Do you want to make the cheapest international phone calls straight from your mobile?

Tired of bad VoIP connections or of paying other internet calling providers’ expensive connection fees?

Travelling while on a business trip and hate paying huge roaming fees?

We have the solution! Check out Rinboo iPhone Application!

Just download Rinboo and sign up for a free account and start calling at a fraction of the rate charged by your usual phone operator. It's that simple!

This great innovative service can save you loads on your international calls, by routing your call over the internet instead.

MORE Talking, HUGE Savings!

Rinboo allows you to make the cheapest phone calls to any country using your mobile! It also allows you make FREE CALLS to other Rinboo users.

Rinboo is free to download and easy to use - it's just like your normal phone but with Free Calls and super cheap International rates. Reduce the cost of your international calls by up to 98%. Rinboo mobile applications lets you call and text on the move at an ultra-low international rates.

It's so simple to get started – All you need is the app and your Rinboo account!

Why to use Rinboo?

• FREE Calls
Unlimited FREE calls between Rinboo users – anywhere in the world!
• Save Loads of Money
Call family, friends, or colleagues abroad at some of the lowest rates in the world!
• Only Pay for the Calls You Make
There are no monthly fees, no trickeries, no behind the back charges, no setup fees, no hidden fees, and no extra charges!
• Call Anytime, Anywhere
Works on any phone! Call from your mobile, landline, or smartphone - anytime, anywhere, at a great rate!
• Live 24/7 Support

Rinboo iPhone Application Features
• Account's Balance Display
• Destination, rate information (Ability to check the cost to any destination)
• Can be used with any Internet Connection like WiFi, 3G/4G and EDGE networks
• Free unlimited Wi-Fi & 3G mobile broadband VoIP calls to other Rinboo users anywhere in the world
• Integrated with your phone's address book
• Calls to Mobile and Landline numbers (using our Pay-As-You-Go PAYG credit and Calling Plans)
• Making and receiving SIP calls from behind any VoIP blockades/firewalls
• Multitasking, receiving calls in background and sleep mode(using TCP connection)
• Multitasking, receiving calls in background mode using Keep Awake feature
• Redial button
• Call History (Last calls log) with call duration
• Loudspeaker
• Favorites
• Call Hold
• Call Forwarding
• Auto Answer (AA)
• Do Not Disturb (DND)
• Echo cancellation
• Built-in tunnel* for passing through VoIP blockades
• Summary window showing last call cost and duration

What's New

Version 1.3.8

- Transfer Credits: You can now transfer credits to other Rinboo users at ZERO cost
- Transfer Calling Plan: You can now transfer plans to other Rinboo users for FREE
- My Calling Plans: You can now check your active, pending, and expired calling plans

*All these features can be accessed from Account >> Special Services

- Crash issue fixed on iPhone 6S & iPhone 7 having iOS 10 and above
- Resolved delay issues when purchasing through iTunes
- Fixed issue of putting Rinboo Calls on hold when receiving a normal phone call
- Instant and easy access to dial pad screen to get connected to your loved ones quickly
- General Improvements and bug fixes

Please share your ideas and comments by sending an email to Thank you!

Ratings and Reviews

3.7 out of 5
13 Ratings
13 Ratings



Working alright! No problem so far.

Not opening


Not opening click 10 times and then it will open once

Ios 11 not working


It’s not opening Okay ios 11

Iphone 7 plus

Developer Response

Speaking to you is the Customer Service Manager and I'm personally intervening on your case.

Kindly send us your phone number by email to so we immediately deal with the matter!

My team will help you at once, when you send us your phone number. We are pleased to Serve.


IMC Telecom Inc.
57 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, German, Italian, Japanese, Korean, Polish, Russian, Spanish
Age Rating
Rated 4+
© 2015 IMC Telecom Inc.
In-App Purchases
  1. $5.25 Credit $6.99
  2. $12.25 Credit $15.99
  3. $9.90 Credit $12.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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