Do I need to download an app to use Kinvo?

No. Kinvo works entirely in your browser using WebRTC technology. Just sign up, add credits, and start calling. It works on Chrome, Firefox, Safari, and Edge on any device with a microphone.

How does the Kinvo credit system work?

Buy credits in preset amounts ($5, $10, $20, $50, or $100) or a custom amount. Each call deducts credits based on the per-minute rate for that country plus a $0.05 connection fee (only charged when the call is answered). Credits never expire. Larger packs include bonus credits: $20 pack gets +$1, $50 gets +$5, $100 gets +$15.

What countries can I call with Kinvo?

Kinvo supports calls to over 150 countries including the US, UK, Canada, Australia, India, Germany, France, Japan, Brazil, Mexico, Philippines, and most of Europe, Asia, Africa, and South America. Both landline and mobile numbers are supported.

Is Kinvo call quality good?

Yes. Kinvo uses WebRTC with HD voice codecs for crystal clear audio. All calls are encrypted end-to-end. Call quality is typically better than traditional phone calls, with real-time quality indicators showing latency and packet loss.

Can I use my own phone number as caller ID on Kinvo?

Yes. You can verify your personal phone number through Kinvo's caller ID feature, and recipients will see your real number when you call. You can also purchase virtual phone numbers in the US, UK, Canada, and Australia.

Do Kinvo credits expire?

No. Your credits stay in your account indefinitely until you use them. There are no hidden fees, no monthly minimums, and no expiration dates.

Is Kinvo a good alternative to Skype for international calls?

Yes. Kinvo was built specifically to fill the gap left by Skype's shutdown in May 2025. Like Skype, Kinvo offers affordable international calls with a pay-as-you-go model. Unlike Skype, Kinvo requires no app download — calls are made directly from the browser. Kinvo supports 150+ countries with HD WebRTC voice quality, team accounts, and caller ID verification.

How much do international calls cost with Kinvo?

Rates vary by country. Calls to US and UK landlines start from $0.01/min. Mobile rates are typically higher. There is a $0.05 connection fee per call, charged only when the call is answered. You can check exact rates for any country before you dial. Every new account gets a free 1-minute test call.

What is the cheapest way to call internationally from a browser?

Kinvo is one of the most affordable browser-based international calling services. With rates starting from $0.01/min for popular destinations, no subscription fees, and credits that never expire, it is significantly cheaper than traditional phone plans or calling cards. The pay-as-you-go model means you only pay for the minutes you use.

Does Kinvo support team or business accounts?

Yes. Kinvo offers team accounts with shared credit wallets, member management, per-user spending limits, and admin dashboards with per-member call analytics. Teams are created with a $150 minimum credit purchase, with no seat limits.

Kinvo vs Viber Out: Which International Calling Service Is Better?

Last updated: March 2026

TL;DR

Kinvo and Viber Out are similar in base rates, but they differ significantly in convenience and features. Kinvo works directly in your browser with no download, offers team accounts and analytics, and credits that never expire. Viber Out requires the Viber app, charges a higher connection fee, and credits expire after 180 days of inactivity. For occasional personal calls by existing Viber users, Viber Out is convenient. For regular international calling or business use, Kinvo is the stronger choice.

Kinvo leads in 10 of 16 categories|Viber Out leads in 3|3 tied

Feature-by-Feature Comparison

Feature	Kinvo	Viber Out	Edge
Platform	Browser-based (WebRTC)	Viber app required	Kinvo
App Download Required	No	Yes (Viber app)	Kinvo
Countries Supported	150+	100+	Kinvo
Lowest Per-Minute Rate	From $0.01/min	From $0.01/min	Tie
Connection Fee	$0.05 (on answer only)	$0.09 per call	Kinvo
Credit Expiration	Never expire	Expire after 180 days without purchase	Kinvo
Free Messaging	No	Yes (Viber-to-Viber)	Viber Out
Team Accounts	Yes — shared wallets, spending limits, admin dashboard	No	Kinvo
Call Analytics	Yes, with CSV export	Basic call history only	Kinvo
Caller ID	Verify personal number or buy virtual (US/UK/CA/AU)	Shows Viber number or hidden	Kinvo
Voice Quality	HD WebRTC, E2E encryption	App-dependent, variable quality	Kinvo
Inbound Calls	Not yet	Via Viber app (Viber-to-Viber only)	Viber Out
Video Calling	No	Yes (Viber-to-Viber)	Viber Out
SMS	No	No (messaging via Viber only)	Tie
Infrastructure	Dual provider (Telnyx + Twilio failover)	Viber proprietary	Kinvo
Founded	2025	2010 (Viber Out added later)	Tie

About Kinvo

Kinvo is a browser-based international calling service launched in 2025. It uses WebRTC technology to let users call landlines and mobile phones in over 150 countries directly from any modern browser — no app download required. Kinvo operates on a pay-as-you-go credit system with rates starting from $0.01/min for popular destinations like the US and UK. Credits never expire. A $0.05 connection fee is charged only when the call is answered. Kinvo runs on dual VoIP infrastructure (Telnyx as primary provider with Twilio failover) for 99.9% uptime. Features include team accounts with shared credit wallets and per-member spending limits, custom caller ID verification, virtual phone numbers in the US, UK, Canada, and Australia, and a call analytics dashboard with CSV export. All calls use HD voice codecs with end-to-end encryption.

About Viber Out

Viber Out is the paid calling feature within the Viber messaging app, allowing users to call landlines and mobile phones in 100+ countries. It requires downloading the Viber app and purchasing credits through the app.

Key Differences

Kinvo is browser-based (no download) while Viber Out requires the Viber app installed on your device
Kinvo credits never expire; Viber Out credits expire after 180 days if you don't make another purchase
Kinvo charges $0.05 connection fee vs Viber Out's $0.09 — a $0.04 saving per call that adds up
Kinvo offers team accounts, call analytics, and business features; Viber Out is consumer-only with no team or analytics capabilities

When to Choose Kinvo

+You want to call from any browser without downloading an app
+You need team accounts with shared wallets and spending limits for business use
+You want credits that never expire (Viber Out credits expire after 180 days without a purchase)
+You need call analytics, history tracking, and CSV export
+You want a lower connection fee ($0.05 vs $0.09)
+You want custom caller ID with verified numbers or virtual numbers

When to Choose Viber Out

+You already use Viber for messaging and want calling in the same app
+You prefer an all-in-one messaging and calling app on your phone
+You primarily call other Viber users (free) and only occasionally call phone numbers

Final Verdict

Kinvo leads

Tied

Viber Out leads

Try Kinvo for Free

Sign up in 30 seconds and get a free 1-minute test call to any country. No credit card required. Works in your browser — nothing to download or install.

Try Kinvo Free View Calling Rates

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