Compare SMS verification services
The temporary number market has a dozen marketplaces that look alike on the surface. These pages explain how each one works and where SMS Nitro differs, without the usual chest-thumping.
What is the best alternative to SMS-Activate?
Any marketplace that offers private numbers, charges only on delivered SMS and keeps an SMS-Activate-compatible API so your tools keep working. SMS Nitro does all three, with live success rates per country and a balance that never expires. The pages below cover each competitor individually.
All articles
- SMS-Activate alternativeSMS-Activate stopped operating at the end of 2025. What it means for your scripts and balance, and how SMS Nitro replaces it with a compatible API.
- Hero SMS alternativeHero SMS is the successor of SMS-Activate. How it compares with SMS Nitro on billing, catalog transparency, API compatibility and support.
- GrizzlySMS alternativeGrizzlySMS runs a very large multilingual catalog of virtual numbers. Where SMS Nitro differs: delivery-only billing, success rate per country, compatible API.
- SMS-Man alternativeSMS-Man offers activations, rentals and an API. How SMS Nitro compares on billing, transparency and developer experience.
- 5SIM alternative5SIM lets you pick the carrier for each number and pays attention to developers. Where SMS Nitro differs and when to use both.
- TextVerified alternativeTextVerified focuses on US non-VoIP numbers. SMS Nitro adds 180+ countries, pay-per-code billing and an SMS-Activate-compatible API.
- SMSPool alternativeSMSPool sells numbers from multiple pools with an API and rentals. How SMS Nitro compares on billing, success data and compatibility.
- OnlineSim alternativeOnlineSim offers activations and rentals in many countries. Where SMS Nitro differs: delivery-only billing, success rates, compatible API.
- SMSPVA alternativeSMSPVA is a long-standing provider with a wide country list. How SMS Nitro compares on billing, transparency and API compatibility.
- DaisySMS alternativeDaisySMS shut down on 26 March 2026. Where its US-number users can go: physical-SIM US pools, 180+ countries, pay-per-code billing, SMS-Activate-compatible API.
- Public SMS inbox sites vs a private numberWhy shared public numbers fail verification on WhatsApp, Google and most apps, and what a private paid number changes: nobody else reads your code.
Frequently asked questions
Why compare at all?
Because prices and success rates differ per app and per country, and the right provider for WhatsApp in Indonesia may not be the right one for Google in the US.
Can I use several providers?
Yes, and many professionals do. The API is compatible with the most common protocol, so switching is a configuration change.
Get your verification code now
Top up from $5, pick an app and a country, and read the SMS in your browser. Charged only when the code arrives.
Get a number+1 (415) 555-0132