Many local service startups are preferred to be app only. Uber and Whatsup were apps only from the beginning. Startups like Hungry Bells decided to launch only as a mobile app. The founder says The expectations of the customers change with bigger screens. Customers find hand-held devices more comfortable. The other advantage is that it is easier for startups to concentrate on a single platform with mobile apps and it is bit complex to maintain both. Technically it requires lot of manpower as compared to mobile apps. Some startups app uses bluetooth and GPS technology which cannot be used on a website.