OTO Free International Call
Communication
5 Million+ installs
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- CategoryCommunication
- PlatformAndroid
- Developeropenvacs
- In-app PurchasesNo
- Installs5 Million+
- Updated2026-06-03
- Size10 M
- Version3.1.1
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Editor's Review
OTO Free International Call is a communication app from openvacs. The developer sums it up as: "A free international call service with no international call charges." With 5 Million+ installs on Google Play, it holds an average rating of 3.4 from 24.4K user ratings. The latest version (3.1.1) was released on 2026-06-03, so the app is still being actively updated. Good to know: it needs about 10 MB of storage.
How To Use?
Free International Phone Calls
Why OTO Free International Phone Calls?
call center : +82-2-16000546
Google Play
Description
OTO Free International Call app provides free international calls and it doesn't charge any international call fee, while it uses your additional/video call minutes given monthly by your carrier company.
[Main Functions]
★ Free International Phone Calls
- You may place free international phone calls to the United States, Canada, Japan, etc. to most of the countries in Korea. (However, free phone calls are available according to the payment plans of smartphones.)
★ Why OTO Free International Phone Calls?
1. OTO Free International Phone Call is free because it does not incur costs for any international phone calls placed.
2. You may use international phone calls via the local voice phone bills, so no worries.
3. Unlike other services that offer free service to a limited range of countries, OTO offers free phone calls to most of all countries.
If you encounter any inconveniences using our service, please do let us know. We are always all ears for your valuable opinions.
- website : www.otocall.com
- call center : +82-2-16000546
Screenshots
3.4
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