@amolpatil,
Earlier WebKit allowed 448MB of canvas buffer memory whereas now they have dropped it to 224MB. Because of this, there was some memory issue with CanvasJS Charts in the latest iOS. However, we have optimized memory consumption in CanvasJS v2.3 – please check out this release blog for more info. Kindly download the latest version of CanvasJS Charts from our download page and let us know your feedback.
We are closing this thread as this is duplicate of Canvas line Chart not Visible IPAD. Please check / revert back in the other thread.
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Vishwas R
Team CanvasJS