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Head-to-head · Virtual Phone Number Services

Zadarma vs KrispCall

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Zadarma #4 in Virtual Phone Number Services 8.7/10 Free plan · 7-day trial Free planFree trial✓ 0 of 3 features Visit Zadarma
KrispCall #7 in Virtual Phone Number Services 8.4/10 Paid ✓ 0 of 3 features Visit KrispCall

Zadarma leads on 1 check, KrispCall on 1, and 0 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreZadarma · 8.7/10
  • Lowest starting priceKrispCall · $12/user/mo
  • Free planonly Zadarma
  • Free trialonly Zadarma

Zadarma scores higher on our rubric for virtual phone number services: 8.7 against 8.4 out of 10; our editors rank them #4 and #7.

Zadarma offers free plan; KrispCall doesn't. KrispCall is cheaper to start at $12/user/mo against $39/user/mo.

Zadarma is the better fit for teams seeking a free-start cloud PBX with global reach. KrispCall is the better fit for teams needing multiple numbers and integrated calling tools.

  • Zadarma fits best

    Teams seeking a free-start cloud PBX with global reach

  • KrispCall fits best

    Teams needing multiple numbers and integrated calling tools

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Zadarma 8.7/10 Visit ↗ KrispCall 8.4/10 Visit ↗
At a glance
Editor score 8.7 8.4
Ranking #4 in Virtual Phone Number Services #7 in Virtual Phone Number Services
Best for Teams seeking a free-start cloud PBX with global reach Teams needing multiple numbers and integrated calling tools
Pricing model Free plan + paid Paid
Starting price $39/mo $12/user/mo (best)
Free plan ✓ (best) —
Free trial 7 days —
Deployment Cloud, Desktop, Mobile, Browser extension Cloud, Mobile, Browser extension
Platforms Web, Windows, macOS, iOS, Android, Chrome extension Web, iOS, Android, Chrome extension
Support Live chat, Phone, Tickets · 24/7 Email, Live chat, Phone · 24/7
Compliance ISO 27001 GDPR, ISO 27001, HIPAA, SSO/SAML
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Zadarma 0/3 · KrispCall 0/3
SMS support Not checked yet Not checked yet
International numbers Not checked yet Not checked yet
Number porting Not checked yet Not checked yet
Specs
Number types Not checked yet Not checked yet
Included numbers Not checked yet Not checked yet
Supported platforms Not checked yet Not checked yet
Our review
Pros
  • Free Standard plan includes cloud PBX, CRM users and four voice menus
  • Call handling spans IVR, queues, routing, forwarding and voicemail transcription
  • Apps, SIP trunking and virtual or toll-free numbers support varied calling setups
  • Starter includes up to five users and one US, UK, or Canada number per user
  • Multi-level IVR, call routing, voicemail transcription, and analytics
  • Available across web, mobile, Chrome, and API, with 100+ integrations
Cons
  • Free plan has only 200 MB of call-recording storage
  • Office World and Corporation plans have monthly and annual prices to compare
  • Plan minutes and number availability vary by region
  • No free plan; the trial requires a card
  • Calling, messaging, numbers, and some add-ons may incur extra charges
  • Windows and macOS desktop apps are listed as coming soon
Our verdict

Zadarma combines virtual phone numbers, cloud PBX and VoIP calling for businesses, call centers and distributed teams. It is suited to organizations that want to manage incoming calls through extensions, voice menus, queues and forwarding,…

Read the review →

KrispCall is a cloud business phone and communication platform for startups, small businesses, sales and support teams, and larger organizations. It combines virtual local, mobile, and toll-free numbers with calling, SMS, MMS, voicemail,…

Read the review →
  1. ZadarmaVirtual Phone Number Services 8.7Free plan · 7-day trial
  2. KrispCallVirtual Phone Number Services 8.4Paid

Strengths and trade-offs

  • Zadarma — where it wins

    • Free Standard plan includes cloud PBX, CRM users and four voice menus
    • Call handling spans IVR, queues, routing, forwarding and voicemail transcription
    • Apps, SIP trunking and virtual or toll-free numbers support varied calling setups

    Where it doesn't

    • Free plan has only 200 MB of call-recording storage
    • Office World and Corporation plans have monthly and annual prices to compare
    • Plan minutes and number availability vary by region

  • KrispCall — where it wins

    • Starter includes up to five users and one US, UK, or Canada number per user
    • Multi-level IVR, call routing, voicemail transcription, and analytics
    • Available across web, mobile, Chrome, and API, with 100+ integrations

    Where it doesn't

    • No free plan; the trial requires a card
    • Calling, messaging, numbers, and some add-ons may incur extra charges
    • Windows and macOS desktop apps are listed as coming soon

More comparisons

All virtual phone number services comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update