Q: Notegorical app?  Supported by iOS 10?

You should probably contact the app developer or their support page to find out if the app is supported in iOS 10.x. It is possible the app needs to be updated for iOS 10.x and they have not done so yet.

normally, I would refer you to the iTunes preview page for a link to Notegorical Support (app developers are required to support their own apps - and the link to that support is required to be on that page)

BUT

I cannot find a link to Notegorical ON iTunes = ONLY external links that are untrustworthy download sites

Notegorical itunes - Google Search

https://www.google.com/search?q=Notegorical+itunes&ie=utf-8&oe=utf-8

The developer has taken a powder ....

*******

<Link Edited by Host>

Was the developer's link even live ? No way I'd download from the internet.

Live but dead = call it "LIMBO" (for sale)

Thank you. It appears the OP will have to take screenshots of his Notegorical info then transfer by hand.

Appears so...

OR

Start from scratch with a NEW APP and simply "refer" to old notes?

Is a possible strategy to (in Notegorical) simply tap > hold > select all > copy > switch to the New App > paste?

hrcminock said he couldn't copy/paste from the app. That was the tip off something wasn't right.

I must choose between my memory and re-reading the whole thread all over again at this hour...

Memory wins - and appears to have failed me

My Google search "should" have shown an "archival" (crawled and cached) version of any iTunes Preview page IF it ever existed.

Methinks this was an "off the reservation" download to begin with.