vtxMobile vs Second Phone Number
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Free inter-office extension calls
- Company caller ID
- Cost-effective international calls
- Three-way calling
- Call transfer
- Voicemail
- Team messaging
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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.
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | vtxMobile | Second Phone Number |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 124 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Kloud Communications Inc. | HASTREE TECHNOLOGIES PRIVATE LIMITED |
Customer experience
vtxMobile
Second Phone Number
In-app purchases
vtxMobile
No in-app purchases
Second Phone Number
- Weekly Subscription$7.997 Days
- Monthly$14.991 Month
- Yearly$119.991 Year









