SLOPE/W is described as 'is the leading slope stability software product for computing the factor of safety of earth and rock slopes' and is an app in the Photos & Graphics category. There are four alternatives to SLOPE/W for Windows and iPad. The best alternative is GSLOPE. It's not free, so if you're looking for a free alternative, you could try MobiSlope. Other great apps like SLOPE/W are STABL WV (Paid) and Slide2 (Paid).
GSLOPE allows geotechnical engineers to carry out limit equilibrium slope stability analysis of existing natural slopes, unreinforced man-made slopes, or slopes with soil reinforcement. The program uses Bishop’s Modified method and Janbu’s Simplified method.
TerraWiz STABL WV 2008 is a state-of-the-art Windows-based slope stability software that retains all the traditional features of stabl that the geotechnical community has come to value over the almost 30 years of experience with STABL and PCSTABL algorithms but has all the...
MobiSlope is an app designed for the iPad to calculate the factor of safety of earth slopes, using common methods of limit equilibrium analysis. Model complex geometries, pore pressure conditions, tension cracks, surcharge loads, and seismic loading.