SMS sender 4+

I don't see the point in using this app when you have to press 'Send' from your iPhone. If it's a legal issue, then why not just add an EULA where a 'permission to send' is stipulated in the terms and agreement up front? A pointless update is added for storing message history in the SMS Sender. Why, when you have to go to your iPhone to send the message AND view all incoming messages, anyway? Another issue is, the client app disconnects once the phone sleeps. Just have the app run in the background! This app his been around for quite some time now, and no true major updates have been added to make it worthy to use. I give it ONE STAR because (for its price) it has these major issues - therefore eliminating any purpose in its use. It's very painful and this app makes no sense. Fix the SEND issue!!!

Most of the reviewers are pretty critical because they seem to want their Mac to act as a "dumb terminal" for the iPhone and allow them to, essentially, operate the iPhone from the Mac. This app will not do that. Nor will it seemlessly send texts to your phone to be sent to another phone and, then, have the other person's responses to your texts show up on your iMac.

What it will do, however, is allow you to type long, long texts on your iMac, send them to the SMS app on your iPhone, and then hit send on the iPhone to get the message out. For me, this was worth the $1.99 because (a) I had an extremely long message to send and (b) I wanted to insure that the response came back to my iPhone rather than to some other "internet type of SMS service which allows you to send texts from your computer."

I would hope that future versions of this app would incorporate some of what the critics are asking for. Even without those added features, this app is very useful.

All these reviews knocking this app for not doing something it never claimed to do in the first place. The description is clear that it sends messages through the iPhone, not through the mac itself. Read the description of an app before buying, folks. That's why it's there.
Anyway, I gave it four stars, not because it is spectacularly useful, but because it performs as advertised. However, for typing into your iPhone from your Mac, I'd recommend something much more flexible and useful, Like type2phone or iKeyboard. These apps turn your mac into a Bluetooth keyboard for your phone. You can type into any app, not just text messages. Both are found here in the Mac App Store, and don't require a companion iPhone app. They are more expensive than this app, so if you only need to type text messages this way, it gets the job done nicely.