Screenshots
Description
Been using SLYNUMBER for a couple months now. It’s basically a second phone number app that gives you more privacy and features than your regular number. Pretty solid if you’re into that kinda thing.
Here’s what you do: you can use SLYNUMBER for calling, texting, and even international calls. There’s also spam blocking, do-not-disturb mode, and call forwarding – those are pretty cool. And you can set up different voicemail greetings, which I’ve found handy.
Look, if you’re looking for a reliable second number, you’ll probably like SLYNUMBER. It’s not perfect – the interface can be a bit clunky at times – but overall it does the job. Worth checking out if you want more privacy and features for your mobile number.
Editor Opinion
So here's my take on SLYNUMBER. I've tested a bunch of second number apps and this one's pretty good overall. The features are solid and it works reliably, which is the most important thing. And the interface could use some polishing, but it's not a dealbreaker. Compared to some other options out there, SLYNUMBER seems to have more functionality without being overly complicated. Not gonna lie, I do get annoyed by the ads sometimes, but the free version is still worth it if you don't want to pay. Overall, I'd say it's a pretty good choice if you're in the market for a second phone number.
Pros & Cons
Pros
- Tons of useful features like spam blocking, call forwarding, and international calling
- Works reliably and doesn't have issues with compatibility like some other apps
- Free version has most of the core functionality if you don't want to pay
- Easy to set up and start using right away
Cons
- The interface can be a bit clunky and not the most intuitive
- Ads can get annoying if you don't upgrade to the paid version
- Might be overkill if you just need a basic second number
Specifications
| Updated | 13.08.2025 |
| Category | Communication |
| Age Rating | Everyone |
| Developer | MobileSphere |
| Android | Android 9++ |
| Package Name |
com.dev.slynumber |
Ratings
User Reviews
App does not work. I was unable to make outbound calls, even after paying an extra $10 for extra outbound calls/texts. I emailed Customer Service twice and didn't receive a...
Seems like a cash grab! I had 8 dollars and change balance but software went blank when trying to make a call. I contacted customer support. Next thing I know...
This is a good app but needs lots of upgrade. when a calls comes through , it would not pop up from background. Call logs is not always updated. You...
Rate this app
Help others by rating key aspects of this app
App Permissions
This app requires 4 permissions to function properly:
Frequently Asked Questions
Similar Apps
Messages – SMS Text Message
Gmail
Hullomail Voicemail
Should I Answer?
Call.com: 2nd Phone Number App
Email: All Mail Access
InnoCaption Live Call Captions
InmateSales
2nd Line – Second Phone Number
imo video calls and chat HD
Boost Visual Voicemail
