Our take, in brief

Zadarma is a regional PBX-bundle candidate; RingCentral is a broader communications-suite candidate; Grasshopper is a simpler business-number candidate. Choose the model first, then compare the final quote.

Three ways to handle business calls

Published pricing and important trade-offs
Option & fitPrice snapshotWatch out for
ZadarmaConfigurable PBX with regional bundlesOffice USA/Canada: $44 per 30-day plan10 users does not mean 10 simultaneous unlimited outgoing calls.
RingCentral RingEXTeams combining calls, meetings and chatCore: $20/user/mo annually; $30 monthlyPer-user pricing grows with headcount; taxes and other fees may apply.
GrasshopperA separate business identity on your existing phonePricing page advertises plans from $14/moVerify the billing term and user/number allowances for your chosen plan.

USD unless noted. Annual prices are monthly equivalents paid upfront; products have different scopes. On a small screen, scroll the table sideways.

The pricing units are different

Zadarma’s Office USA/Canada page lists $44 per 30-day plan with 10 PBX/CRM users. RingEX Core is $20 per user per month paid annually, or $30 on monthly billing. Grasshopper’s pricing page advertises an entry point of $14/month; verify its billing term and number, extension and user limits for the selected plan.

For five RingEX Core seats, the annual rate is $1,200 per year before taxes and fees. Zadarma’s advertised annual-prepayment equivalent is $468 per year for its Office USA/Canada bundle. Those examples are arithmetic from published prices, not equivalent feature quotes. Zadarma’s regional currency note is inconsistent with its dollar display; confirm the final currency and total.

For a solo consultant

If you mostly want to stop giving clients your personal number, start by examining Grasshopper’s number, forwarding, voicemail and app workflow. A large PBX bundle or a collaboration suite can be unnecessary. Check texting availability and registration costs before moving a number used by customers.

For a small team handling a shared line

Zadarma’s bundle is worth evaluating when extensions, regional calling and a shared phone structure are the priority. Work through simultaneous call limits: its 10 users and four unlimited outgoing channels are not the same measure. Grasshopper also describes shared numbers and inboxes on team plans; check which plan includes the access and routing you need.

For a team that also needs meetings and integrations

RingEX includes calls, meetings and chat in its Core plan, with CRM integrations on Advanced. That can make the larger per-seat bill easier to justify if it replaces other tools. Do not assume advanced integrations or AI reception are included in Core: RingCentral lists AI Receptionist as an add-on.

Before making the final decision

Request a quote for your user count, numbers, expected destinations, call concurrency, SMS and recording retention. Confirm emergency calling, porting and business verification. Try each shortlisted service on your actual network using a temporary number. We have not performed hands-on call-quality or support testing, so this comparison does not rank reliability.

Explore Zadarma

Sources & research notes

Official vendor pages checked November 10, 2026. Prices and features are snapshots, not live quotes. Confirm location, currency, billing term, taxes, fees and eligibility with the provider.

No paid test accounts were used. We have not independently verified vendor performance claims. Our method →