A detailed side-by-side comparison to help you choose the right SMS verification service.
Average 8-second delivery time. Most codes arrive before you switch browser tabs.
If the SMS does not arrive, you are automatically refunded. No exceptions, no support tickets.
No email, phone number, or personal information required. Sign in with Google and start immediately.
Broad global coverage with verified operators in every major market worldwide.
Earn a percentage of every referral's spending for life. Not a one-time bonus.
No recycled or shared numbers. Every number routes through verified telecom partners.
Quackr’s free tier is appealing but comes with significant drawbacks: shared numbers that anyone can read, limited country coverage, and no refund policy. QuickSim provides dedicated private numbers across 115+ countries with guaranteed delivery. For any use case where reliability and privacy matter, QuickSim is the clear winner.
See the difference for yourself. Create a free account and get your first verification code in under 60 seconds.
Free to sign up. No credit card required.