i live in canada and i can text my us friends no problem because my plan allows it but they cant, so i got myself an app that gave me a us number so they can text me and i can text them no issue, expect the app itself has became really bad lately (textfree), i was wondering is there any good app out there that can let me text my friends without issue because the app i have right now (textfree) crashes or has servers not available a lot as well a big number of publicity, i don't mind paying for an app that can offer me this service as long its unlimited texting and not 10 text for 5$ kinda.. i read somewhere that heywire is ok but any thought?

thank