Quackr vs SMS4Sats
It is a trade-off. Quackr has the higher Safety grade (5.2 against 4.6), while SMS4Sats has the higher Privacy grade (8.5 against 5.1).
Quackr
Free shared temporary numbers and paid private non-VoIP number rentals
Privacy
5.1/ 10
Caution
Safety
5.2/ 10
Caution
No ID mentioned KYC 1 Docs reviewed Full review →
SMS4Sats
Receive SMS verification codes by paying a Lightning invoice, no account
Privacy
8.5/ 10
Excellent
Safety
4.6/ 10
Caution
ID never required KYC 0 Docs reviewed Full review →
Side by side
| Quackr | SMS4Sats | |
|---|---|---|
| Category | Phone Numbers & SMS | Phone Numbers & SMS |
| KYC policy | No ID mentioned | ID never required |
| Custody | N/A | N/A |
| Sign-up | Email required | No account needed |
| Open source | No | No |
| Tor onion address | No | Yes |
| Coins | Not published | BTC |
| Pay with | Card, PayPal, Crypto | Lightning |
| Fees | Public numbers free; private number pricing not confirmed during this review | Not published |
| Founded | 2020 | Not published |
| Jurisdiction | Hong Kong | Not published |
| Incidents on record | 0 | 0 |
| Published tests (180 days) | 0 | 0 |
Only Quackr
Requires emailAML screeningLegal entity disclosed
Both
Nothing distinct
Only SMS4Sats
No registrationNo email neededNo phone neededTor onion serviceAccepts LightningAnonymous operator
Where they sit among phone numbers & sms
Questions
Is Quackr or SMS4Sats safer?
Quackr has the higher Safety grade: Quackr 5.2, SMS4Sats 4.6, out of 10.
Does Quackr or SMS4Sats require KYC?
Quackr is KYC level 1 (no ID mentioned). SMS4Sats is KYC level 0 (ID never required).
Which has more incidents on record?
Quackr has 0 and SMS4Sats has 0 documented incidents in the registry.