Collects and sells data
App tracks your location
Unable to be monitored
No Terms of Service
What Text Free says, "TextFree is the 2nd phone number app for free texting and free calling app. It gives you free text plus a real US phone number so you can text anyone, even if they don’t have the app. You can text now with features such as free SMS messaging, group messaging, free MMS picture messaging, international texting & calling, voicemail, and more—all for free."
What SGS says, "If your child is using an anonymous texting app then they are doing something they don't want you to know about."