Kelir is a US business mobile number on an eSIM. Calls and SMS run on the cellular voice network with VoLTE HD codecs, so the line rings on your phone's native dialer the same way a personal cellular line does. There's no softphone, no Wi-Fi dependency, no app to keep open. Solo plan is $24.99/month. Team plans (Starter $29.99/seat, Pro $39.99/seat) cover 2–50 person businesses with hunt groups, IVR, and departments.
The product exists because eSIM and VoLTE became universal in the US over the last few years, which made cellular-grade business numbers economically possible at small-business price points for the first time. Before, the only way to get a business phone system at $25/month was VoIP — a software phone running on Wi-Fi or data, with all the failure modes that brings. Now, a real cellular line is a fair comparison. That's the entire pitch.
From a Sangam-era Tamil poem.
The brand name comes from a Tamil poem in the Purananuru, written in the Sangam era around the 6th century BCE — older than most languages still spoken today. The line reads: "Yaadhum oore, yaavarum kelir" — every place is your home, everyone is your kin.
The line survives because it captures something true about communication — connection that belongs to the person, not to the place or the platform. A business number that travels with you, that rings the same way wherever you are, that you can take with you when you leave, fits that idea.
The icon — ே — is a Tamil character (U+0BC7) rotated 90° clockwise. It reads as a phone handset. Same letter that closes the word Kelir.
The infrastructure beneath.
Kelir's cellular interconnect runs through Telnyx — a US-based wholesale carrier with direct VoLTE relationships across the major networks. Compute, storage, and database services run on AWS in us-east-1: ECS Fargate for application services, RDS for PostgreSQL, ElastiCache for Redis, S3 for media. Payments are processed by Adyen. Email by AWS SES. Push notifications by Firebase Cloud Messaging.
All compliance posture is documented at /security.
- Sales:sales@kelir.io
- Support:support@kelir.io
- Press:press@kelir.io
- Security:security@kelir.io