An extra Israeli number, no extra SIM
A second number. Real cellular calls and SMS.
An extra number on the phone you already have. Calls to it ring on your phone's regular line, outgoing calls go out through its dialer, and the other side only sees the new number.
- Rings on your cellular line
- SMS to any phone in Israel
- No internet needed to talk
Free trial: 10 minutes of calls or 7 days, whichever comes first, and up to 10 SMS. No payment details needed.
App animation: an incoming call. The screen says 'Incoming call on Work line', 079-555-0182, from 052-555-0177. Answered, the call connects.
Real calls
Real calls, not app calls
Most second-number apps route your call over the internet. Ours is a normal cellular call.
Rings like any call
With the line set to ring on your SIM, a call to your second number rings on your cellular line with the normal incoming-call screen, even with the app closed and no internet.
Cellular call quality
The call goes over the cellular network, without the dropouts and lag of an internet call.
Goes out through your dialer
Choose 'Via SIM' and the call goes out through your phone's regular dialer via one of our access numbers. The other side sees your second number, not your real one.
Any phone can call and text it
Mobile or landline, in Israel or abroad: anyone with a phone can call and text the number without installing anything.
App animation: the keypad switches between the Work and Personal lines, and the number the other side will see changes from 079-555-0182 to 053-555-0124.
| ShadowNumber | VoIP apps | |
|---|---|---|
| Incoming calls ring on your cellular line | Yes | No |
| Talk without a data plan | Yes | No |
| Outgoing calls through your phone's dialer | Yes | No |
| Real SMS to and from any phone | Yes | Depends on the app |
| Also works over Wi‑Fi | Yes | Yes |
No reception? You can also answer and call over Wi‑Fi. It's an extra option, not the main way.
SMS
Real SMS, from your second number
App animation: an SMS thread on the Work line. Ordinary text messages arrive from 052-555-0177, and the replies go out from the second number.
The number receives ordinary SMS from any phone, in Israel or abroad, and you reply from the app to any Israeli number. The other side gets a normal text from your second number – not an in-app chat.
- Each line has its own message threads
- Its own SMS sound and alert style per line
- Notifications can show just 'New activity', without the sender or the text
How it works
Three steps, on the phone you already have
Download and verify
Install the app and verify your real number with an SMS code. It's only used to recognise your outgoing calls.
Choose a number
Mobile 05X or landline 07X, from the numbers available. We don't ask for an ID.
Talk
Choose where the number rings – on your SIM, in the app or both – and start making and taking calls and texts.
Privacy
Your real number stays private
Home-screen animation: the ShadowNumber icon turns into a neutral icon called Notes.
The people you talk to only see your second number. And if you need more privacy, discreet mode protects the app itself.
- A neutral home-screen icon: Lines, Notes or Shapes
- Lock with fingerprint, Face ID or a PIN, and a Decoy PIN that opens an empty account
- On Android: a secret code in your dialer opens the app
- Panic wipe of everything on the phone, and automatic history deletion
AI assistant
An AI assistant that answers for you
When you're busy, don't answer or can't be reached, the assistant takes the call. Outside working hours, calls follow your hours settings.
- Smart voicemail, Call screening or Receptionist
- A paid add-on, by AI minutes per month
- Powered by Arivox voice agents
Hear a sample call
The app's example call, with voices: the assistant answers on the Work line and asks who is calling and what they need.
Transcript
- AI assistant Hi, you have reached the Work line. Who is calling, please?
- Caller This is Moshe from the delivery company, about order 4471.
- AI assistant Thanks, Moshe. I will let them know. What time suits you for the delivery?
- Caller Tomorrow between 10 and 12.
Animation of the app's example call: the AI assistant answers a caller on the Work line and handles the call, and the call appears in your call list.
In the app
Everything a second number needs
Each line has its own settings, messages and history, in one app.
Rings on SIM, app or both
For each line, choose where it rings: on your cellular line, in the app over the internet, or both at once – whichever you answer first takes the call.
Work and personal apart
Two lines on one account, each with its own colour, messages and settings.
Hours and forwarding
Working hours for each line (with a short Friday), and what happens outside them or when you don't answer: voicemail, the AI assistant or forwarding to an Israeli number.
Alerts and sound
Ring, vibrate or silent for calls in the app, an SMS sound per line, and VIP contacts that always ring.
Voicemail
Voicemail for each number, with transcripts in the app. A paid add-on.
Change number
Need a different number? Replace the number on the line and keep its settings and history. A one-time payment.
Blocking
Block calls with no caller ID, and keep a list of blocked numbers for each line.
Emergency calls
100, 101, 102, 104, 105 and 112 always go to your phone's own dialer.
From the app
The app, as it is
Calls: every call is marked with its line. 
Keypad: you see what the other side will see. 
Lines: each number with its own settings. 
Discreet mode: icon, lock and decoy PIN.
Get the app
A second number, on the phone you already have
The app is coming soon to iPhone and Android. Bought a code at a shop? You can activate it now.