With just 2 apps, you can completely turn your iPod to a iPhone with no monthly cost.
** This will ONLY work in a Wi-Fi area. this will not substitute a mobile cell-phone in anyway, so only expect it to be used at-home or at that computer-illiterate person's home who hasn't pass-protected their Wi-Fi. **
This is handy for replacing a home-phone or helping save on prepaid cell-phone minutes, though.
Or if you lose your phone. Which happens to me more then a lot.
Step 1: Calling - VoIP
App name: iCall free VoIP
Company: iCall inc.
Space required: 1.9mb
** NOTE: Only iPod 3G have built-in microphones. If you have a 1G or 2G iPod Touch, you have to buy a microphone that fits in the headphone jack. You can buy a nice one at RadioShack for only about $10 though. **
Other apps that work: TextPlus with Voice handy, becuase it also features texting.
Step 2: Texting - TextNow
App name: TextNow - Unlimited Free Texting (SMS)
Company: Enflick, Inc
Space required: 9.7mb
Other apps that work: TextPlus, TextFree
Step 3: There You Have It!
TextPLUS with Voice features texting and calling. However, I recommend using VoIP and TextNow or TextPlus. Not only is it prettier, VoIP is cheaper and better quality than textplus, and textplus texting SOMETIMES (but rarely) fails to recieve or send a text.