App for Design and Analysis of offshore jacket on-bottom stability during installation. It includes pile add-on model with two user editable pile make-up. Seven (7) types of market available hammers are included to enable user analysing on-bottom stability with combination of pile and hammer loads. The App will calculate the soil bearing stresses based on effective mudmat area. An efficient algorithm is utilised to determine the effective area due to vertical gravity force in combination with overturning moment. Omni directional wave/current direction can be simulated to get the soil bearing stresses. A table and graphical presentation of Safety Factors will be shown simultaneously during simulation. Two conditions of pile on the jacket: hang-on or lean-on are available in the simulation.