We looking for a developer to build a mobile voip app to make calls and have a call back function.

If you have previous knowledgement on codecs is fantastic!

The app must access the phone contacts list to make calls.

Require validation of the registered phone number to receive callback calls. When entering a number, sms confirmation must be sent with a validation code.

As an example you can check MobileVOIP app. Or Fring.

In a second phase of development we intend to enter videocall, free sms and text message between users of the same group.

This project belong to a American group with a branch in Lisbon.

If you own an agency or have a great apps portfolio we can negotiate. Let me know! Send me a message through this form.

Dovednosti: HTML5, iPhone, jQuery / Prototype, Mobile App Development, Objective C

Zobrazit více: the agency group, mobile app agency, app developer agency, Lisbon, agency phone, access project send sms, phone number confirmation, text free app mobile, fring voip, mobile voip call, receive sms mobile number, fring code, iphone app development sms app, iphone check free, sms confirmation project, free phone call app, free sms send project, list function app iphone, enter phone number form, confirmation sms form

O zaměstnavateli:
( 0 recenzí ) Portugal

Identifikační číslo projektu: #5130773

27 freelanceů na tento projekt zveřejnilo nabídku v průměrné hodnotě $2868


************************** Please check my similar app first before reading my cover letter. [login to view URL] You don't have to hire me, but I want you Další

$6185 USD za 30 dní
(88 Recenzí)

I will assign 2 Dedicated developer and 1 Graphic designer and they will send you daily work report and 2 times video updates in a week. Check our mobile work portfolio [login to view URL] Další

$3092 USD za 30 dní
(68 Recenzí)

Awards winning apps. Android & IPad [login to view URL] Award winning app - IPhone [login to view URL] Vehicle barcode scanner for ios, web .. [login to view URL] Další

$3092 USD za 20 dní
(40 Recenzí)

Greetings! I have been through with your job posting and I am very interested on your project. Please review my recent projects that are most like this one at the end of letter. I have 7+ years of experience in Další

$3092 USD za 20 dní
(44 Recenzí)

Hello, Greetings! I have been through with your requirement , we have developed the apps for VOIP, please have a look : Application - (Mobiologic,VOIP) Link – ://[login to view URL] Další

$3092 USD za 32 dní
(12 Recenzí)

***Please stop here and Read my cover letter to the end seriously.*** You will NOT find a better contractor than me. Guaranteed.  I'm a serious bidder. Dear Sir. I just applied after read your job posting carefull Další

$2886 USD za 20 dní
(69 Recenzí)

Greetings from AppStudioz! We've gone through the requirement details and shall provide you our understanding, project plan, timeline & cost estimation for the project after a complete analysis. I would like to i Další

$2319 USD za 10 dní
(9 Recenzí)

Hi, I have read your requirement carefully. I am an iPhone | Android software expert with rich experience. I have done many successful iPhone | android apps and games: single, multi-player, cocos2d, unity3d. And Další

$2989 USD za 10 dní
(10 Recenzí)

Hi, I'm an expert android app developer with 5+ years of experience. I am an expert in Native Android SDK, HTML5, Database(MySQL,MSSQL),CSS,DHTML,JQuery,etc. I believe my skills would be ideal for your project. Další

$2989 USD za 20 dní
(11 Recenzí)

Respected Sir, --> I have gone through your project description in detail --> I am really interested to work with you --> I am very sure that i can get the project done for you within the time limit --> We Další

$3500 USD za 30 dní
(43 Recenzí)

A proposal has not yet been provided

$3000 USD za 30 dní
(14 Recenzí)

Hello, Pleased to see your project posting. I've gone through your project details and hereby I'm outlining my understanding about your project: ============== Project title: SWB NETWORK Concept: Create a VOIP app Další

$3000 USD za 30 dní
(7 Recenzí)

Hello , Greetings from iCoderz! Please have a visit in the following LINK to know how skillful APP developers we are Elance: [login to view URL] We have huge expertise in de Další

$2894 USD za 40 dní
(18 Recenzí)

Hello, Thank you for reading our project proposal, i had assumed the project scope we are very much sure we can do this project in the given period of time please communicate with us so that we can discuss the project Další

$3000 USD za 35 dní
(5 Recenzí)

Thanks for your job posting. I saw your job description carefully. I have good experiences in iOS/Android/Web developments. You can check the result via Testflight per 1~3 days. So I can delivery perfect result Další

$2525 USD za 25 dní
(5 Recenzí)

Hi, We have read your Requirements and would like to discuss further as we have strong hands in Iphone, Android & other mobile application development & completed over 150 projects in last 5 years. Please find be Další

$3092 USD za 28 dní
(5 Recenzí)

Thanks for your good posting. I have rich experience in bluetooth, gps, voip... Please check my urls in itunes. [login to view URL] [login to view URL] Další

$3608 USD za 20 dní
(3 Recenzí)

Hello,Thanks for your job posting. I am very interesting for your project. I have rich experiences in Mobile App/Game Developments for 5 years. I already developed many mobile apps with social networks(such as Fa Další

$2783 USD za 25 dní
(6 Recenzí)

Hi, * We have checked your details regarding an application that able to make audio and video calls. = Able to make audio and video calls for free. = Able to make Group Calls = Able to send messages * We can Další

$2577 USD za 30 dní
(15 Recenzí)

Hello there, Let me introduce myself. I am Tahsinul of the project manager of Workspace firm situated in Dhaka, Bangladesh. we have 13 different teams to work in different web and d Další

$2319 USD za 40 dní
(2 Recenzí)