OnSIP review (2026): is it worth $18.95 a month per user?
Hosted VoIP phone system with per-feature pricing
Black Friday: is there a OnSIP sale?
OnSIP report card
Fair · out of 4.0 · graded Nov 12, 2026
Best for small offices that want phones in a per-user price
OnSIP is a hosted business phone service with phones included in a $18.95 per-user plan, sold month to month. But the plan needs 5 users, call recording and enhanced queues are paid add-ons, and the sign-up page says it does not serve anywhere outside the U.S. and Canada.
Who OnSIP is for
- Fits if you run a small office of five or more in the U.S. or Canada and want desk phones in the price
- Works for teams that already own SIP phones and would rather pay per feature
Who OnSIP is not for
- Skip it if you have fewer than 5 users, because Unlimited has a 5-user minimum
- Not for you if you are outside the U.S. and Canada, which the sign-up page says it does not serve
- Pricey if you need recording or queues, at $4.95 and $14.95 per user a month on top
- Watch out: E911 is $1.80 per user a month and each extra number is $2.00
- Watch out: there is no free plan and no trial
Why OnSIP gets a 2.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for money$18.95 per user a month with a 5-user minimum, against a category middle of $19. The $49.95 pay-as-you-go account bills calls at 3.2 cents a minute on top.
- FFree plan and trialNo free plan and no trial on record. The listing shows only the paid Unlimited and Pay-as-you-go accounts.
- CFeaturesAuto attendants, ring groups, ACD queues, SMS and MMS are all listed. But recording is $4.95 per user a month, enhanced queues $14.95 and E911 $1.80, so the basics come with a meter.
- CEase of useNo store rating on record. It needs phones or apps set up, auto attendants and rules built, and each feature switched on and priced.
- APlatforms and integrationsSoftphone apps for Mac, Windows, Linux, iOS and Android, a browser app and any SIP device, plus HubSpot, Zendesk and Odoo and an open API.
What these grades rest on. Graded from this listing, whose facts were read from OnSIP's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/onsip#review"><img src="https://toolgpa.com/badge/onsip.svg" alt="OnSIP: 2.0 GPA on ToolGPA" width="196" height="56"></a>Where OnSIP stands among business phone systems
OnSIP's GPA of 2.0 is higher than 9 of the 44 other business phone systems we grade, and level with 10.
It stands best on platforms and integrations (A, above 27 of 44) and worst on free plan and trial (F, above 0).
Its paid plans start at $18.95 a month for each person, against a middle price of $19 for the category: 13 of the 32 others that charge start lower.
On features, ease of use and platforms it scores 2.7 out of 4. 4 tools score higher and cost less.
Each grade against the category
Every bar is all 45 business phone systems we grade, cut by the letter each got. OnSIP’s own letter is outlined.
- CValue for moneyAbove 5 of 44, level with 29
- FFree plan and trialAbove 0 of 44, level with 23
- CFeaturesAbove 1 of 44, level with 24
- CEase of useAbove 4 of 44, level with 30
- APlatforms and integrationsAbove 27 of 44, level with 17
Price against what you get
Each dot is one of 34 business phone systems. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep OnSIP, or make your own?
Keep it
To replace OnSIP you would be making phone numbers and calls carried over the phone network. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 25 of the 44 other business phone systems grade higher. It costs $227.40 a year.
What you could not
- Phone numbers and calls carried over the phone network.
- Texts from a business number, registered with the carriers.
- Apps for macOS, Windows, Linux, iOS and Android that stay in step with each other.
- It is priced for each person, which means accounts and billing for a team.
- It plugs into other products, HubSpot, Zendesk and Odoo among them, and has an API.
What this rests on. OnSIP’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is OnSIP?
OnSIP is a hosted business phone service sold as a per-user unlimited plan or a pay-as-you-go account, with individual features added and priced one by one. It covers auto attendants, ring groups, call queues, SMS and MMS, and works with SIP phones and its own apps.
Worth knowing
- Unlimited needs at least 5 users; the Pay-as-you-go plan does not include calling minutes.
- Many features are paid add-ons: call recording is $4.95 per user a month and enhanced queues $14.95 per user a month.
- E911 is $1.80 per user a month and each extra phone number is $2.00 a month.
- The sign-up page says OnSIP does not service locations outside the U.S. and Canada.
Key features
- Call handling
- Auto attendants, business-hour rules, ring groups, call parking, transfers, call screening and a dial-by-name directory.
- Call center options
- ACD queues, live queue dashboard, historical reporting, and monitor, whisper and barge, with queue features priced per user.
- SMS and MMS
- Business texting from your number in the apps; the Unlimited plan includes 250 messages per account, with 1 cent overage.
- Apps and phones
- Softphone apps for Mac, Windows, Linux, iOS and Android, a browser app, and any SIP-enabled device.
- Integrations
- Connections to HubSpot, Zendesk and Odoo, a Chrome extension, and an open API.
- Month-to-month terms
- The site describes month-to-month contracts with onboarding included, and lists each add-on feature with its own rate.
OnSIP pricing
As of Nov 12, 2026, OnSIP is a paid product, starting at $18.95 per user / month (5-user minimum).
- Starts at
- $18.95 per user / month (5-user minimum)
- Free plan
- None
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Unlimited | $18.95per user / month, 5-user minimum | Unlimited standard calling, VoIP phones included, unlimited auto attendants, ring groups and recording users. |
| Pay-as-you-go | $49.95per month for the account | For low call volume: calling billed at 3.2 cents a minute, 1 auto attendant, 3 recording users, inbound SMS and MMS. |
Read from onsip.com on Nov 12, 2026. Prices change, so confirm with OnSIP before you buy.
Works with
OnSIP alternatives
- OnSIP vs Ooma Office
From $19.95/mo
- OnSIP vs Nextiva
From $15/mo
- OnSIP vs RingCentral
Free trial · from $20/mo
- OnSIP vs Vonage Business Communications
From $19.99/mo
Common questions
Is OnSIP open source?
OnSIP is not described as open source on its own site, as read on Nov 12, 2026.
Does OnSIP have an API?
Yes. OnSIP offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 12, 2026.