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Cross-platform VOIP mobile app

I need a PoC for a cross-platform VOIP app, with the following features:

1. Allows users to login using their LinkedIn or there Google accounts

2. Allows a logged-in user to see all other logged-in users

3. Allows users to establish a VOIP call with any other online user

Technical details:

1. Should work on both Android and iPhone

2. A server-less solution is OK (no need to spend time on writing server side code), but I need to know in advance the monthly fees I'll have to pay to run the solution

3. Usage of 3rd party VOIP providers is OK, but again I need to know the costs in advance

4. Clean/clear code is very important... Also I'll need a documentation on how to build and run the code is my environment

Please bare in mind when bidding that this project is mainly about finding good existing APIs, and integrating them in a cross-platform application, so it's really simple if you know what you're doing

Skills: Android, iPhone, Java, Mobile App Development, VoIP

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About the Employer:
( 5 reviews ) Giza, Egypt

Project ID: #15658611

6 freelancers are bidding on average $792 for this job

aistechnolabs

Greetings Thanks for the opportunity. I am Krishna from AIS Technolabs. We have Good experience on your all features requirement, please review our portfolio: Relevant Skills and Experience [login to view URL] More

$3917 USD in 40 days
(56 Reviews)
8.7
$255 USD in 14 days
(30 Reviews)
5.0
mmdnow

Hi Mate, We are expert in iPhone & Android development, we worked on ecommerce,chatting,map feature,payment integration and social event app too, we build new and do changes in existing app as need. Relevant Skills an More

$222 USD in 3 days
(5 Reviews)
4.7
anuragiitk

I am an IITK graduate and I have 11 years of experience in software development. I have 100% completion rate and I have finished all the projects with the highest level of customer satisfaction. Relevant Skills and Ex More

$155 USD in 3 days
(19 Reviews)
5.2
LuckyQ

Hello , My Name is Sam , I am Full Stack web and app developer . I'd read the Project details extremely carefully and I am absolutely sure that I can do the It very well . Relevant Skills and Experience To Know idea a More

$155 USD in 3 days
(1 Review)
3.5
Fganatra

Before Awarding Project to Any Freelancer Please Discuss With Us -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- We have gone through the details that you have provided, and we are wil More

$50 USD in 3 days
(3 Reviews)
3.0