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Android Apps > Communication > SLYNUMBER
SLYNUMBER icon

SLYNUMBER

13.0
MobileSphere
4.25
1,524 reviews
500,000+
Downloads
Free

Second phone number to make and receive calls and texts.

SLYNUMBER Screenshot 1 of 8
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Screenshots by MobileSphere, from the Google Play listing
View on Google Play

AppBrain's verdict

Well rated
Rating on Google Play
4.25
1,524 ratings
Installs
740 thousand
Last updated
November 4, 2026
Ads
No ads
Size
71.8 MB

SLYNUMBER has 740 thousand installs. Users rate it well: 4.2 stars from 1,524 ratings. Its best ranking is #94 in Top Grossing, Communication in United States.

Official page on Google Play

Pros & Cons

  • Real mobile numbers, not VoIP, increasing acceptance with services
  • Rich feature set: spam blocking, DND, forwarding, and eSIM
  • Strong international calling capabilities
  • Transparent, subscription-based pricing with clear outbound credits
  • No free trial period; pricing requires commitment
  • Subscription + credits model may be complex for casual users
  • Some users seeking simple texting may prefer standalone texting apps

User feedback

Ratings and reviews on Google Play

Comments on SLYNUMBER for Android

★★★★☆ ༆ Ꙭ · May 30, 2026
You need to pay subscription 15 dollars per 3 months
★★★★★ Don Joe · Mar 17, 2026
This app makes claims that they do not give out VoIP numbers... which was very interesting to me upon reading... and had me curious about a few things... I rarely find an app that lets you pick a number for free... that doesn't require you to pay right away....that is a very top tier kinda service... if the call quality is good and if messages push through the notification system properly written without delay. I'm pleased to say this app has earned my 5-star rating, until further notice! Very good
★☆☆☆☆ Mahmoud Nady · Aug 24, 2026
Avoid this service. I paid $50 for an annual plan because SLUMBER advertises that their numbers are real, non-VoIP U.S. numbers that work with WhatsApp. The number they assigned me was immediately blocked by WhatsApp for security reasons. I contacted support, and they actually replied promising to give me a working replacement number. However, they never followed through. After that empty promise, they completely stopped responding to my emails and ghosted me. NOT Recommended at all!!
★☆☆☆☆ Yury Parfentsov · Apr 29, 2026
Absolutely terrible service — stay away. I used Sly Number for WhatsApp and OTP codes from my banks, with auto-renewal enabled on my account. When the renewal date came, their system failed to charge my card. Instead of notifying me, retrying the payment, or giving me any kind of grace period to update my billing details, they silently cancelled my plan and immediately resold my number to someone else. Let that sink in: a number tied to my WhatsApp account and my banking OTPs — now in a strange

Google Play Rating history and histogram

1.1K
150
29
14
220

Store listing

By MobileSphere, from Google Play
Description by MobileSphere Written by the developer, not by AppBrain. Click to read.
SLYNUMBER can do everything your primary mobile number can but with added privacy and more features.

SLYNUMBER has a new look! We have updated everything from our logo, website and interface. What’s more exciting: new features have been added to improve communication, making it easy and efficient, such as international calling, full spam blocking, do-not-disturb mode, call forwarding, and more!

NOT TO BRAG, WE ARE THE BEST

SLYNUMBER is not just another second number app. SLYNUMBER is the ONLY provider on the market to offer real mobile numbers. We don't provide VoIP, fake phone numbers, or second lines that only work for a week. This distinction is crucial because many apps and online services do not accept VoIP numbers. SLYNUMBER works everywhere!

To put is simply - unless you're willing to sign up with a major carrier like T-Mobile, Verizon, or AT&T and commit to an expensive plan with a SIM card and monthly bills, we are your ONLY alternative for obtaining an actual mobile number.

Moreover, we prioritize your privacy and anonymity, allowing you to share your number with strangers, clients, acquaintances, blind dates, or anyone else without the fear of being tracked or spied on.

HOW SLYNUMBER WORKS

Setting up SLYNUMBER is fast and easy! Simply, download the app onto your phone, pick your number and start calling and texting.

SLYNUMBER can do everything your primary mobile number can but with added privacy and some really cool features. We offer the most reliable and fully featured virtual phone number app available, with calling & texting features that include free toll-free calls, blocking, muting, and do-not-disturb mode, caller name & ID settings, SlyAI (running on ChatGPT-4), call forwarding, and number porting. And now we also offer an eSIM feature that will allow you to activate cellular data anywhere in the world. We are you one-stop shop for all things mobile.

Use it for:
-Privacy & keeping your information safe
-Separating personal and transactional numbers
-Your business needs
-Job applications
-Traveling abroad
-Communicating freely with spam blocking & muting
-Setting boundaries with do-not-disturb settings
-Online or in-person dating

Your private phone number can be risky if it falls into the wrong hands. Our main protective measure is ensuring that SLYNUMBER does not gather any personal information apart from what is required for processing payments, which remains inaccessible. Using SLYNUMBER, you can establish barriers through features like spam call blocking and do-not-disturb settings to guarantee that you always have control over your communications.

PLANS & PRICING

SLYNUMBER is a subscription-based app, offering you two simple ways to enjoy a second mobile number & complete privacy that comes with it.

3-MONTH BASE PLAN: $4.99/mo (billed every 3 months at $14.99). The plan includes unlimited inbound calling and texting and 100 monthly outbound credits for calling and texting

ANNUAL PLAN: $4.18/mo (billed annually at $49.99) The plan includes unlimited inbound calling and texting and 100 monthly outbound credits for calling and texting

ADDITIONAL OUTBOUND CREDITS: 1000 credits for $10 (1 credit equals to 1-min call or 1 text message)

SUBSCRIPTION DETAILS

All subscriptions include unlimited inbound calls and texts, and 100 outbound credits (1 credit equals to 1-min call or 1 text message). If credits are used additional outbound credits may be purchased. Subscriptions automatically renew unless canceled. Subscriptions can be managed by the user through the app. For any further assistance, contact support@slynumber.com

International calling rates vary based on the country you're calling.

THE FINE PRINT

Privacy Policy: https://slynumber.com/privacy-policy.html
Terms of Use: https://slynumber.com/terms.html

IMPORTANT: Please review our pricing before purchasing - SLYNUMBER has no free trial period. Outbound phone calls and text messages require an additional purchase of credits.

Recent changes:
new features for messages
ui updates
bug fixes

Safety and technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
31
App size
71.8 MB
Content rating
Everyone

Technologies used by SLYNUMBER

40 permissions · 31 libraries
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Version
13.0
Launched
September 2022
  • Nov 4, 2026UpdateVersion 13.0
  • Sep 22, 2026UpdateVersion 12.6
  • Aug 28, 2026UpdateVersion 12.0
  • Aug 23, 2026UpdateVersion 11.7
  • Jul 23, 2026UpdateVersion 11.6
Show all changes Show fewer

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Installs

Tracked by AppBrain
Last 30 days
78 thousand
Per day
2.6 thousand
30-day average
Play install range
500+ thousand
Launched
September 2022

Installs over time

SLYNUMBER has been installed 740 thousand times. Over the past 30 days, it averaged 2.6 thousand installs per day.

Rankings

Google Play top charts
Highest rank
#94
Chart
Top Grossing
Communication
Country
United States

Google Play Rankings for SLYNUMBER

Top rankings

Rank Country Category List
94 United States Communication Top Grossing
122 Iran Communication Top Grossing
167 Finland Communication Top Grossing
167 Portugal Communication Top Grossing
168 Denmark Communication Top Grossing
168 Norway Communication Top Grossing
169 Austria Communication Top Grossing
169 Netherlands Communication Top Grossing
169 Slovakia Communication Top Grossing
170 Poland Communication Top Grossing
Show all market rankings

Ranking history in United States

About the app and developer

About SLYNUMBER

SLYNUMBER is a communication app developed by MobileSphere.

Install Statistics

SLYNUMBER has been installed 740 thousand times. In the last 30 days, the app was installed 78 thousand times. It is ranked in the top 100 communication apps.

User Ratings

SLYNUMBER is rated 4.25 out of 5 stars. The rating is based on 1.5 thousand ratings.

App Information

SLYNUMBER is freely available from Google Play. The app size is 71.77 MB. The latest version available is 13.0. The last update was on November 4, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play since September 2022.

SLYNUMBER is made and published by MobileSphere. AppBrain is an independent app data site and isn't affiliated with MobileSphere. The app name, icon, screenshots and description belong to MobileSphere and are shown as published on Google Play.

App Performance Report

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Developer information for MobileSphere

MobileSphere

support@slynumber.com

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Frequently asked questions about SLYNUMBER

Is SLYNUMBER free?

Yes. SLYNUMBER is free on Google Play.

Is SLYNUMBER still available?

Yes. SLYNUMBER is on Google Play, and the last update we saw was on November 4, 2026.

Does SLYNUMBER contain ads?

No. Google Play does not list SLYNUMBER as containing ads.

How large is SLYNUMBER?

SLYNUMBER is 71.77 MB.

Is SLYNUMBER suitable for children?

Google Play rates the content of SLYNUMBER as suitable for everyone.

How many times has SLYNUMBER been installed?

Google Play lists 500,000+ installs for SLYNUMBER.

How do people rate SLYNUMBER?

SLYNUMBER scores 4.25 out of 5 stars, from 1,524 ratings on Google Play.

Who made SLYNUMBER?

SLYNUMBER was developed by MobileSphere. It is listed in the communication category on Google Play.

What are the best alternatives to SLYNUMBER?

People looking at SLYNUMBER also look at these communication apps: Reverse Phone Lookup — rLookup, Second Phone Number - Call Now, Text Call: Second Phone Number, Phone Id - Fake Caller Buster, 2nd Phone Number Calling, Text.

Share SLYNUMBER

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