Comparison

vtxMobile vs Second Phone Number

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

Head to head
About

vtxMobile

This app transforms your mobile device into a business phone extension, enabling free inter-office calls and cost-effective international communication. It offers features like voicemail, call transfer, and team messaging for seamless on-the-go business operations.

Highlights
  • Free inter-office extension calls
  • Company caller ID
  • Cost-effective international calls
  • Three-way calling
  • Call transfer
  • Voicemail
  • Team messaging
Features
Read full description

Exclusively for all VTX IP PBX customers: Wi-Fi or data plan required. vtxMobile is part of our unified communications solution that turns your device into a business line or office phone extension on the go! - Dial and answer inter-office extension calls from worldwide for free - Make calls showing your company caller ID. - Make cheap calls from anywhere to anywhere in the world with your existing VTX service plan - Three-way calling - Transfer calls to another extension (worldwide) or another phone number - Voicemail - Call history, call waiting, transfer calls to another extension or phone number - Automatically populates interoffice directory as co-worker contacts - Integrates with your device’s contact list, for easy dialing. It allows you to make cheap international calls wherever you are, without using your wireless airtime or roaming charges. - International Coverage: Save 90% on international roaming calls, when you’re traveling outside the U.S. and Canada with free Wi-Fi access. - Team messaging and collaboration - Answering rules management Legal Notes - vtxMobile works best on WiFi. Spotty signals of data network may hinder voice quality. - Use of vtxMobile with mobile data network may result data charges from your wireless provider. - vtxMobile is not responsible for the cost of international calls made from the iPhone or iPad dialer or other applications. Therefore, if you did not use the VTX keypad to dial the international calls, then you know that the VTX VoIP app is not being used, and the call will be handled by your mobile operator at your expense.

About

Second Phone Number

Obtain a private US second phone number for your iPhone without needing an extra SIM or device. Make and receive calls and texts over Wi-Fi or cellular data, keeping your personal number secure for various needs.

Highlights
  • Private US second phone number
  • No extra SIM or device required
  • VoIP calls over Wi-Fi/cellular
  • Send and receive SMS
  • Call US and Canada numbers
  • Block unwanted numbers
  • Call and message history
Features
Read full description

Get a private US second phone number on your iPhone without another SIM, eSIM, or extra device. Use your second number over Wi-Fi or cellular data. Call US and Canada phone numbers, receive calls, send SMS to supported US numbers, and receive SMS on your US number. Keep your personal number private when you need a second line for everyday calling, texting, travel, projects, or work. Use one device for your personal number and your second US number. Keep your purchased phone number while your subscription is active, and manage calls and messages inside the app. Features: - Get a US second phone number - No extra SIM, eSIM, landline, or second device needed - Call US and Canada numbers - Send SMS to supported US numbers - Receive SMS on your US number - Receive calls on your second number - Make and receive VoIP calls over Wi-Fi or mobile data - View recent incoming, outgoing, missed, failed, and canceled calls - Pick recipients from your iPhone contacts, with your permission - Block unwanted numbers - Manage your account, subscription, phone number, privacy policy, terms, and support from Settings - Delete your account from inside the app when needed Calling availability: Outbound calling is currently supported for USA and Canada destinations, including eligible mobile numbers, landlines, and toll-free numbers. Messaging availability: SMS availability is focused on supported US routes. International SMS is not supported. Subscription information: Second Phone Number supports subscription access for premium features. Plans may include weekly, monthly, or annual billing options, depending on availability. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel subscriptions in your Apple ID account settings. Important: Second Phone Number is not a replacement for your mobile carrier, landline, or emergency service access. Emergency calling limitations may apply. You should maintain another reliable way to contact emergency services. Terms: https://hastree.com/businessphonenumber/terms Privacy Policy: https://hastree.com/businessphonenumber/privacy

Screenshots

vtxMobile4 screens
Second Phone Number4 screens

Verdict

The call

The clearest difference is rating: vtxMobile at 5.0 against Second Phone Number's 4.2. vtxMobile also leads on in-app purchases (none vs 3). Second Phone Number's advantage is update cadence (every 2 weeks vs every 2 months) and ratings volume (5 vs 1). On price, ads, device support and iOS requirement 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. Second Phone Number sells 3 in-app purchases, starting at $7.99 per 7 days. vtxMobile asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

vtxMobile holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Second Phone Number has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

vtxMobile ships an update every 2 months, Second Phone Number every 2 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
vtxMobile versus Second Phone Number: the parameters behind the verdict, then further details
ParametervtxMobileSecond Phone Number
PriceFreeFree
Rating5.0 (1 ratings) — better4.2 (5 ratings)
Positive reviews—100.0% of reviews
Number of ratings15 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size124 MB63 MB
Age rating4+4+
DeveloperKloud Communications Inc.HASTREE TECHNOLOGIES PRIVATE LIMITED

Customer experience

vtxMobile

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Second Phone Number

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

vtxMobile

No in-app purchases

3 purchases

Second Phone Number

Subscriptions3
  • Weekly Subscription$7.997 Days
  • Monthly$14.991 Month
  • Yearly$119.991 Year

Questions

Is vtxMobile free?
vtxMobile is free to download, with no in-app purchases.
Is Second Phone Number free?
Second Phone Number is free to download, with in-app purchases available.
Which has better reviews, vtxMobile or Second Phone Number?
vtxMobile is rated higher. vtxMobile averages 5.0 out of 5 from 1 ratings, while Second Phone Number averages 4.2 from 5 ratings.
Do vtxMobile or Second Phone Number have ads?
Neither vtxMobile nor Second Phone Number shows ads.
Which is updated more often, vtxMobile or Second Phone Number?
vtxMobile ships an update every 2 months, and Second Phone Number every 2 weeks. Most recently, vtxMobile was updated on October 6, 2026 and Second Phone Number on October 24, 2026.

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