There is no official mobile app by Jisho.org for any platform, it's just the website. I'd consider it probably the best feature there is to add, but there'd be the need of a high-quality source of pitch accent data that can be freely used. I'm personally not aware of any app that is using pitch accent information legally, but hopefully I'm wrong.
(Although it seems like the Japanese-German dictionary wadoku.de has pitch accent, at least on the website. Maybe their database could be used if they permit it. But that'd be up to the Jisho.org team to figure out.)
You can use this extension to add pitch accent to jisho entries based on the OJAD database: https://chrome.google.com/webstore/detail/jisho-ojad/dpaojegkimhndjkkgiaookhckojbmakd?hl=en
Note that it may not always be accurate as it can get confused on words with multiple readings. It also queries the database dynamically so it takes a little to show the pitch accent information after the jisho page finishes loading.
Pretty dope. Having all the pitch accents for conjugations of verb etc. included makes for a very helpful resource indeed.
I've looked at using wadoku.de data for pitch accent, and it should be possible. It's just something I need to get around to :)
There's also a website called Forvo which helps with intonation and pitch accent, and does so for a lot of other languages, so it would be useful to use both wadoku.de and Forvo.
Forvo has good content, but it doesn't include pitch accent. (Though a human listening to the recordings could infer the pitch of a given word, but that's kinda beneath the point.) Moreover, their content can't be used freely, so they would need to specifically allow Jisho.org to use it.
Pitch Accent Patterns
On the mobile app, there is an option to include pitch accent patterns, which I believe is just as important as any other aspect of a word (Kanji, reading, meaning, etc.). Is there a way to enable this on the website version as well?