เข็มทิศภูมิโหราศาสตร์ is a free Android app developed by NoV Android Solutions. It falls under the category of Utilities & Tools. This app is designed to provide accurate and detailed analysis of Horary Astrology, with a focus on Chai Poom. It uses the 8 directions or 4 Gak system to determine positions. It is based on the teachings of Ajarn Grian Krai, who emphasizes the use of 4 main subjects for Horary Astrology: Chai Poom, Direction (9 Epoch Stars), Chinese Zodiac, and Seasonal Time.

In the past, Horary Astrology heavily emphasized Chai Poom alone. The app includes a clear and concise guide on how to analyze Horary Astrology. It is recommended to find a location that is free from magnetic interference, such as TV and radio, before conducting measurements. The app provides a convenient way to measure angles using a sunlight measurement plate. It was first developed in late 2019 and has since been used as an educational tool in various events. The app aims to make the process of Horary Astrology easier and more accessible.