By Sarah Klein · Tech journalist · 2026-09-07 · 8 min read
I get asked to compare these two a lot, and the honest answer usually starts with a question back: where do you live? That single fact decides most of this comparison before we get to features. Google Voice is a genuinely good product. G100 is a newer, smaller one. But they solve the problem for different people, and pretending otherwise would waste your time.
So here's a fair look at both, with the seams showing.
Let me credit Google Voice properly, because it deserves it. For a US resident who wants a second number, it's hard to beat. It's free for personal use. It's mature — it has been around long enough that the rough edges are gone. Voicemail transcription is good. It ties into your Google account, so calls, texts and voicemail show up neatly next to the rest of your Google life, on your phone and in the browser.
If you're in the United States and you want a free line to hand out instead of your personal cell, Google Voice is the sensible default. I wouldn't argue you out of it.
Google Voice needs a US-based setup. During registration it asks you to link an existing US phone number. If you don't have one — because you live in India, Nigeria, Pakistan, Bangladesh, Kenya, Egypt or Morocco — you can't complete signup. Not "it's harder." You can't do it.
This is where the free-and-polished story runs out for most of the world. Millions of freelancers, sellers and small businesses outside the US want a US number for exactly the reasons Americans do: reach US customers, look local, keep a personal line private. Google Voice simply isn't on the table for them. The product is excellent and the door is locked.
There's a second, quieter gap even for people who can get in. Google Voice does not reliably work for WhatsApp Business registration, and it was never built as a business-first tool for non-US users. If your plan involves WhatsApp — and for a huge share of the world, business messaging is WhatsApp — that matters.
G100 is a US-registered service built for the people Google Voice leaves out. You can buy a dedicated US or Canada number from anywhere in the world. There's no KYC hurdle to get started, and the numbers are WhatsApp-ready — meaning they can receive the verification code Meta sends when you register WhatsApp Business.
Pricing is a flat $1.95/month per number, with pay-as-you-go usage on top: calls run $0.03/min, and you top up a wallet in USD through Stripe (UPI is supported for India). If you want the official WhatsApp Business Cloud API for a shared team inbox and broadcasts, that's an optional $10/month. Calls, SMS and WhatsApp live in one dashboard, in the browser and on mobile.
I'll be straight about the trade-offs. G100 is newer and smaller than Google — it doesn't have a decade of polish or a Google-sized ecosystem behind it. And one feature isn't live yet: outbound SMS sending. Receiving SMS and OTP codes works today, which covers verification and login codes, but sending texts is coming later, after 10DLC registration. If sending SMS right now is a hard requirement, know that going in.
| G100 | Google Voice | |
|---|---|---|
| Availability | Sign up from anywhere in the world; no KYC. Numbers for US, Canada & Puerto Rico. | US-based setup required — needs a US number to link. Not available from India, Nigeria, Pakistan, Bangladesh, Kenya, Egypt or Morocco. |
| Price | Flat $1.95/month per number + pay-as-you-go wallet (USD via Stripe, UPI for India). | Free for personal use in the US. |
| WhatsApp registration | WhatsApp-ready numbers; optional Business Cloud API at $10/month. | Doesn't reliably work for WhatsApp Business. |
| SMS send / receive | Receives SMS & OTP today. Outbound sending not live yet — coming after 10DLC. | Send and receive within its supported region. |
| Calls | Browser + mobile calling at $0.03/min. | Free US calling; polished, mature app. |
| Ecosystem / integration | One dashboard for calls, SMS and WhatsApp. | Deep Google integration; voicemail transcription. |
| Best for | Anyone outside the US who needs a WhatsApp-ready US/Canada number for business, cheaply. | US residents wanting a free personal second line inside Google's ecosystem. |
The decision is cleaner than most head-to-heads. If you're already in the US and you want a free personal second line that folds into your Google account, use Google Voice. It's the better tool for that job, and G100 isn't trying to win that customer.
If you're outside the US, or your work runs on WhatsApp, or you want a US number without linking an American phone you don't own, Google Voice isn't available to you at all — and that changes everything. G100 is the option that actually works: a WhatsApp-ready US or Canada number, bought from anywhere, at a flat $1.95 a month. Just go in knowing outbound SMS isn't live yet.
Both can be true at once. Google Voice is a fine product that happens to be out of reach for most of the planet. G100 is the younger option built specifically for the people standing outside that locked door. You can start at app.g100.us and read the full breakdown on the pricing page.
Can I sign up for Google Voice from India, Nigeria or Pakistan?
No. Google Voice requires a US-based setup, including a US phone number to link during registration. It isn't available to sign up from India, Nigeria, Pakistan, Bangladesh, Kenya, Egypt or Morocco. G100 lets you buy a US or Canada number from anywhere, with no KYC.
Is Google Voice or G100 cheaper?
Google Voice is free for personal use in the US, so on price alone it wins for US residents. G100 charges a flat $1.95/month per number plus pay-as-you-go usage. The catch is availability — Google Voice's free tier only exists if you can complete the US-based setup.
Does Google Voice work for WhatsApp Business registration?
Not reliably. Google Voice is built around Google's own ecosystem and isn't a business-first tool for non-US users. G100's US and Canada numbers are WhatsApp-ready and made to receive the verification code Meta sends.
Can G100 send outbound SMS?
Not yet. G100 receives SMS and OTP codes reliably today. Outbound SMS sending is coming after 10DLC registration. If sending texts right now is essential, factor that in.
Which should I choose in 2026?
If you live in the US and mostly want a free personal second line with tight Google integration, Google Voice is the better fit. If you're outside the US, or you need a WhatsApp-ready US number for business at a low flat price, G100 is the option that actually works for you.
No US phone required, no KYC. Calls, SMS & WhatsApp in one dashboard.
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