Looking for a business phone number for calls, texts and WhatsApp? Here's an honest look at how G100 compares to popular second-number apps — and where each one fits.
| Capability | G100 | Vyke | OpenPhone | Google Voice | TextNow |
|---|---|---|---|---|---|
| Dedicated business number | ✓ | ✓ | ✓ | ✓ | ✓ |
| Calls in the browser | ✓ | ✓ | ✓ | ✓ | ✓ |
| SMS & OTP inbox | ✓ | ✓ | ✓ | ✓ | ✓ |
| WhatsApp-ready number included Cloud API +$10/mo | — | — | — | — | |
| Pay-as-you-go, no contract | ✓ | ✓ | — | ✓ | ✓ |
| Keeps personal number private | ✓ | ✓ | ✓ | ✓ | ✓ |
| Pays in USD (Stripe) | ✓ | — | ✓ | — | — |
Comparison reflects G100's own product and the general category of each alternative. Competitor features and pricing change over time — always check their current site. G100 is not affiliated with Vyke, OpenPhone, Google Voice or TextNow. Last verified: Sep 12, 2026 (G100 pricing & WhatsApp paths).
Most second-number apps do calls and texts only. G100 numbers are WhatsApp-ready out of the box ($1.95/mo). Need bulk marketing? Add official Cloud API for +$10/mo (shared inbox, broadcasts, templates).
No monthly seat lock-in. Pick a number, add balance, pay for what you use. Numbers a flat $1.95/month, WhatsApp an optional $10/month add-on.
G100 is built to work globally and bills in USD via Stripe (cards) — handy if apps like Google Voice or US-only carriers aren't an option for you.
Honest take: if you only ever need US calls and texts and already live in Google Workspace, Google Voice may be enough. If you want a team calling system with heavy US telephony, OpenPhone is worth a look. Choose G100 when you want one simple, pay-as-you-go number that does calls, SMS/OTP and WhatsApp Business together — while keeping your personal number private.