You can study ChinesePod lists on the iOS app, sure! You can go into the Lists area, and then the ChinesePod area. What sort of problem are you running into when trying to add a ChinesePod list?
You can import vocabulary into Skritter. On legacy (https://legacy.skritter.com), you can paste up to 200 words at a time into a list section. As long as each word is separated line-by-line, you can copy and paste them all at once to import them into the list section.
If the list you’ve added from ChinesePod says “finished”, it would mean all of the words have completed adding. In this case there’s no way to reset the list to 0% since the words are already added in the system-- however if any words had been skipped over (from a study prompt type having been disabled in the past for instance), you could reset the list to add back from the beginning, which will add any parts that had been skipped over. To do this, go into the list’s page (by clicking it’s name), and then “Change study settings”. Then you would want to make sure it’s set to “Adding”, and that the list section is the very first section. (Then make sure to press Save to confirm the change).