DuoLine vs SMS Online
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DuoLine
Obtain a secondary phone number for private calls, business use, or social media verification. Manage multiple lines easily without a second device. Enjoy unlimited calling and international access with robust privacy options.
- Second phone number for private use
- Business communication line
- Social media verification codes
- Unlimited calling
- International calls
- Ad-free experience
- No extra SIM card needed
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Duo Line is a revolutionary mobile application that provides users with a second phone number to use for private communication or business purposes. With Duo Line, you can make and receive calls . Uninterrupted calls anywhere, local or international, without expensive roaming to recipients' Local phone number. Have a private line second phone number for private calls . - Do you want to get a verification code to register on some social media platforms? It is now very easy to have a second phone number on social media platforms where you can get a verification code for whatsapp, twitter and gmail. # SECOND PHONE NUMBER # * The app offers unlimited calling, allowing users to communicate as much as they want without worrying about extra fees or overages. This feature is especially beneficial for businesses that require a second phone line for customer service or sales. * The app's user-friendly interface makes it easy to manage both phone lines in one place, without the need for a second device. # UNLIMITED # In addition, Duo Line can use these phone numbers for users to register on the Social media platform of their choice. Get ready to sign up for unlimited social media platforms with Duo Line. # PRIVATE PRİVACY # Overall, Duo Line is an excellent solution for anyone who needs a scret second phone number. With its extensive features, user-friendly interface, and robust privacy options, it's the perfect app for private communication, business needs.Try it today and discover the convenience and flexibility that Duo Line can bring to your life. Why Duo Line ? Ad-free experience: Enjoy unlimited calls without being disturbed by ads Real second phone number Private phone number for social media sign-up International phones with second phone number service. Get a good cell phone number without an extra SIM card Any other situations that you don’t want to expose your real phone number. # SMS - Coming Soon! # Sometimes he can untie someone via SMS, but from another number. Soon you will be able to send SMS directly through our app. We will notify you when this feature becomes available.
SMS Online
Receive SMS messages securely and privately using virtual phone numbers. Ideal for account verification on various online services and apps, offering a disposable second number for enhanced privacy and convenience.
- Instant disposable numbers
- Easy SMS reception
- Simple account verification
- Enhanced privacy
- Transparent pricing
- Virtual numbers for WhatsApp, Telegram, Instagram
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We offer virtual numbers to receive SMS messages easily and securely. Ensure your online security and privacy with our virtual number service. Perfect for quick and easy SMS reception, our platform is the ideal solution for creating accounts on various services and apps. Enjoy the convenience of a disposable second number. SMS-Virtual provides affordable virtual numbers for both business and personal use. Whether you need a second number for WhatsApp or to verify accounts like Instagram, Telegram, or Google Gmail, SMS-Virtual has you covered. Our services make it simple and cost-effective to get a WhatsApp Virtual Number, Telegram Virtual Number, or a WhatsApp Anonymous Number. Enjoy the convenience and security of virtual numbers with SMS-Virtual, all at the best prices! # Key Features: ・Instant Disposable Numbers: Get a secondary number within seconds for all your online needs. ・Easy SMS Reception: Receive SMS online without needing a physical SIM card. ・Simple Account Verification: Verify accounts on various platforms without using your real phone number. ・Enhanced Privacy: Protect your personal phone number from unwanted exposure. ・Clear Pricing: Enjoy our transparent and fair pricing with no hidden costs. # Steps to Use: ・Select a Country: Choose from the available countries and get a WhatsApp Virtual Number, Telegram Virtual Number, or WhatsApp Anonymous Number. ・Open the App: Launch the WhatsApp, WA Business, Instagram, Telegram, or Google Gmail application. ・Enter the Number: Input the virtual number you received into the application. ・Get the Code: Open the SMS-Virtual app, copy the SMS verification code. ・Verify: Paste the verification code into the application you chose. ・You're All Set: Enjoy using your virtual number in the app! ・Get the SMS directly in the app within 20 minutes. If no SMS is received before the number expires, you won't be charged. With SMS-Virtual's WhatsApp second line or WhatsApp foreign line service, you can manage your WhatsApp Business account with a separate number. This lets you keep your business and personal conversations separate, helping you manage both more effectively. Brand Statement: This app is independent and not affiliated with WhatsApp, Instagram, Telegram, Google Gmail, or other services. The names, trademarks, logos, and banners of these services are the property of their respective owners. All mentioned trademarks, product names, and company logos belong to their respective owners. EULA: https://bit.ly/3WubOwy Privacy Policy: https://bit.ly/4cXtrw9
Screenshots
Verdict
The clearest difference is review sentiment: SMS Online at 85% against DuoLine's 0%. SMS Online also leads on rating (4.4 vs 2.0) and ratings volume (107 vs 2). DuoLine's advantage is update cadence (every 8 days vs every 6 months) and iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and monetization model 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. DuoLine sells 6 in-app purchases, starting at $4.99 per 7 days and SMS Online sells 6 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
SMS Online holds the better App Store score, 4.4 against 2.0. That said, the two scores are not equally well evidenced: SMS Online has 107 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of DuoLine's written reviews are positive against 85% of SMS Online's.
DuoLine ships an update every 8 days, SMS Online every 6 months. Both last shipped on November 12, 2026.
| Parameter | DuoLine | SMS Online |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (2 ratings) | 4.4 (107 ratings) — better |
| Positive reviews | 0.0% of reviews | 85.4% of reviews — better |
| Number of ratings | 2 | 107 — better |
| Update frequency | Every 8 days — better | Every 6 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 57 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | SORO SONS BILGI TEKNOLOJISI TICARET LIMITED SIRKETI | Huseyin Varelci |
Customer experience
DuoLine
SMS Online
Bugs and requests
DuoLine
Not enough reviews yet to summarise bugs or requests.
SMS Online
Reported bugs
2 issues- Subscription issues
- Delayed or no number delivery
Requested features
2 requests- Ability to receive calls
- Promo code availability
In-app purchases
DuoLine
- 1 Number Weekly$4.997 Days
- 1 Number Monthly$9.991 Month
- 3 Number Weekly$12.997 Days
Show 3 moreShow fewer
- 5 Number Weekly$19.997 Days
- 3 Number Monthly$24.991 Month
- 5 Number Monthly$44.991 Month
SMS Online
- Virtual Number Unlimeted SMS$7.997 Days
- Virtual Number Unlimited SMS$11.991 Month
- Virtual Number 1 Credit$9.99
- Virtual Number 3 Credit$14.99
- Virtual Number 5 Credit$19.99
Show 1 moreShow fewer
- Virtual Number 9 Credit$29.99
Questions
Is DuoLine free?
Is SMS Online free?
Which has better reviews, DuoLine or SMS Online?
Do DuoLine or SMS Online have ads?
Which is updated more often, DuoLine or SMS Online?
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