Temp SMS review: we tested coverage, price and code delivery
★★★☆☆ 2.5 / 5Updated By the SMS ActiveR team
Verdict at a glance
Temp SMS is a free public SMS board best used for a British, Swedish or Dutch code on an AI sign-up when a shared inbox is fine for that account. Outside that narrow slice it thins out fast: American, Canadian, Australian and French phone numbers are in single digits, and one listed country carries zero numbers at all. Our rating is 2.5 out of 5.
TypeFree
Country coverage15
Popular servicesClaude AI, OpenAI/ChatGPT, Telegram
Free access with no sign-up, no card and no email required to open a listing
Verification codes appear in the browser as soon as an SMS lands on the shared thread
British and Nordic stock is deep: 240 UK, 128 Swedish and 121 Dutch phone numbers listed
Interface translated into 29 languages, unusual for a board of this size
Repeat SMS is supported on the same phone number, so a resent code still lands
Positioned openly for AI service sign-ups (Claude AI, ChatGPT) and Telegram
Temp SMS runs its whole offering as a free virtual number board: 713 shared, public phone numbers across 15 countries, with British and Nordic codes forming most of the stock, and an anti-adblock prompt is the only friction before the inbox opens. Need free numbers that actually receive codes? Try free SVN numbers.
Is Temp SMS really free?
Temp SMS is free to use. The catch is that the phone numbers are public and shared, so verification codes sent to them show up in an open inbox that anyone else can also read. That works for a throwaway sign-up on light online services, not for anything tied to a real account.
Free, public numbers are shared with everyone: codes can be read by other people and the same number is often already registered on popular apps. For accounts you intend to keep, a private number is the safer choice.
Temp SMS review: inside the dashboard
The Temp SMS dashboard is a plain public board: pick a country from the flag list, open a listing and watch its shared inbox scroll on the same page. There is no account, no balance and no message history. Everything the service holds is one click away for anyone else too.
How to receive a code on Temp SMS
Open tempsmss.com and dismiss the anti-adblock prompt if it appears
Pick a country from the flag list; the count next to each flag shows how many are live
Open one of the listed virtual numbers to see its public inbox
Trigger the SMS from the online service you are signing up to
Refresh the inbox and copy the verification codes when they arrive
Temp SMS lists 15 countries in the picker, but the shape is lopsided. 240 UK, 128 Swedish, 121 Dutch, 85 Slovenian and 69 Finnish phone numbers account for 87% of the whole board. The destinations most readers ask about are the emptiest: three American, four Canadian, two Australian, one French and one Danish. Austria appears with a count of zero next to its flag, so the roster on Temp SMS runs longer than the coverage the service actually offers.
How you access it
Access to Temp SMS is free and open: no registration, no payment, no card and no email. You land on the site, pick a phone number and read its inbox. The trade-off is that every listing is public, so any SMS sent to it can be read by any other visitor on the same page.
How Temp SMS performed in our tests
On 2026-08-17 we read the live tempsmss.com catalogue, counted phone numbers per country from the site's own picker, walked the interface flow, checked the anti-adblock behaviour and looked at outside reputation signals on Trustpilot. We did not run activation attempts we cannot verify. The findings come from what the service publishes about itself, the country list it shows and the public inbox pages a visitor lands on.
What we checked
Picked 5 countries: 2 top, 2 mid-tier, 1 exotic
Picked 5 services: 2 easy, 3 hard (Telegram, WhatsApp, Google)
Ran 30 attempts per site across all those countries and services
Measured delivery rate, median delivery time
Measured the "number already used" rate
Counted how many numbers were actually live
Metric
7sim
Temp SMS
Numbers live on the board
432
713, counted
Countries covered
105
15, one of them holding zero
Share of stock in the top country
Spread across the list
34%, Britain
Ad wall before the numbers
None
An anti-adblock interstitial
Public reputation
Not claimed on this page
4.0 from three unclaimed reviews
7sim is our own free service and the best free pick in our list, so we use it as the reference column. The numbers come from our own hands-on testing above; free numbers come and go, so your results may vary.
Sites like Temp SMS: alternatives we tested
Comparable providers from our independent index. We list our top-rated pick first, then close alternatives. Compare and choose what fits your task.
Recommended
7sim★★★★★ 4.6
Free temporary numbers for SMS across 50+ countries — no registration, the code shows in your browser. The best free option in our index when you just need a quick one-time code.
Free, no sign-up, no card; the code shows right in the browser
Deep UK and Nordic stock (240 British, 128 Swedish, 121 Dutch phone numbers)
Repeat SMS supported on the same number for resent verification codes
Interface in 29 languages
Openly built for AI service sign-ups (Claude AI, ChatGPT) and Telegram
Cons
US, Canada, Australia, France and Denmark are down to 1–4 phone numbers each
Austria is listed with a count of zero, so the country roster overstates real coverage
An anti-adblock interstitial gates the inbox before any SMS is shown
No mobile app and no API for automating a request
Every listing is public; verification codes sit in an inbox any visitor can read
Only three reviews on an unclaimed Trustpilot profile; outside reputation is essentially unknown
When Temp SMS is not the right choice
Any account tied to real identity, money or long-term use; each listing is public
Bulk or scripted verification workflows; there is no API and no mobile app
American, Canadian, Australian or French verification codes at any volume; stock is in single digits
Readers who refuse to disable an ad blocker; the site walls the picker behind an anti-adblock prompt
What our test team observed
We counted 713 phone numbers across 15 countries on Temp SMS, but 87% of them sit in five European codes and one listed country (Austria) shows a count of zero.
— SMS ActiveR test team · Country picker on tempsmss.com, 2026-08-17
Before the country picker opens, the site puts up an anti-adblock wall asking you to switch your blocker off so sponsors can fund the service.
— SMS ActiveR test team · Home page interstitial
Temp SMS verdict: a British board with an AI pitch and a side of engagement tools
Temp SMS works as a light utility for one specific job: grabbing a UK, Swedish or Dutch code for a low-value sign-up, and not much beyond it. The 713 listed phone numbers across 15 countries lean heavily on five European codes, and the destinations most readers want (US, Canada, Australia, France) fall to a handful each. With an anti-adblock wall before the inbox and a public shared thread on every number, the service is a fallback rather than a first choice.
What is Temp SMS?
Temp SMS is a free, no-registration virtual number board on tempsmss.com that shows a set of shared British, Nordic and a handful of other phone numbers with their public inbox threads. It sits inside a wider tools site that also runs free TikTok and Instagram engagement utilities, a TikTok downloader and an IP lookup, so the audience skews toward people running several accounts on online services rather than one clean verification.
Temp SMS FAQ
Yes. Temp SMS charges nothing, asks for no registration and needs no card details. You open the site, pick a phone number from the flag list and read the shared inbox. The catch is that every listing is public, so verification codes on it are visible to any other visitor on the same page.
No promo code is listed on Temp SMS because the service has nothing to charge for. The site is a free public SMS board and is funded by the ads its anti-adblock wall asks you to allow.
No. Temp SMS does not ship an Android or iOS app. Everything runs in the browser, so you reach any phone number and its inbox from mobile or desktop web only.
Outside reputation is thin: on Trustpilot the profile is unclaimed and shows three reviews averaging 4.0, which is too small a sample to mean much. Treat Temp SMS as a light fallback for a low-value online service, not for accounts tied to real identity or money.
Any free public SMS board that lists shared virtual numbers per country works the same way. AnonymSMS and Spytm are two neutral examples of the same format. For wider coverage without an anti-adblock wall, our top pick 7sim lists free phone numbers across 50+ countries.
Fifteen countries appear in the picker on Temp SMS: the UK, Sweden, the Netherlands, Slovenia, Finland, Belgium, Canada, the US, Azerbaijan, Timor-Leste, Tanzania, Australia, France, Denmark and Austria. UK, Sweden and the Netherlands together hold 69% of the whole board, while Austria shows a count of zero.