I have created a talent calculator for Classic vanilla Wotlk TBC WoW, that runs on both Android and iOS devices. In the app, you can save your builds on your phone.
I can’t post a link, as I am a new forum user. But if you search for WoW talent calculator on either the Google Play Store or Apple App Store, it should come up first. Developer name: Fissher
(It’s got a picture of three trees, the name of the app on Play Store: Classic WoW TBC Wotlk Vanilla Talent Calculator, on App Store: WoW Talent Calculator, but write only “wow talent calculator” in search, it comes up first on both stores)
Hope you enjoy, and all feedback is very much appreciated!