The honest version first
Grasshopper prices by account rather than by user. Plans start at $14 a month billed annually, and Solo Plus at $32 a month or $25 billed annually carries unlimited users. If what you need is one business number that several people can answer, that is genuinely cheaper than paying per user, and we are not going to argue otherwise.
Their trial also asks for no credit card, where ours does. We verify identity at signup because numbers issued without a check get flagged by carriers as likely spam, which is why a brand-new number can show as "Scam Likely" on its first call. That is a real reason, and it is still a worse first experience than theirs.
The question is what you are buying. Grasshopper prices numbers and extensions as the units. SoundLine prices users, and gives each business you run its own full identity.
How they compare
Compared against Grasshopper's published pricing and competitor pages, 22 October 2026.
| SoundLine | Grasshopper | |
|---|---|---|
| Pricing model | Per user | Per account, flat rate |
| Entry price | $19.99 per user monthly, $14.99 annual | From $14 per month billed annually |
| Named mid tier | Growth, $33.33 monthly, $24.99 annual | Solo Plus, $32 monthly, $25 annual |
| Users included | Priced per user | Unlimited on Solo Plus and above |
| Additional numbers | $4 on Growth, $5 on Starter | $9 each |
| Additional extensions | Included with a user | $3 each |
| Free trial | 7 days, card required | 7 days, no credit card |
| Texting | 1,000 outbound per user per month, pooled | Unlimited, per their pages |
| Several businesses, one account | Separate identity for each | Additional numbers at $9 each |
| Operating its own network since | 2008 | Not published |
Three things that decide it
How many people, and how many businesses. This is the arithmetic that settles most of these decisions. Four people answering one business number is cheaper on Grasshopper's flat rate. One person running three businesses is cheaper with us, and the three businesses get separate greetings, routing and voicemail rather than three numbers pointed at the same place.
Whether a number is the whole requirement. Grasshopper sells a business line and sells it well. SoundLine includes video meetings on every plan and appointment scheduling from Growth, in the same subscription, which for most founders replaces two other bills. If you already have and like those tools, that difference is worth nothing to you.
What happens when the business grows a floor. Desk phones at a counter, an IVR, hunt groups, hours of business, a support line answered by a person in the United States. Those arrive later for most businesses, and they are the things that are awkward to add afterward.
When Grasshopper is the better choice
If you want one business number that several people can answer, on a flat rate, with no per-user cost and no card required to try it, Grasshopper does exactly that and does it cleanly. If your texting volume is high, their published unlimited texting beats our fair-use allowance. And if you want a vanity number, that is a product they lead with.
Choose SoundLine if you run more than one business, if video and scheduling in the same place would retire other subscriptions, or if desk phones and routing are somewhere in your next twelve months.
Questions founders ask
Is Grasshopper cheaper than SoundLine?
For several people sharing one business number, usually yes, because Grasshopper is flat-rate with unlimited users while we charge per user. For one person running more than one business, usually not, because additional numbers are $9 each with them and $4 with us.
Does Grasshopper charge per user?
No. Their published plans are flat rate with unlimited users on Solo Plus and above, and they charge for additional numbers at $9 each and additional extensions at $3 each instead.
Does SoundLine include video meetings?
Yes, on every plan, along with appointment scheduling from Growth, which is part of why the comparison is not only about the monthly line cost.
Can I run two businesses on one account?
On SoundLine yes, with a separate number, greeting, routing and voicemail for each, on every plan.
Why does SoundLine ask for a card on the trial?
Identity verification. Numbers issued without a check get carrier-flagged as spam, which is why they stop connecting. The card is not charged until the trial ends and canceling takes two clicks.
Try both, if you like
Grasshopper's trial costs you nothing but seven days. So does ours.