
SMS-man.com
Smspva
AnonymSMS
HeroSMS
Temp SMSS
Buynumber.io
SMSCode.gg
Temporary Phone Numbers & Virtual Numbers for SMS Verification

SMS-man.com
HeroSMS
flo-voice1.com
GlowSMS
Legitsms
Major Phones
Non Voip App
Get Global Virtual Phone Numbers for SMS Verification with Non-VoIP and VoIP Options. Best temporary phone number service.

Which is more popular?
Based on our record, quackr seems to be more popular. It has been mentioned 49 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | quackr.io | ffsim.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United Kingdom | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


Quackr provides temporary phone numbers, temp numbers, and virtual numbers to receive SMS verification online without a physical SIM card.
FFSIM – Global Virtual Phone Numbers for SMS Verification FFSIM is an online platform providing Non-VoIP and VoIP virtual phone numbers for SMS verification across multiple countries. It offers an affordable and convenient solution for online registrations, OTP verification, and supported digital...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Quackr is recommended for users who prioritize their privacy by not sharing personal phone numbers, frequent digital nomads engaged with international services, and anyone attempting to bypass SMS verification without a personal or permanent number.
No analysis of FFSIM yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing quackr and FFSIM.
quackr's answer
Quackr stands out by offering a seamless bridge between free public access and premium private security. Unlike many competitors that rely solely on low quality VoIP numbers (which are often blocked), Quackr provides Private Non-VoIP Numbers sourced from real SIM cards. This ensures high deliverability rates for strict services like Tinder, Gmail, and Banking apps, giving users a level of reliability that standard free sites cannot match.
FFSIM's answer:
FFSIM stands out with its Repeat Number Renewal feature, allowing users to keep and renew the exact same physical SIM phone number multiple times for ongoing SMS verification. Unlike typical temporary number services, FFSIM offers real Non-VoIP numbers, global coverage across multiple countries, instant SMS delivery, and a pay-only-for-success pricing model. Users also benefit from an easy-to-use dashboard, competitive pricing, and access to over 1,435 supported services.
quackr's answer
Quackr is built on a robust cloud infrastructure designed for speed and security. We utilize advanced telecommunications APIs to bridge real world SIM networks with our digital dashboard, ensuring near instant SMS delivery. Our frontend uses modern frameworks (like React/Next.js) to ensure a fast, responsive experience on both mobile and desktop.
FFSIM's answer:
FFSIM is built as a web-based platform featuring automated SMS verification workflows, real-time message delivery, number management, and an integrated payment system. Its platform includes automated number allocation, SMS monitoring, user account management, and repeat number renewal functionality. These technologies work together to provide users with a convenient and streamlined verification experience.
quackr's answer
Quackr started with a simple mission to stop SMS spam. We realized that requiring a personal phone number for every minor sign-up was a privacy risk. What began as a free tool to protect users from telemarketers has evolved into a comprehensive privacy platform, helping thousands of users globally verify accounts securely without exposing their real identity.
FFSIM's answer:
FFSIM was created to make online SMS verification simpler, more accessible, and affordable. The platform focuses on solving common problems with temporary phone number services, including limited number availability, unreliable SMS delivery, and the inconvenience of repeatedly purchasing new numbers. FFSIM introduced a repeat number renewal solution that allows users to keep using the same physical SIM number for supported services. Its mission is to provide convenient, reliable, and affordable virtual phone number solutions worldwide.
quackr's answer
Our primary audience consists of privacy conscious professionals, digital marketers, and cybersecurity enthusiasts. This includes social media managers managing multiple accounts, developers testing authentication flows, and individuals who want to secure their personal data against data breaches. They are users who value their digital footprint and are willing to invest in secure, private verification methods.
FFSIM's answer:
FFSIM is designed for individuals, developers, software testers, digital professionals, and businesses that need virtual phone numbers for legitimate SMS verification and testing purposes. It is particularly useful for users who need Non-VoIP numbers, international phone number options, repeated verification access, and affordable SMS verification solutions.
quackr's answer
Competitors often provide recycled, spam filled numbers that fail verification checks. Users choose Quackr because we offer guaranteed privacy. With our paid rental option, users get a dedicated number that is theirs alone no shared messages, no interference. We combine the ease of a "one click" free service with the professional reliability of a paid private line, giving users the best of both worlds.
FFSIM's answer:
FFSIM offers several advantages, including real Non-VoIP physical SIM numbers, repeat number renewal, competitive pricing, and automated SMS delivery. Users can renew their existing numbers instead of purchasing new ones whenever renewal is supported. FFSIM also follows a pay-only-for-success policy, meaning users are not charged when a verification code is not received. Its simple dashboard and wide range of supported services make SMS verification convenient.
FFSIM's answer:
FFSIM serves a diverse international user base, including:
FFSIM currently serves over 1,700 users through its online platform.
Share your experience with using quackr and FFSIM. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


There are lots of them: https://quackr.io/ https://receive-smss.com/ https://sms24.me/ https://temp-number.com/ https://onlinesim.io/. - Source: Hacker News / about 1 year ago
I'm also curious because it seems like using a phone with no strings attached today seems almost impossible unless you get an actually old phone, which either works poorly or costs a lot as part of a retro collection or something. Even... Source: about 3 years ago
You can also take this poll over at bettor edge, and whichever team gets the most votes, will get an extra 5k donated to their respective charity (the loser will still get a 1k donation). So if you are so inclined, head over there and... Source: about 3 years ago
Tracking FFSIM since Nov 2026.
When comparing quackr and FFSIM, you can also consider the following products.

SMS-man offers a virtual numbers to receive SMS and create multiple accounts on WhatsApp, Telegram, Instagram, Twitter, Amazon and others. The SMS-man service provides numbers of such countries as China, US, India, Russia, UK, Germany, Ukraine etc.
Compare SMS-man.com to quackr or FFSIM:
The best SMS activation site! Operating since 2013. Payment by card. 60+ countries numbers. Purchase without registration!
Compare Smspva to quackr or FFSIM:

Receive SMS online to virtual numbers — use directly on site or via API to register accounts of any service and application, receive profits and discounts
Compare HeroSMS to quackr or FFSIM:

Totally free online service whereby you can Receive SMS Online, without the need of inputting your own mobile/cell number.
Compare AnonymSMS to quackr or FFSIM:

Instantly rent a phone number to receive SMS verification codes for popular services. Earn 80% commission as a partner.
Compare flo-voice1.com to quackr or FFSIM:

Temporary non-VoIP phone numbers for receiving SMS and OTP verification codes online, with activations lasting up to 20 minutes across 180+ countries and 500+ supported services.
Compare GlowSMS to quackr or FFSIM: