the diagram.
Sorts the ebooks by name.
A button now appears for editing comments (upper right corner) so that scrolling through comments will no longer accidentally trigger the editor.
Diagram now has options for algebraic hints and arrows showing the last move.
Changes in build 43
DropBox optionally overwrites the file in the cloud to allow for syncing (rather than creating a new file).
Added screen with ebook information.
Can delete ebooks.
Can edit comment and candidate font size.
Shows training wizard controls correctly in portrait mode.
Training Wizard setup window scrolls to show all the controls.
Resetting training works properly.
Changes in build 40 and 41
The menu shows “White at Bottom” and “Black at Bottom” correctly.
The comment editing popup steers clear of the popup keyboard.
Landscape shows the engine server’s numeric assessment and Informant rate symbol. (It was missing on some devices.)
Suggestions
| Description | Sponsor | Importance | Projection |
| In training, when a line ends, show the comments briefly | Chuck H | Low | |
| Add algebraic hints to the borders of diagrams | beta testers | Low | Fixed in build 48 |
| Add PGN import | beta testers | High | |
| Add comment edit mode (so touching comments doesn’t always trigger editing) | Rob F. | High | Fixed in build 48 |
| Add position setup | Xavier M. | Medium | |
| Add paste FEN and PGN | Xavier M. | High | |
| Support iPad keyboard | Xavier M. | Low | |
| Better themes | Xavier M. | Low |
Bugs
| Description | Sponsor | Importance | Projection |
| Played moves are not stored when the app quits. | Ron T. | High | |
| Switching to Blue Genius or Brown Personal hangs iOS version. | Douglas F. Jim D. | Low | Fixed in build 87 |
| Range check error when training as Black | manassasguy | High | |
| Parameter ‘fstatic_informant_rate’ not found. Error message cannot be duplicated. | Frank vdW | High | |
| Dark mode is not supported on iOS. | (Many) | High | Fixed in build 50 |
| Renaming ebook before using Cloud Storage screen results in error message. | Fixed in build 67 | ||
| Android version times out during Dropbox synch. | Don W. | High | Fixed |
| Cancel button when deleting ebook doesn’t work. (It can be canceled in the next window.) | Gary M | Low | Fixed in build 48 |
| Deleting sample ebooks does not work. Those ebooks reappear the next time the app is run. (That’s the way it was designed so that the samples can be refreshed.) | Divergent71 | Low | Indefinite |