SMSPING · GUIDES
OnlineSIM alternative: paid numbers, not a free inbox
OnlineSIM (onlinesim.io) is an SMS receiving service that, on its own pages, offers both free public numbers and paid temporary or rental numbers. If you searched for an "onlinesim alternative free," this page states both sides plainly: OnlineSIM publishes a free public list; SMSPing does not. SMSPing numbers are paid when you order, with a $10 minimum top-up. See also Free public SMS numbers vs paid orders.
Facts about OnlineSIM below come only from its public pages, checked on 12 November 2026. We do not invent payment methods or prices we did not find stated there.
Create an SMSPing account or open the price list (no account needed to browse prices).
What OnlineSIM says about itself
The Onlinesim homepage (checked 12 November 2026) describes virtual numbers for receiving SMS, a stats block of 1000+ services, 110+ countries, 13 years in the market and 24/7 support, and a tariffs area that also says 108 countries. Exact prices, it says, depend on the country you select. It advertises a "15-minute Number" that receives unlimited SMS from one service for 15 minutes, and a rental option that can be extended and can receive SMS for any service.
The same homepage has a "Try our free virtual numbers" section. In its on-page FAQ it says those temporary free numbers are public, may already be used on popular services, and (in that homepage text) are updated every day. It also says a short-rent number lasts from 10 minutes to 1 hour depending on the country. If no SMS arrives, it says you can close the number and the money is not debited, or is returned to the balance, so you can order another.
The OnlineSIM FAQ (article dated 30 May 2023, re-read 12 November 2026) says: "We only debit money when you receive SMS." It describes a frozen balance: the amount is held when you order, debited if an SMS arrives, and returned to the account balance if it does not. It confirms free numbers exist at https://onlinesim.io/#free, says those free numbers are public, and says they are updated every Monday and Thursday. That update schedule is not the same as the homepage's "every day" sentence; both are OnlineSIM's published wording, and this page does not choose between them.
OnlineSIM also links API documentation and a refund policy from the homepage. This page does not summarise those documents beyond what is quoted above, because they were not opened in full on 12 November 2026.
OnlineSIM vs SMSPing
Each OnlineSIM cell uses only what that site publishes (checked 12 November 2026). A blank cell means we did not find it stated on the pages we opened.
| OnlineSIM | SMSPing | |
|---|---|---|
| Free numbers | Yes, on the homepage; the FAQ says they are public | No. Numbers are paid when you order; minimum top-up $10 |
| Paid numbers | One-service short rent (homepage: 15 minutes; also "10 minutes to 1 hour") and a longer rental option | Paid per order for the selected service |
| Coverage, as published | Homepage stats: 110+ countries; tariffs block: 108 countries | 140+ countries; no Russian, Ukrainian or Chinese numbers |
| If no SMS arrives on a paid number | FAQ: money is not debited until an SMS arrives; frozen amount returns to the balance if none arrives | The price is deducted when you order. If an order is canceled or times out with no SMS, the charge is returned to your SMSPing balance, once per order; the balance is not withdrawable. |
| Payment methods | (Not listed on the homepage text we opened) | USDT (TRC20/ERC20/BEP20) is the main option; TRX, ETH and BNB are also accepted |
| API | Homepage links OnlineSIM API documentation | Yes: https://smsping.net/stubs/handler_api.php |
| Withdrawing a balance | (Not summarised here; a refund policy is linked from the homepage) | Not possible; the SMSPing balance is not withdrawable |
When OnlineSIM may fit, and when to use SMSPing
Stay with OnlineSIM if you want to try their published free public numbers, or if their "debit only when an SMS arrives" rule (as stated in their FAQ) matters to you.
Try SMSPing if you want a USDT top-up from $10, a public price list, or an API at smsping.net/stubs/handler_api.php. SMSPing is not free, does not publish a free public inbox, and the SMSPing balance is not withdrawable. Numbers may have been used before. Codes aren't guaranteed.
Start small either way. On SMSPing, top up the minimum and test one number for your app and country.
Sources (checked 12 November 2026)
FAQ
Does OnlineSIM offer free numbers?
Yes. OnlineSIM's FAQ (checked 12 November 2026) says it has free numbers on the homepage. The same FAQ says those free numbers are public and may already have been used. SMSPing does not offer free public numbers; each number is paid when you order, and the minimum top-up is $10.
When does OnlineSIM add new free numbers?
OnlineSIM's FAQ says the free numbers on the homepage are updated every Monday and Thursday. The homepage, checked the same day, also says free numbers are updated every day. Both statements are OnlineSIM's. We have not reconciled them.
Does OnlineSIM charge if no SMS arrives?
OnlineSIM's FAQ says: "We only debit money when you receive SMS." It also describes a frozen balance that goes back to the account if no SMS arrives. That is OnlineSIM's published rule, not SMSPing's.
Is SMSPing free?
No. SMSPing numbers are paid when you order. Minimum top-up is $10. If an order is canceled or times out with no SMS, the charge is returned to your SMSPing balance, once per order; the balance is not withdrawable.
How do I pay on SMSPing?
Top up your account with USDT (TRC20/ERC20/BEP20, recommended); TRX, ETH and BNB are also accepted. Minimum top-up $10.