Simbuster: AI 2nd Number

Tierra Digital Limited

In-app purchases

About this app

Simbuster gives you a second phone number, AI receptionist, IVR call routing, VoIP calls, travel eSIMs and mobile top-ups in one simple app.
Get a virtual phone number for work, travel, online selling, business calls, private calls or keeping your personal number separate. Make and receive supported calls, manage communication services, route callers, create professional greetings and stay connected without carrying another phone or physical SIM card.
Simbuster is more than a second number app. It combines virtual numbers, AI call handling, mobile Receptionist tools, travel data eSIMs, top-ups, calling credits and smart phone features for people who need one powerful communication app.

Why use Simbuster?

- Get a second phone number for work, travel or personal use
- Keep your real mobile number private
- Use supported local, mobile, national or toll-free numbers where available
- Make VoIP calls and manage call credit in one place
- Build IVR Receptionist flows directly from your phone
- Route callers to the right person, department or message
- Use AI call answering tools when you are busy
- Create professional greetings with AI voice avatars
- Choose character-style voice greetings for a more memorable caller experience
- Use voicemail, call routing and call handling tools where supported
- Activate travel eSIM data plans in supported countries
- Send mobile top-ups where available
- Manage numbers, credits, calls and services from one app

Second phone number
Use Simbuster as your second line for business, travel, online marketplaces, customer calls, side projects, dating, sign-ups or separating personal and professional communication.
A second number helps you stay reachable without sharing your main mobile number everywhere.

AI Receptionist and IVR
Turn your phone number into a smarter call system.
Build simple call flows from your mobile, add greetings, route callers, send calls to voicemail, create menus and manage incoming calls like a professional business phone system.
Perfect for founders, freelancers, small businesses, online sellers, property managers, coaches, consultants and remote teams.

AI voice avatars
Create a better caller experience with voice avatars and character-style greetings. Use them for welcome messages, receptionist prompts, business greetings, fun call flows or branded audio.
No studio. No voice actor. No complicated setup.

Travel eSIM data
Stay connected when travelling with supported eSIM data plans. Activate mobile data without swapping your physical SIM card.
Useful for holidays, business travel, digital nomads, students, expats and anyone who needs fast mobile data abroad.

Mobile top-ups
Send prepaid mobile top-ups to supported networks and countries. Help friends, family, staff or yourself stay connected when it matters.

Built for real use

Simbuster is ideal for:

- Business phone numbers
- Private second numbers
- International calling
- Travel communication
- eSIM mobile data
- Online selling
- Customer enquiries
- AI call handling
- Mobile receptionist setup
- Freelancers and small teams
- Expats and digital nomads
- Friends and family abroad

One app. One number strategy. Smarter communication.

Availability of numbers, SMS, OTP, calls, eSIMs, top-ups, AI tools, IVR, voicemail and other features varies by country, number type, plan and provider support.

What’s new

We continue improving the application, introducing new features, and enhancing the user experience.