Have you ever wondered how much you should tip when having dinner in a restaurant? These free tip calculator apps will help you figure out how much you should tip, very fast! In general, we should all tip about 15% to 20% when having lunch or dinner in a restaurant. If the bill already includes a service charge, then you do not need to include any additional gratuity. However, the majority of restaurants leave the gratuity up to your discretion. So, if you eat out and someone serves you, then you definitely need to tip them. According to an articleThe post Top 10 Free Tip Calculator Apps For Your Mobile Device appeared first on Useful PC Guide.