Modern MEMS inertial sensors (accelerometers, gyroscopes) realize high-precision outputs previously seen only in very high-cost and bulky applications. MEMS chips are low-cost, small and not power hungry. However, sensor outputs (specific force, rotation rate) require processing to obtain information the application actually needs (orientation, position, etc.). Our algorithm library enables fast way to jump from raw data to required solutions. We also develop hardware tools and reference systems for customer-specific application development.