Smart NPK Meter has an easy-to-use interface which can communicate with the farmer in a few steps. It shows a map of the area and the measuring position so the farmers get to apply fertilizer to those exact places at a later date. Farmer can create the field map by walking around the land.He/she can select the measurement locations and the device will measure the Nitrogen, Phosphorus, and Potassium concentrations of the soil on the land. The mobile app will monitor the measurement results via a Report. After taking the measurements, the mobile app recommends the locations where the NPK concentration is not enough and suggests how much NPK is needed. Due to different versions of the maps, It makes the life of a farmer easier to find the different N, P, or K measurements once at a time. It also has Sinhala and English language support.Note: To use this app, the user must have a Smart NPK device.The app includes all the cool features such as: 1. Create Field Map 2. Measure NPK readings 3. View Report 4. View Recommendations based on measurements 5. Collects data remotely 6. Cloud database