7 Quackr Alternatives: Free and Private Temp Numbers (2026)

Quackr is one of the best-known free receive-SMS sites. Open a country, pick a number, type it into an app, and watch the code appear on a public page. No account, no payment. It also rents private numbers by subscription.

So why do so many people search for a Quackr alternative? Usually because a code never arrived, an app said the number was “already in use”, or they realised that everyone else on the page could read their code too. This guide explains why that happens and compares seven alternatives — free and private — so you can pick the right tool for the job.

Quackr in short: what it does well

Credit first. Quackr gets several things right:

• Free numbers with no signup. Its free list covers about 30 countries, including the US and the UK, and you do not need an account to read a message.
• It is honest about privacy. Its own page says the messages “are displayed on public pages, therefore are not private and can be seen by anyone.” Not every free site says this so plainly.
• Old messages do not pile up. Quackr says messages are deleted every 24 hours and free numbers are rotated at least every 30 days.
• A paid side. Private numbers rent from one week upward, app numbers (one number for one app, such as WhatsApp or Telegram) rent from one month to a year, and there is an SMS API with webhooks. It takes cards, PayPal, crypto, Apple Pay and Google Pay.

Why people look for a Quackr alternative

• The free inbox is public. That is the whole model. If you verify an account with a public number, anyone can read the next code that number receives — including a password reset.
• Free numbers are shared. Many people use the same number for the same apps, so apps start refusing it. More on that below.
• The paid side is rentals only. We found no pay-per-code option on Quackr’s pricing page. If you need exactly one code, a week or a month of rental can be more than the job needs. Its pricing page also says subscriptions “renew until you cancel”, so set a reminder.
• The refund rules are strict. Quackr asks you to report a dead number within the first 48 hours, tries two replacements before a full refund, and gives no refund or exchange once a number has received an OTP. That is a fair rule for a rental — just know it before you pay.

Why free temp numbers stop working

This is not a Quackr problem. It happens to every public-inbox site, and it always happens in the same three stages.

1. Listed. A new number goes on the page. Few people have used it, so most apps send the code without fuss.
2. Shared. Soon, many people have used the same number for the same apps. Apps start to answer with “this number is already in use” or “this phone number cannot be used for verification”.
3. Refused. Big apps flag the number, or the whole range it belongs to. The code is never sent, however often you press “resend”.

That is why “Quackr not receiving SMS” is such a common search. Often the number is fine — the app has simply stopped sending to it. A private number skips the queue: it is not on a public list, so nobody else is signing up with it. If an app refuses every number you try, it may be blocking internet-based ranges; see VoIP vs. non-VoIP numbers.

7 Quackr alternatives, free and private

1. SMSZ free numbers — the same idea, for testing

If you want what Quackr’s free list does, SMSZ has a free numbers page too: public numbers with an open inbox, plus pages for WhatsApp and Telegram. The rules are the same as on every public inbox. Anyone can read the messages, so use it to check whether an app sends SMS to virtual numbers at all — never for an account you want to keep.

Best for: a free test before you spend anything.

2. SMSZ one-time numbers — one private code, no subscription

This is the option Quackr does not sell. Pick a service and a country, see the price, and get a private number that only you can see. The code shows up in your dashboard. If no SMS arrives in time, the order cancels and the money goes back to your balance by itself. Numbers come from 100+ countries, and signup is just an email address.

Best for: one sign-up, one code, nothing to cancel later.

3. SMSZ rental numbers — the same number for repeat codes

A rental keeps one private number yours for anything from one day to twelve months and shows every SMS it receives. Use it when an account will ask for a code again: a new-device login, a marketplace listing, a short project. The one-day option is handy when you only need a number to survive the first few logins.

Best for: accounts that will ask twice.

4. 1001SMS — a second account for stock gaps

1001SMS works the same way: temporary numbers for a single code, plus rentals in popular countries. With a small balance on two services, when one has no numbers in the country you need, the other often does.

Best for: a backup when your first choice is out of stock.

5. Other free receive-SMS sites

Dozens of sites list free public numbers. They follow the same model as Quackr — public inbox, shared numbers, ads to pay the bills — and go through the same three stages. Their one real advantage is a different set of numbers: when everything on one site is “already in use”, a newer number on another site may still work for a test.

Best for: finding a less-used free number. The privacy warning still applies.

6. Second-number apps

TextNow, Google Voice and similar apps give you a number to call and text people from. They are made for conversations, not for codes, and many apps reject their ranges for verification. Our TextNow alternatives and Google Voice alternatives guides compare them.

Best for: talking to people, not verifying accounts.

7. A prepaid SIM or eSIM

The slow, boring, reliable option. A carrier number is accepted almost everywhere and stays yours for years. You pay a monthly plan and, in many countries, show ID. For your bank, your main email and anything you would hate to lose, this is the right answer — see virtual number vs. second SIM.

Best for: accounts you plan to keep for years.

Quick comparison

How to choose in 30 seconds

1. Only testing whether an app sends SMS? Use a free public number. You have nothing to lose.
2. Creating an account you will log in to again? Skip free numbers. Use a private one-time number at the very least.
3. Expect more codes later? Rent a number for as long as you will need it.
4. Is it your bank, your email, or anything with money? Use your own SIM.

Questions people ask

Is Quackr legit?

Yes, it is a real service. Its terms name the operator as Quackr Limited, a company registered in Hong Kong. The free numbers do what they promise: they receive SMS on a public page. Just remember what “public” means, and read the refund policy before you rent a private number.

Is Quackr free?

The public numbers are free and supported by ads. Private numbers and app numbers cost money and are sold as rentals.

Why is my Quackr number not receiving SMS?

Usually because the app has stopped sending to that number, not because Quackr is broken. Shared numbers get flagged fast. Try a number that was added more recently, try another country, or use a private number. If a private number also gets nothing, the app may be blocking VoIP ranges — here is how to check.

Is there a free non-VoIP alternative to Quackr?

Be careful with “free non-VoIP” offers. A real mobile number costs its provider money every month, so a free one is either public, shared, or not what it says. If an app needs a non-VoIP number, a private paid number is the honest route.

Can I use a free temp number for WhatsApp or Telegram?

You can try, but not for an account you want to keep. Anyone else reading that inbox can request a new code and take the account over. For a lasting account, follow our WhatsApp or Telegram guide with a private number.

Are free temp numbers safe?

Safe for your real number, which stays hidden. Not safe for the account you create, because the inbox is open to everyone. Use them for tests, never for anything you would miss.

Ready for a number only you can see? Browse 100+ countries, pick a service, or read how SMSZ works. Comparing paid providers? See our SMS-Man and OnlineSim alternatives.

Sources

Quackr’s own pages, checked on October 27, 2026:

• Free temporary numbers — the public-inbox notice, 24-hour message deletion and 30-day rotation.
• Pricing — private and app numbers, rental lengths and renewals.
• Refund policy — the 48-hour window, two replacements and the used-number rule.
• Terms of service — the operating company and automatic renewal.