Hi Shika,
please check you settings of the BI app on your iPad.
If you have the Best-Fit option switched on, the graphics will be re-arranged to a "best fit".
If this option is switched off the app will show the graphics in the same way as the web report designer .
Please be aware that the number of pixels on your iPad is much lower than on your web-screen.
Do not expect the result to be visually acceptable if you have much objects.
I always create seperate report for Web / iPad and even iPhone and take care that they can only use the right ones.
Greetings Peter