A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Andrew Nikitin
Date: 2016 Sep 20, 07:21 -0700
The closest I can think of is uWatch, here is a direct link http://www.calcwatch.com/ (simple google finds uWatch smartwatch/app which is not what you want).
Unfortunatley the technology is at least 10 years old and the kits are no loger available, but it is still doable.
Or at least may serve as a starting point.