Smart Second Phone Line for Bu

185 reviews
Content rating
Everyone
50K+
Downloads
Content rating
Everyone
Users Interact
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About this app

Ninja Number is the Second Phone Number app that lets you choose how you want to communicate. Separate business and personal calls with a designated 2nd phone number. Our industry-leading technology is ‘Always On’ (and trusted for over 20 years by the biggest businesses in the world,) ensuring you have coverage 24/7/365! With Cloud Power and Artificial Intelligence, our app turns your phone into a Virtual Assistant.

Separate business and personal calls. Always know who’s calling when you use Ninja Number as your business phone number through Virtual PBX. When you return calls with the app, your Ninja Number will display, keeping your personal number private.

AI Auto Reply. Let Ninja Number handle customer questions for you! Customize questions and answers using AI-Powered Auto Reply, sit back and let your phone do the rest. Our best business app technology ensures your incoming texts and voicemails will be scanned for the questions you programmed and will text back with the answers you create.

We’re excited to offer a 7-Day Free Trial for any user who signs up through our website - NinjaNumber.com!

Cloud-Powered Visual Voicemail. Don’t pay extra for visual voicemail. With Ninja Number’s smart line technology, there’s no need to always answer the phone. Simply read your voicemails and text back – all within the same thread.

Virtual Assistant Business App. Running a business is hard, so put your phone to work. Ninja Number organizes your SMS texts and voicemails, tags and filters your contacts and gives you detailed call tracking and analytics, so you don’t have to do it all.

Loop in team members. Get extra call coverage by looping in four team members. Easily link your Ninja Number to other devices so that when a call comes in, all phones ring. You’ll only ever pay for one subscription. We can also port or transfer numbers for you!

Live Ninjas On-Demand. Want call coverage even when you’re busy or in a meeting, and don’t want your VIP Calls going to Voicemail? With Live Ninjas On-Demand, a professional US-based live operator will answer your calls when you want them to. They’re trained to answer the phones like you would! Pay by the call and never miss another lead again.

Leads without calls. Ninja Number’s virtual phone system empowers you to communicate the way you want. Prefer business text messages? With AI Auto Reply and Cloud-Powered Visual Voicemail, you can text securely and so can your linked team members all in the same thread.

Ninja Number is a smart, protected Second Phone Line app with easy, simple setup. Choose a toll-free or local number to advertise to customers and clients. Want a toll-free vanity number? Our Support Ninjas will work with you to find the number that fits your business line. Your phone is smart, so put it to work.

Currently available in the US only. Requires a Ninja Number Flex subscription to use. The Flex plan automatically renews each month indefinitely for $9.99 until you cancel. You will be charged $9.99 a month until canceled in Google Play subscription settings at least 24 hours before your current period ends. All charges are applied to your Google Play account.


Terms of use: https://ninjanumber.com/terms/

Privacy policy: https://ninjanumber.com/privacy/
Smart 2nd business phone number 📞 Smartline with sms & call forwarding!
Updated on
Jan 22, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Financial info and 6 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

185 reviews
M Last
January 17, 2021
I love not having to pay for an extra line, and still get some cool features, such as AI replies! Not bad for 10 bucks a month. It still has it's quirks, but their customer support is quick and responsive! Wish they had some troubleshooting tips in the app rather than having to go find it on the desktop site, but still worth it since we're just starting out.
10 people found this review helpful
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A Google user
August 10, 2019
We started using NInjaNumber for our agritourism business a few months ago and now we can't imagine not having it. My favorite feature is being able to sit down in the evening and quickly text back everyone who left a voicemail by reading the transcripts and responding. It helps too that I know when other partners have responded already so we're not tripping all over one another.
14 people found this review helpful
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Ninja Number
August 12, 2019
Thank you for the feedback! Glad you are enjoying the "Unanswered" calls/texts feature.
00 7
August 24, 2026
⭐ 1 STAR — TERRIBLE SERVICE-SCAM!! This phone service has been an absolutely horrible experience. The customer service is unacceptable, and the app/service feels misleading and deliberately designed to frustrate customers instead of resolving their problems. Based on my experience, I would NOT recommend this company to anyone. Customers deserve transparency, reliable service, and actual support when something goes wrong—not excuses, runarounds, and an app that makes getting help even harder.
1 person found this review helpful
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What’s new

Minor UI Improvements