You are able to legally view Sonny with a Chance on iTunes or purchase it on DVD. On iTunes, the cost is $2.99 per episode or $24.99 for the season, as of 2015. You can also purchase the show on DVD on Amazon.com.
If you purchase an episode or season on iTunes, there are a few options for viewing. You can watch on your iPhone or iPad. If you have Apple TV, you can watch on your television. Since these options might not work for everyone, buying the DVD of the show may be the best option. You can purchase the DVDs on Amazon.com.