The symbol for indicating delivered message resizes buble with the message during sending which is not very nice effect. But there is a lot of space left and no point make the message buble smaller. If you put the symbol to this free space without resizing the buble it will be much nicer :o) ... But I have tested many SMS apps and chompSMS is still the best app for SMS. Is very nice, simple, customizable and easy to use and this is why I bought it :o) ... Keep this way... :o)