OnSIP vs Quo
OnSIP
onsip.com
Quo
quo.comSide by side
| Figure | OnSIP | Quo |
|---|---|---|
| Price from | $18.95/mo | $15/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | — | Yes |
| Plans published | 4 | 3 |
| Spec score · Business Phone Systems | 9.2 (#8) | 9.2 (#5) |
| Auto attendant | Yes | Yes |
| Business numbers | multiple | multiple |
| Call routing | custom | The service provides call routing, simultaneous ringing, ring orders, forwarding and warm transfers. |
| Desktop and mobile apps | Yes | Yes |
| Founded | 2004 | Quo, formerly OpenPhone, was founded in 2018 by Mahyar Raissi and Daryna Kulya. |
| Free plan | Yes | No |
| Headquarters | Sunnyvale, California, United States | LinkedIn lists Quo headquarters in San Francisco, California. |
| CRM integrations | Available integrations include HubSpot, Odoo, Zendesk, and an Open API. | The integration directory lists HubSpot, Salesforce, Jobber, Pipedrive, Zoho CRM, Attio, Clio, Slack, Zapier, Make, Gong, ChatGPT, Claude and others. |
| Paid from | 18.95 | 15 |
| Supported platforms | Apps are available for Windows, Mac, web, iPhone, and Android. | Official downloads are provided for macOS, Windows, iOS, Android and the web app. |
| Voicemail transcription | Yes | Yes |
Plans
OnSIP
- Free PlanFree
- Unlimited$18.95 a month
- Basic$49.95 a month
- Pay-as-you-go$49.95 a month
In their own words
OnSIP
OnSIP is a business phone system with multiple business numbers, an auto attendant, custom call routing, and voicemail transcription. It provides desktop and mobile apps as well as a browser softphone, available in Chrome, Firefox, and Opera. Apps are listed for Windows, Mac, iPhone, and Android. The free plan supports up to 100 users and unlimited extensions, and includes Zendesk, HubSpot, and Odoo integrations. Free SIP accounts cannot dial regular phone numbers; paid plans offer a SIP-to-PSTN gateway. Paid plans start at $18.95/user/mo, and a 30-day trial is listed. Month-to-month contracts are available, with payment based on users and features. A SIP address can have active registrations on up to 10 devices. Softphone apps provide end-to-end encryption, and encryption is also available for desk phones. When both parties use the OnSIP app, professional call-link media is encrypted using DTLS SRTP. The Admin Portal supports setup, real-time feature edits, payment and contact management, and invoices.
Quo
Quo is a paid business phone service with web, Windows, macOS, iOS and Android support. It offers desktop and mobile apps, multiple business numbers, an auto attendant, custom call routing and voicemail transcription. Quo has no free plan, but a seven-day trial is listed. Its pricing note gives a starting rate of $15/user/mo on an annual term. Separately, monthly plan listings show Starter at $19 a month, Business at $33 a month and Scale at $47 a month. Each of those monthly listings includes one phone number per user and 1,000 free automation credits. The annual starting-price note and monthly plan figures are distinct details, so readers should check which billing term applies to their choice. With support for five listed platforms and both mobile and desktop apps, Quo provides business calling across a range of devices. Its call-handling options include routing calls and directing callers through an auto attendant.