How many devices can use hulu plus at once? 
The simple answer is one. Due to contract agreements with the networks and because the content is so new they can only allow one device to be streaming at a time. Some people in the past have gotten it to work with multiple devices but once their system figures out you are streaming with multiple devices you will get an error code. Check out their terms and conditions below:
4.1 Subscriptions. While we may offer Content from time to time for free, we charge a fee to access the Services that require a subscription. The Services may include different offerings. You can find the specific details regarding your subscription at any time by logging in on the Hulu Site and clicking on Account under your account name. You agree that your subscription is for personal use only, and unless the terms of your subscription authorize additional simultaneous streams, your subscription is limited to only one simultaneous stream at a time.
Because the Service is offered in multiple time zones, for consistency, a “day” for purposes of these Terms begins at 12:00 a.m. Eastern Time and ends at 11:59 p.m. Eastern Time of that same calendar day.
4.2 Billing. By providing a credit card or other payment method accepted by Hulu (“Payment Method”) for your subscription, you are expressly agreeing that we are authorized to charge you a periodic subscription fee on a recurring basis corresponding to the term of your subscription, any other fees for additional services you may purchase, and any applicable taxes in connection with your use of your subscription to the Payment Method. If you want to use a different Payment Method than the one you signed up to use during registration, or if there is a change in your credit card validity or expiration date, you may edit your Payment Method information by logging in on the Hulu Site and clicking on Account under your account name. When you provide a Payment Method to access a subscription, including in connection with a free trial offer, our system will attempt to verify the information you entered. We do this by processing an authorization hold, which is a standard practice. We do not charge you in connection with this authorization hold. If your Payment Method expires and you do not edit your Payment Method information or cancel your account, you authorize us to continue billing, and you will remain responsible for any uncollected amounts.
As used in these Terms, “billing” shall indicate either a charge or debit, as applicable, against your Payment Method. The subscription fee will be billed at the beginning of your subscription or expiration of your free trial period, if any, whichever is earlier, and on each periodic renewal date thereafter unless and until you cancel your subscription or the account or service is otherwise suspended or discontinued pursuant to these Terms. To see the commencement date for your next renewal period, log in on the Hulu Site and click on Account under your name.
We automatically bill your Payment Method on the calendar day corresponding to commencement of your subscription. For subscribers whose subscription starts with a free trial, billing will commence upon the expiration of the free trial. The interval of time between each payment due date shall correspond to the term of your subscription and be referred to herein as a “Billing Period.” In the event your subscription began on a day not contained in a given month, we bill your Payment Method on the last day of such month. For example, if you have a monthly subscription and became a paying subscriber on January 31, your Payment Method would next be billed on February 28. You acknowledge that the timing of when you are billed and the amount billed each Billing Period may vary, including for example due to promotional offers, gift card redemptions, credits applied, changes in your subscription, changes in your Payment Method, and changes in applicable taxes, and you authorize us to charge your Payment Method for the corresponding amounts.
If we offer you a promotion (e.g., a promotional price) for your subscription, the specific terms of the promotion will be disclosed during your sign-up or in other materials provided to you describing the particular promotion. In the case of promotional pricing, after your promotion ends, we will begin billing your Payment Method for your subscription at the regular price after your promotion ends unless you cancel prior to the end of your promotion or unless otherwise disclosed in communications made available to you.
Hulu reserves the right to change the terms of your subscription, including price, from time to time, effective as of the beginning of your next Billing Period following the date of the change. If Hulu changes the subscription fee or other charges for your subscription, we will give you advance notice of these changes. However, we will not be able to notify you of changes in any applicable taxes.
Very rarely, if there are special circumstances where Hulu determines it is appropriate (e.g., your subscription Service is unavailable for days due to technical difficulties), we may provide credits to affected subscribers. The amount and form of such credits, and the decision to provide them, are at Hulu’s sole and absolute discretion, and the provision of credits in one instance does not entitle anyone to credits in the future under similar or different circumstances.
