Irrigation scheduling software and apps account for different soil types and moisture levels by using algorithms that consider factors such as soil texture, structure, and water-holding capacity. These algorithms can be based on established models, such as the FAO-56 Penman-Monteith model, which estimates evapotranspiration rates based on soil type, climate, and crop characteristics. Users can input soil type and moisture level data, which the software or app then uses to adjust irrigation schedules and ensure that plants receive the right amount of water. Some advanced systems may also integrate with soil moisture sensors, which provide real-time data on soil moisture levels, enabling even more precise irrigation scheduling.