RingCentral is UCaaS over softphone. Kelir is UCaaS over cellular.
Comparable feature surfaces. Different delivery layer underneath. Same RingCentral-tier depth — auto-attendant, multi-level IVR, hunt groups, departments, recording, analytics, CRM. Theirs runs as a softphone over Wi-Fi or mobile data; Kelir runs on a real cellular eSIM line.
RingCentral is the canonical UCaaS softphone — comprehensive feature depth, large enterprise customer base, full softphone + desktop + mobile app stack. Kelir ships a comparable UCaaS feature surface (auto-attendant, multi-level IVR, hunt groups, departments, call queuing, recording, analytics, CRM integrations) but delivers it on a real cellular eSIM line instead of a softphone session. RingCentral's strength is enterprise-scale (1,000+ seats, real-time supervision, contact-center add-ons, deep workflow integrations); Kelir's strength is reliability and accessibility for mobile-first 2–50 person teams who want UCaaS depth without softphone failure modes (dropped calls on bad Wi-Fi, app suspension, virtual-number 2FA SMS rejections).
How they compare.
| Compared | RingCentral | Kelir |
|---|---|---|
| Delivery model | ||
| Voice transport | Softphone (Wi-Fi / mobile data) | Cellular VoLTE (PSTN-native) |
| Where the call rings | Inside the RingCentral app | Native dialer (iOS Phone / Android dialer) |
| App must be open to ring | Yes (or push-notification reliability) | No — eSIM line |
| Works without internet | ||
| 2FA SMS reliably accepted | Limited (virtual-number filtering) | Yes — real cellular |
| CarPlay native routing | ||
| Inbound call handling | ||
| Auto-attendant | ||
| Multi-level IVR | 2 levels Starter, 4 levels Pro | |
| Hunt groups | ||
| Departments | ||
| Call queuing with music on hold | ||
| Skill-based routing | Higher tier or RingCX | Team Pro |
| Voicemail & recording | ||
| Voicemail with email transcripts | Every plan including Solo | |
| Call recording (on-demand or always-on) | ||
| Configurable retention | Higher tier | Up to 7 years on Pro |
| Shared department voicemail | ||
| Admin, analytics & integrations | ||
| Web admin portal | app.kelir.io | |
| Per-user / per-dept analytics | Team plans | |
| CRM integrations (HubSpot/Salesforce/Pipedrive) | Team Pro | |
| Real-time supervision dashboard | RingCX add-on | |
| Audit log of admin actions | Team Pro | |
| Compliance | ||
| SOC 2 Type II | Roadmap (Team Pro) | |
| HIPAA BAA | Healthcare tier | Roadmap (Team Pro) |
| US data residency | ||
| E911 enabled | ||
| A2P 10DLC pre-registered | Every line | |
RingCentral information sourced from www.ringcentral.com on 2026-05-05. Plans and prices change; check the source for the current state.
- Enterprise-scale deployments (1,000+ seats) with central IT and dedicated communications operations.
- Contact-center workflows with real-time supervision, sophisticated skill-based queuing, and SLA dashboards via RingCX add-on.
- Deep workflow integrations with enterprise platforms (ServiceNow, NetSuite, custom SAP integrations).
- Video conferencing built into the same platform (RingCentral Video) for unified communications buyers who want one stack.
- Long enterprise track record — platform maturity, certifications, large reference customers.
- Comprehensive analytics and quality-of-service monitoring at the enterprise tier.
- Real cellular delivery — calls ring on the native dialer over VoLTE, not a softphone over Wi-Fi/data.
- 2FA SMS deliverability — every Kelir line is a real US cellular number accepted by banks, payment platforms, and government services.
- Mobile-first / field-based teams — CarPlay routing, lock-screen ring, no app-must-be-open requirement.
- Simpler admin surface for 2–50 seat teams — UCaaS depth without enterprise-scale complexity.
- Lower per-seat cost at the entry tier ($24.99/mo Solo, $29.99/seat Team Starter vs RingCentral MVP Standard).
- No dropped calls from softphone-app suspension, OS-update interference, or Wi-Fi handoff issues.
Side-by-side, USD.
- MVP CoreUp to 100 users; basic IVR, no advanced analytics$30/seatper month, USD
- MVP AdvancedAdds CRM integrations, advanced call handling$35/seatper month, USD
- MVP UltraAdds advanced analytics, file sharing, archival$45/seatper month, USD
- SoloSingle-user UCaaS feature surface$24.99per month, USD
- Team StarterMulti-user PBX layer, 2–50 seats$29.99per seat / month
- Team ProCRM, analytics, audit log, configurable retention$39.99per seat / month
Who should pick which?
You're at enterprise scale (200+ seats), need contact-center supervision (RingCX) and deep workflow integrations with enterprise platforms, want one vendor for voice + video + messaging, and are comfortable with a softphone delivery model over Wi-Fi / mobile data.
You're a 2–50 person team that wants UCaaS-tier depth (auto-attendant, IVR, hunt groups, departments, recording, analytics, CRM) but delivered on real cellular eSIM lines — no softphone failure modes, real cellular reliability for mobile / field-based work, and 2FA SMS that actually works because every line is a real US cellular number.
RingCentral is enterprise UCaaS-over-softphone — mature, comprehensive, contact-center-capable, and best-fit for large central-IT-driven deployments. Kelir is UCaaS-over-cellular — same feature depth at the SMB / lower-mid-market tier, with cellular delivery that solves the softphone reliability and 2FA-SMS problems mobile-first teams actually hit. The choice isn't "which has more features" — feature surfaces are comparable in the 2–50 seat range. The choice is "which delivery model fits how my team actually works."
Common questions
At the SMB / lower-mid-market scale (2–50 seats), feature parity is high — auto-attendant, multi-level IVR, hunt groups, departments, call queuing, voicemail with transcripts, recording, analytics, CRM integrations are all on Kelir. RingCentral has additional capabilities at enterprise scale that Kelir intentionally doesn't ship: contact-center supervision (their RingCX add-on), enterprise workflow integrations (ServiceNow, NetSuite custom), built-in video conferencing (RingCentral Video), and real-time agent supervision dashboards. If you need any of those, RingCentral wins. For the 2–50 seat UCaaS feature surface, Kelir matches.
RingCentral's softphone runs as a mobile or desktop app over Wi-Fi or mobile data. The app can be suspended by the OS, the Wi-Fi can drop or hand off badly, the audio can degrade based on bandwidth. Kelir runs on a cellular eSIM — the line rings on the phone's native dialer over VoLTE, the same way personal cellular calls work. Apps don't need to be open. Wi-Fi outages don't affect calls. The reliability profile matches a personal cellular line.
Kelir Solo $24.99/mo is single-seat (RingCentral has no equivalent — minimum 1 seat at MVP Core $30/mo). Kelir Team Starter $29.99/seat vs RingCentral MVP Standard around $30/seat — roughly equivalent. Kelir Team Pro $39.99/seat vs RingCentral MVP Premium around $35/seat — Kelir slightly higher headline, but Kelir's Pro tier includes things RingCentral charges extra for (configurable retention, audit log included). The bigger cost question is total-cost-of-communication: Kelir's cellular eSIM means each user doesn't need a separate mobile carrier line for work — RingCentral users typically still maintain a separate personal cell.
1–2 week timeline for a 5–25 seat team. The configuration work (rebuilding IVR, hunt groups, departments) takes 2–4 days. Number ports take 1–3 business days per FCC requirements. CRM integration reconnects via OAuth in minutes. The full migration playbook is at /use-cases/migrating-from-ringcentral.
On the roadmap for Team Pro. The architecture is consistent with SOC 2 Type II controls (encryption in transit and at rest, access logging, retention controls); the audit is in progress and the report will be available on request when complete. RingCentral has Type II today — if you need it pre-cutover, that's a real consideration.
RingCentral has RingCX, a dedicated contact-center add-on with real-time supervision, sophisticated skill-based queuing, workforce management, and SLA dashboards. Kelir doesn't ship a contact-center product — Kelir's routing is intentionally narrower, designed for 2–50 person teams that need UCaaS routing without contact-center complexity. If you're running a 50+ agent contact-center workflow, RingCentral (or Five9, NICE CXone) is the right tool. Kelir is for the SMB / lower-mid-market UCaaS use case.