| iPhone VoIP App Comparison The First Dual-Mode, Professional-Grade Calling App for the iPhone |
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| Features | Line2 | Skype | Vonage | iCall | TruPhone | Fring |
| Separate Number (Two Numbers on One Phone) | Yes | Yes | No` | Yes | No | No |
| Receive Inbound Calls | Yes – WiFi or Cellular | Only Via Cell Forwarding | No | Wi-Fi Only | No | Only Through Cell Forwarding or SIP Integration |
| Place Outbound Calls | Yes – WiFi or Cellular | WiFi and 3G Only | Yes – WiFi or Cellular | Wi-Fi Only | Yes – WiFi or Cellular | Only Through Cell Forwarding or SIP Integration |
| Support iOS4 Backgrounding | Yes | Yes – Limited | No | No | No | No |
| Business PBX Features (auto-attendant, multi-line support, unified billing, etc) | Yes | No | No | No | No | No |
| PC/Mac Calling Via Integrated Softphone | Yes | Yes | Not Integrated with Mobile App | No | No | No |
| Call Screening / Call Announce / Caller ID Based Routing | Yes | No | No | No | No | No |
| Visual Voicemail w/ Voicemail by Email | Yes | Yes – Limited | No | No | Only for Calls from Other TruPhone Users. No Email | No |
| Texting with any SMS-Capable Phone | Not Currently | Limited – Outbound Only, Pay Per Message $.11/text | No | No | Limited – Outbound Only, Pay Per Message $.20/text | No – SMS Limited to Fring to Fring Texts |
| Others Can Text You First | Not Currently | Limited – Sent Through iPhone Carrier Number Not Skype | No | No | No – Only Truphone to Truphone Texts | No |
| Receive SMS Replies | Not Currently | No | No | No | No – Only Truphone to Truphone Texts | No |
| Price for Phone Number, Voicemail, Unlimited US/Canada Calling, and Other Features | $9.95/month | $6.95/month | $24.95/month. Some International Destinations. Excludes Inbound Calls | $9.95/month | $17/month. Some International Destinations. Excludes Inbound Calls | Free with Ads |
| Advanced Call Control Features for VoIP calls | Yes | No | No | No | No | No |
| Call Waiting | Yes | No | No | No | No | No |
| Call Hold | Yes | Yes | Yes | No | No | No |
| Call Swap | Yes | No | No | No | No | No |
| Call Transfer | Yes | No | No | No | No | No |
| Conferencing | Yes – 20 people | Cannot Initiate | No | No | No | No |
| SpeakerPhone | Yes | Yes | No | No | Yes | No |