Yes it is, though plans and payment options are limited on the app itself, so you may need to use the website. Please follow the following instructions:
- After opening the app, you should be prompted to either log in or start a free trial.
- If you choose the free trial option, you will be asked to either subscribe on the device or on the website.
- Select "Subscribe on Device"
- You can instead choose the website version here if you wish-- it will provide you with a link you can use to sign up from any web browser.
- Choose Premium Plus Yearly or Monthly plans -- there's a 14 day free trial either way!
- If you would like either the Premium Plus Ultra or Premium plans, you will need to subscribe on the website at www.funimation.com/nintendoswitch.
- You will then fill out your e-mail address, preferred password, and card information for your subscription.
- If you would like to use PayPal or gift cards for your subscription, you will need to subscribe on the website at www.funimation.com/nintendoswitch.