# Duo Caller - 2nd Phone Number — Second Line for Text & Calls > Virtual phone number for international calls, texts, and online registrations. (iPhone/iPad app by Zaur Ruidze.) - Source: https://appshunter.io/ios/app/duo-caller-2nd-phone-number/id6466172670 (this page in markdown: same URL + `.md`) - Developer: [Zaur Ruidze](https://appshunter.io/developer/1793765849) - Category: Business, Utilities - Price: Free with in-app purchases - Rating: 4.49/5 from 388 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 14.3 · 67 MB - Languages: English - Released: 2023-09-21 - Data updated: 2026-06-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/duo-caller-2nd-phone-number/id6466172670/reviews.md ## What is Duo Caller? Our app allows you to easily purchase a virtual phone number, which can be used to make calls to more than 20 countries, receive and send messages. You don't need to buy a SIM card from an operator, sign a contract, or pay additional fees.We offer several subscription options, from one week to one year.  To top up your balance, use the internal currency, which you can use to pay for calls and messages. What virtual numbers can be used for: • make calls around the world; • receive messages; • send messages* (there may be restrictions depending on countries and the number to which you send messages). What virtual numbers can be used for: • register with online services; • register for cab services, online booking, delivery services; • using the number as a second number for work, family, friends. Main features: • incoming and outgoing calls; • sending and receiving messages* • sending and receiving MMS; • call and message history; • replenishment of balance with virtual currency; • purchase of several virtual numbers; • and much more. What are the advantages of virtual numbers: • you do not need to buy a SIM card from an operator; • you do not have contracts, additional payments and fees; • it's quick and easy to get a number; • you can choose the tariff plan that is perfect for you. By using DuoCaller, you are agreeing to our Privacy Policy and Terms of Use: https://duocaller.com/privacypolicy.html & https://duocaller.com/tos.html ## Key features - Virtual phone number - International calls & texts - No SIM card required - Online service registration - Secondary phone line - Subscription plans - In-app currency ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Month, Additional | $19.99 | per month | | 6 Months | $49.99 | per 6 months | | Month | $19.99 | per month | | Week, Trial | $7.99 | per 7 days | | Week | $7.99 | per 7 days | | Month, Trial | $19.99 | per month | | 3 Months, Trial | $39.99 | per 3 months | | Year, Trial | $59.99 | per year | | Week, Additional | $7.99 | per 7 days | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 100 credits | $2.99 | one-time | | 200 credits | $3.99 | one-time | | 500 credits | $5.99 | one-time | | 1000 credits | $19.99 | one-time | ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/duo-caller-2nd-phone-number/id6466172670/reviews.md ### 1/5 — Not working!!!! *2025-12-18* They took my money, but the app doesn't work!!! Don't waste your money on a pointless app!!! You'll only be paying off your credit , but you won't be able to text or call anyone. They're scammers. ### 1/5 — Scam *2025-05-23* Free trial scam. I tried to sign up for free trial and it was not working and still they charged me $40. I never signed up for the service or used it, still I was charged and apple refuses to refund me. ### 1/5 — Stupid App *2025-03-21* The dumbest app ever!!! Why do I need to watch adds for credits after subscribing!!!?? Then you can’t even make a call after watching endless ads!!! Just stupid ### 1/5 — Literally doesn’t work *2025-02-13* It makes no sense that I cannot use the number I paid for. ### 5/5 — It good secure and reliable *2025-01-12* It good secure and reliable ### 1/5 — DOESN’T WORK AT ALL *2025-01-05* Doesn’t text or make calls. ### 5/5 — God *2024-12-18* Then ### 1/5 — Seems good but its useless *2024-09-12* I cant send text messages from a US number to other US numbers? Why? **Developer response:** Good afternoon! Very sorry to hear about this problem, can you please contact us by e-mail? ### 1/5 — Bad *2024-09-06, version 1.6.1* Tried to use this application for verification of site but it’s not working. No code and they even charge me $9.99 but still not working out ### 1/5 — Charged me with the press of one button doesn’t allow me to cancel *2023-11-04* Charged me with the press of one button and before I new it I was paying for this dialer without option to cancel because I need to login to my email but I never even created an account and there’s no button to login to my email in the app. **Developer response:** Please contact us by email, we will try to sort out the situation. ## Frequently asked questions about Duo Caller ### What is this app? This application allows you to purchase and use a virtual phone number. This virtual number can be used to make and receive calls to over 20 countries, send and receive text messages, and even MMS. It provides a convenient alternative to traditional SIM cards for various communication needs. ### How do I pay for calls and messages? The app utilizes an internal virtual currency to pay for calls and messages. You can top up your balance with this virtual currency, which is then used to cover the costs of your communication activities. Subscription options are also available for different durations. ### Can I use this for online registrations? Yes, the virtual numbers provided by the app are suitable for registering with online services. This includes platforms like cab services, online booking sites, and delivery services. It's a practical way to keep your primary number private for such registrations. ### What are the advantages of using a virtual number from this app? The primary advantages include not needing to purchase a physical SIM card from an operator, avoiding contracts, and eliminating additional fees. It offers a quick and easy way to obtain a number and allows you to choose a tariff plan that best suits your needs. ### Is this app available on all devices? While the description doesn't explicitly state compatibility, apps of this nature are typically available on both iOS and Android smartphones. Users can usually find it on the respective app stores for their devices. ## Version history (last 5 releases) ### 1.9 — 2025-09-25 Dear friends, thank you for staying with us. In this update, we’ve improved the app’s stability and fixed several important bugs. ### 1.8 — 2025-07-14 Dear friends, thank you for staying with us. In this update, we’ve improved the app’s stability and fixed several important bugs. ### 1.7 — 2025-06-10 Dear friends, thank you for staying with us. In this update, we’ve improved the app’s stability and fixed several important bugs. ### 1.6.1 — 2024-08-07 Hello, dear friends! This update improved the stability of the app. Thank you for staying with us! ### 1.6 — 2024-07-28 Hello, dear friends! This update improved the stability of the app. Thank you for staying with us! ## Apps similar to Duo Caller | App | Rating | Price | Category | | --- | --- | --- | --- | | [Second Phone Number ™ 2nd Line](https://appshunter.io/ios/app/second-phone-number-2nd-line/id1462292880) | 4.5 (4,641) | Free | Business | | [OnPhone: Second Number & eSIM](https://appshunter.io/ios/app/onphone-second-number-and-esim/id1564051387) | 4.6 (50,880) | Free | Business | | [2nd Phone Number, Second Line](https://appshunter.io/ios/app/2nd-phone-number-second-line/id6737282216) | 4.4 (199) | Free | Business | | [2nd Phone Number: BusinessLine](https://appshunter.io/ios/app/2nd-phone-number-businessline/id1584777868) | 4.6 (3,757) | Free | Business | | [2nd Line - Second phone number](https://appshunter.io/ios/app/2nd-line-second-phone-number/id1479964130) | 4.6 (14,927) | Free | Business | | [Text Phone Number: Talk Safe](https://appshunter.io/ios/app/text-phone-number-talk-safe/id6499511360) | 4.6 (2,388) | Free | Business | ## More apps by Zaur Ruidze - [Receive SMS Online, SMS Getter](https://appshunter.io/ios/app/receive-sms-online-sms-getter/id6738870881) All apps by Zaur Ruidze: https://appshunter.io/developer/1793765849 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*