This could be an excellent app. However, it takes too long to load each time I use it - up to 4 seconds (iPhone 6 plus with latest OS version). At first just a bit irksome but after a while I found myself going back to the native, instantly opening, iPhone app. Also there are multiple lines of text for each entry which limits the number of contacts visible on the screen at once. An option to turn this off or just list one line would really help. Groups integration etc are superior to native app as mentioned in other reviews. So this is a backup app for me on page 3 of my phone to be used only when those functions not available in the native app are needed. Speed up the app and have options for font size/ number of lines displayed and it may go up in rating.
jg2346 about A2Z Contacts - Group Text App