Workers are required to undergo periodic certifications on industrial safety and labor protection. Today, the preparation for certification, like the certification itself, takes place on a computer — it is necessary to respond to tests in an electronic program. On average, training lasts 2 weeks, 2 hours a day. At this time, the employee breaks away from the workflow and goes to the place of training, spending an average of 30 minutes or more on the road (“rush hour”, distance from the place of training). A waste of time on the road is an avoidable moment. To save time and convenience for employees, a mobile app for training and testing has been developed, which allows preparing for certification from any smartphone. The program is easily modified and expanded, which is important when the rules and regulations change.