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Official Description

Check your network design with BestNetwork. This App takes your network as input and calculates the a priori estimated error of your network configuration (pre-analysis).

Free version
https://play.google.com/store/apps/details?id=bestnetworklite.com.blogspot.geomtours

Begin here with Quick Start Guide
https://geomtours.blogspot.com.au/p/bestnetwork.html

*** designed for ***
- Surveyors
- Total Station user

Features:
- Definition of points on a map
- Definition of Total Station observations (distance, direction or both)
- Points and observations
- Find map location with GPS or address
- Calculate Least Squares Analysis

Results:
- Error ellipses
- Reliability
- Export result to KML file

Settings:
- Definition of Standard deviation of known points
- Definition of Total Station accuracy (distance and direction)

Keywords:
Surveying, Geomatics, Total Station, Measurements, Conventional surveying, Least Squares Analysis, Pre-analysis, A priori errors, Error ellipses, Reliability, Data Snooping
Standard ellipses, standard deviation, Simulation, Survey network, Observations