Ключевые слова: analysis, app, background, business, button, check, choice, client, communication, concept, consumer, customer, efficiency, excellence, excellent, feedback, good, group, hand, happy, icon, improvement, loyalty, market, marketing, men, office, opinion, people, performance, positive, quality, questionnaire, ranking, rating, reliability, report, review, satisfaction, service, sign, smartphone, strategy, success, support, survey, symbol, tick, white, women,