user7002: Is there any ios app that can read .cbv files?
If not, how can I convert them to .pgn? I tried to follow this post, but the output is "parse error" to chess viewer (developed by everyman chess).
Any suggestion?

user825: To my knowledge there is no such iOS app. Sorry. 
Try the Chessbase Fritz to do the conversion.

7002: <p>Is there any ios app that can read .cbv files?</p>

<p>If not, how can I convert them to .pgn? I tried to follow <a href="https://chess.stackexchange.com/a/13737/7002">this post</a>, but the output is "parse error" to chess viewer (developed by everyman chess).</p>

<p>Any suggestion?</p>
 825: <p>To my knowledge there is no such iOS app. Sorry. </p>

<p>Try the Chessbase Fritz to do the conversion.</p>
