The best second phone number app
Get a second phone number in 40+ countries — mobile, landline or toll-free — and receive SMS and calls right on the device you already own. No second SIM, no extra handset, no contract.
Your number
Pick your number
A real phone number you can use on any device.
No SIM cards, no extra phones. A NumDaddy number looks and works like a standard mobile number — similar to what you'd get from AT&T, T-Mobile, or Verizon — so it just works for messages, verification codes, and everyday sign-ups.
Your number
Pick your number
How it works
How to get a second phone number in under a minute
No hardware, no porting paperwork, no waiting on a carrier.
Pick a number
Search by country and type — mobile, landline, or toll‑free — and see the exact monthly price up front.
Pay from your wallet
Top up with a card via Stripe, then buy numbers and cover renewals straight from your balance.
Receive SMS & calls
Messages and calls land in your NumDaddy inbox in real time, ready whenever you check in.
Features
Everything a second phone number should do
Wallet billing, no surprises
Every rental and usage charge is logged in a transparent ledger — top up as little or as much as you need.
One inbox, every number
Every SMS and call across all your numbers lands in the same clean, searchable inbox.
Cancel anytime
Numbers renew monthly from your wallet. Cancel whenever you like — no lock-in contracts.
Mobile, landline & toll-free
Pick the number type that fits — a local mobile number, a landline, or a toll-free line for business.
Instant activation
Numbers go live in under 10 seconds after purchase — no waiting on a carrier or porting paperwork.
Secure payments
Wallet top-ups are processed by Stripe — we never store your card details on our servers.
Coverage
Second phone numbers in 40+ countries
FAQ
Second phone number FAQ
Everything to know before you get your first number.
NumDaddy is a second phone number app. You get a second number — mobile, landline, or toll-free — in 40+ countries, and every SMS and call sent to it lands in your NumDaddy inbox. No SIM card and no extra phone required.
Numbers activate in under 10 seconds after purchase. You can start receiving SMS and calls immediately from your existing device.
No. Your NumDaddy number works entirely through your online inbox on the device you already have — no SIM swap, no roaming, no extra hardware.
Yes. Many customers use NumDaddy numbers for customer support lines, verification codes, or a dedicated work line kept separate from a personal phone.
You top up a wallet using a card via Stripe. Number purchases and monthly renewals are charged straight from your wallet balance, with every charge logged in a transparent ledger.
Yes. Numbers renew monthly from your wallet and there is no lock-in contract — cancel a number whenever you no longer need it.
Get your second phone number today
Free account, no commitment. Top up your wallet only when you're ready to buy.