Comparison

Vonage Home Extensions vs SLYFONE

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Vonage Home Extensions

This app extends your home VoIP phone service to your smartphone. Make and receive calls using your home number, save on international calls, and avoid roaming charges. It integrates with your contacts for easy dialing and offers features like Do Not Disturb and call blocking.

Highlights
  • Make/receive calls on iPhone using home number
  • Calls ring on multiple smartphones simultaneously
  • VoIP for business and home phone service
  • Save on international calls
  • Use Wi-Fi calling to save cell minutes
  • Caller ID shows Vonage number
  • Block unwanted calls
Features
Read full description

Your new Vonage VoIP phone service is here. And you can take it anywhere. As a Vonage Customer the Extensions app brings your home phone to your iPhone. Download now and you can make and receive home phone calls on up to two phones over Wi-Fi or 3G/4G. (Push Notifications required) Features • Make calls from your Vonage home number on your iPhone (New) • Calls to your home phone ring on up to two smartphones at the same time -answer whichever one is more convenient (New) • VoIP allows for business and home phone service, or calls on the move • Save with your Vonage internet calling plan wherever you are – unlimited international calling to 60+ countries with some plans • Use WiFi calling to make online phone calls and save cell minutes, avoid roaming charges when abroad and reach people when there’s poor coverage • Know who is calling you on your Vonage number - the app will use your contact book to tell you who is calling • Uses your contact book for easy, one touch dialing • Do Not Disturb – Easily turn on and off calls to the app (New) • Keep your mobile number private – Caller ID will show your Vonage number. (New) • Choose which number to display as your Caller ID – Home or Mobile. • Block unwanted calls to your Vonage line from your Recents or Call Settings. (New) • Boomerang - for international callers. No more missed call & callback frustration. Automatically connects to selected contacts using YOUR Vonage VoIP number - at no charge to them! (New) Getting Started • Download the Vonage Extensions VoIP app to your iPhone • Enter your mobile number, your Vonage VoIP phone number and your account password. • View the tour and accept push notifications to receive inbound calls. Note: Vonage VoIP service required. * Reasonable Use Policy applies to unlimited calling. Extensions® usage is combined with home phone usage under the policy. See www.vonage.com/reasonable_use_policy from more details. Calls made from mobiles may use airtime and incur charges, depending on your mobile plan. Pat: http://www.vonage.com/corporate/press_patents.php

About

SLYFONE

Obtain a genuine US mobile number for essential verifications and communications, alongside a global eSIM for data access in over 110 countries. This app ensures privacy, facilitates international calls, and provides reliable connectivity for travel and business.

Highlights
  • Virtual US mobile number
  • Global eSIM for data
  • App and account verifications
  • Two-factor authentication
  • International calls and texts
  • Spam blocking
  • No roaming fees
Features
Read full description

Get a Real US Mobile Number + Global eSIM in One Powerful App SLYFONE is the only app that gives you both: A real U.S. mobile number (not VoIP) for verifications, calls, and secure texting A global eSIM to stay connected with mobile data in 110+ countries Use SLYFONE to activate WhatsApp, protect your privacy, make international calls, and stay online wherever life takes you. What Makes SLYFONE Unique? Unlike VoIP apps, SLYFONE gives you a real mobile number you can use for app signups, banking, and secure 2FA. And with built-in global eSIM, you get instant, affordable data without SIM cards, roaming charges, or local carriers. Whether you're at home, traveling, or building your business, SLYFONE has you covered. Top Features Virtual U.S. Mobile Number - Activate apps like WhatsApp, Telegram, Zelle, PayPal & more - Receive SMS for 2FA or signups (works with banks, crypto, social media) - Make & receive calls or texts over Wi-Fi/data - Caller ID, voicemail, call forwarding, and spam blocking - Perfect second line for business or privacy Global eSIM Coverage - Get mobile data in over 100 countries — no SIM card needed - Easy to install and activate from the app - Avoid roaming fees while traveling - Use alongside your SLYFONE number for full global connectivity - Ideal for travelers, expats, digital nomads, and remote workers   Use SLYFONE For: - App & account verifications (WhatsApp, Uber, Binance, etc.) - Two-factor authentication (2FA) codes from banks and social platforms - Traveling without roaming or SIM swaps - Keeping your personal number private - Running your small business or side hustle with a dedicated line -Secure texting & calling while abroad All-In-One Communication Tools - Real US number (not VoIP) - Global eSIM (travel-ready) - Send/receive texts & calls - Spam call blocking - Call forwarding to any US/Canada number - Caller ID & voicemail transcription - Share media in messages - Number porting support - Free toll-free calls (no subscription needed) Subscription Plans A paid plan is required to activate and use your US number. - 3-Month Plan – $8.99 - Annual Plan – $29.99 - Outbound Credits – $10 for 1000 credits (1 credit = 1 SMS or 1 min call) No hidden fees. No free trial. Please review pricing before purchasing. Privacy Policy: https://slyfone.com/privacy/ Terms of Use: https://slyfone.com/terms.html

Screenshots

Vonage Home Extensions3 screens
SLYFONE4 screens

Verdict

The call

The clearest difference is in-app purchases: Vonage Home Extensions at none against SLYFONE's 7. Vonage Home Extensions also leads on ads (none vs shown) and review sentiment (50% vs 24%). SLYFONE's advantage is rating (4.6 vs 4.4). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SLYFONE sells 7 in-app purchases, starting at $14.99 per 3 months. Vonage Home Extensions asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SLYFONE holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Vonage Home Extensions has 4.7K ratings behind it against 774, so its average is the more settled of the two. Written reviews complicate that: 50% of Vonage Home Extensions's written reviews are positive against 24% of SLYFONE's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
Vonage Home Extensions versus SLYFONE: the parameters behind the verdict, then further details
ParameterVonage Home ExtensionsSLYFONE
PriceFreeFree
Rating4.4 (4.7K ratings)4.6 (774 ratings) — better
Positive reviews50.4% of reviews — better23.7% of reviews
Number of ratings4.7K — better774
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size59 MB94 MB
Age rating4+4+
DeveloperVonageMobileSphere, Ltd

Customer experience

Vonage Home Extensions

All ratings4,559 ratings
Positive85.0%
Neutral4.9%
Negative10.1%
Written reviews274 reviews
Positive50.4%
Neutral12.8%
Negative36.9%

SLYFONE

All ratings789 ratings
Positive89.2%
Neutral3.2%
Negative7.6%
Written reviews76 reviews
Positive23.7%
Neutral1.3%
Negative75.0%

User reviews

Vonage Home Extensions

From 4.7K App Store ratings

What we love

  • 🚀 Excellent service
  • 🚀 Convenient to use
  • 🚀 Great for international calls
  • 🚀 Reliable and dependable
  • 🚀 Seamless integration with mobile devices

Room to improve

  • 🐛 Frequent call drops/disconnections
  • 🐛 Poor call quality
  • 🐛 Unreliable app performance
  • 🐛 Outdated and buggy app
  • 🐛 Incompatible with newer devices

SLYFONE

From 774 App Store ratings

What we love

  • ⭐ Excellent app
  • 🙌 Saved me from a problem
  • 👍 Very good

Room to improve

  • 💰 Expensive subscription
  • 🔒 Unsafe app with harassment
  • 🐛 Non-functioning features
  • 🚫 Doesn't work as advertised
  • 📞 Poor call quality

Bugs and requests

Vonage Home Extensions

Reported bugs

5 issues
  • App crashes frequently
  • Incoming calls not ringing on mobile
  • Touchpad/keypad not working during calls
  • Caller ID not displaying properly
  • Recent calls not updating or syncing

Requested features

5 requests
  • Dark mode option
  • Ability to customize ringtones
  • Improved call log/recent calls functionality
  • Better integration with mobile contacts
  • Support for more devices and OS versions

SLYFONE

Reported bugs

4 issues
  • Account temporarily unavailable
  • Texts/codes not received
  • Calls not working properly
  • Login/sign-up issues

Requested features

3 requests
  • Fix international prefix support
  • Improve call forwarding
  • Add more features like Dingtone app

In-app purchases

None

Vonage Home Extensions

No in-app purchases

7 purchases

SLYFONE

Subscriptions2
  • Three Months Plan$14.993 Months
  • Yearly Plan$49.991 Year
One-time5
  • eSIM$3.00
  • 10 Dollar Credit Bundle$10.00
  • 25 Dollar Credit Bundle$25.00
Show 2 more
  • 50 Dollar Credit Bundle$50.00
  • 100 Dollar Credit Bundle$100.00

Questions

Is Vonage Home Extensions free?
Vonage Home Extensions is free to download, with no in-app purchases.
Is SLYFONE free?
SLYFONE is free to download, with in-app purchases available.
Which has better reviews, Vonage Home Extensions or SLYFONE?
SLYFONE is rated higher. Vonage Home Extensions averages 4.4 out of 5 from 4.7K ratings, while SLYFONE averages 4.6 from 774 ratings.
Do Vonage Home Extensions or SLYFONE have ads?
SLYFONE shows ads; Vonage Home Extensions does not.
Which is updated more often, Vonage Home Extensions or SLYFONE?
Vonage Home Extensions ships an update every 6 weeks, and SLYFONE every 6 weeks. Most recently, Vonage Home Extensions was updated on November 5, 2026 and SLYFONE on November 3, 2026.

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