Xamarin Voice/Text Chat App (Android, IOS) - Phase one

Completed Posted 4 years ago Paid on delivery
Completed Paid on delivery

Hi, we need an experienced Xamarin developer to develop a cross-platform (Android/iOS) chatting app for internal use of a company.

The project is split into phases. The first phase is a VoIP SIP softphone that supports Voice calling, Instant Messaging, File Transfer and Presence. Exactly the same as Whatsapp.

The following features are required in the app for this phase of the project:

- Voice calls

- Voice conference calls

- Direct instant messaging (IM)

- Group IM

- File sharing and forwarding

- Searching capabilities in IM history and shared files

- Preferences for notifications of incoming message, sounds, etc.

- Utilizing push notifications to wake up the app.

- logging/editing call duration and adding notes after calls/IM sessions. Save to server (SQL Server)

The app is very similar to WhatsApp in features, only with the addition of Call/IM sessions logging.

We are using FreePBX server. We may consider changing it if some of the features can't be implemented.

We don't want to develop everything from scratch. We are looking into buying a VoIP SDK to simplify developing the app, such us ABTO SDK [login to view URL]

The SDK will make developing the app much easier and faster, so please put this into consideration when bidding. We didn't buy any SDK licenses yet, so, please let us know If you know a better SDK or you have worked with a different one that you are already familiar with.

We prefer Xamarin, but we may consider React Native if your proposal is excellent (technical and financial). We will not consider web apps at all.

The payments will be split into milestones, 3-5 milestones or what you propose. Each milestone will be funded before you start working. No down payment.

Next phases will be integration with company CRM system and MS outlook.

In your proposal, please mention:

- Past experience in Xamarin/React Native and any apps that you have developed using these tools/languages.

- If Xamarin, are you going to use Xamarin native or Xamarin forms? Why?

We will not waste our time with a copy & paste proposal. At least, let us know that you have read the requirements and ask us about any point.

Update: A very important note: The source code must be handed over to us and all the work done will be our exclusive property. The source code must be released at every milestone.

Mobile App Development Android iPhone Xamarin React Native

Project ID: #20791183

About the project

48 proposals Remote project Active 4 years ago

Awarded to:

nadjibus

Hello. My name is Amar, I'm a senior .NET/Xamarin developer with more than 15 years experience. I'm very interested in your chat app, and will be pleased to work on it. I checked ABTO VoIP website, and they offer a Xa More

$1750 USD in 30 days
(13 Reviews)
6.5

48 freelancers are bidding on average $1629 for this job

omairusaf

Hi, I have been offering mobile application services across the globe for over 7+ years. I have deep knowledge of Xamarin ios , Xamarin android and cross platform applications. I can make use of the latest Xamarin tec More

$1750 USD in 30 days
(64 Reviews)
8.3
GoodJob4W

Hello. This is Qi-Feng Jin from China and I hope you are doing well. I have read the project description carefully and am really interested in your project. I have rich experience in mobile app/web development for more More

$1375 USD in 7 days
(48 Reviews)
7.9
yashtechsolution

Hello, I have build a similar project in my past experience so I have experience in your project, I am a full stacking developer, I have worked many Application, I will provide you initial features which you require w More

$1000 USD in 20 days
(105 Reviews)
7.7
langlangFan

Hello, I have 7+ years of cross platform mobile development. I am very good at XAMARIN. I also have much experience in nodejs, angularjs and mongodb. I am sure that i can complete your project perfectly. Thanks for rea More

$2500 USD in 7 days
(71 Reviews)
7.5
JiangYinJi23

My name is Yin Ji. I am mobile&Web, full time developer and there are 19 developers and graphic designers in my team. We have developed over 110 mobile apps and 150 websites in past time. I am Xamarin Expert I underst More

$1750 USD in 30 days
(26 Reviews)
6.9
Software9981

Hello I hope you're doing well. I read your project needs carefully and found my skills relevant to your project we are a team of expert developers and have more than 6 years of experience in the same domain. As per More

$1375 USD in 7 days
(23 Reviews)
6.9
kkc1985612

How are you? I am confident I can full fill your requirement and I provide my skills in hopes of working with you. I am full-stack developer and I have 3+ years of experience in the iOS(iPhone, iPad) & Android app deve More

$1500 USD in 45 days
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6.1
shivmirthyusl

We are a 7+ years old mobile app development and services company. From our global delivery center in India, we have helped several customers address their problems by offering these solutions in the mobile application More

$1375 USD in 15 days
(11 Reviews)
6.3
honeyocs803

Hi There! Expert here! Contract me! I can easily complete this task and exceed your expectations. You would NEVER regret it. Let's get started TODAY! Thanks

$1000 USD in 7 days
(7 Reviews)
4.3
letcheta

Hi, We are a IT startup company which has innovative skills in IT. Our activities are: -Full stack development (Android,React-native,Spring java,mysql|postgres) -Telecommunications/Telephony with asterisk core based PB More

$1750 USD in 14 days
(2 Reviews)
3.8
shefalibsoni

- I have worked on React Native in the past. Have build a couple of applications as well that works perfectly on both Android and iOS devices. - Since I am not planning to use Xamarin then I won't be able to answer thi More

$1500 USD in 20 days
(2 Reviews)
3.5
greenforest0204

Hello i am very interested in your post project since i have rich experience on this kind of project. Actually, i am feeling confident about to give you perfect result in time. please call me Dmitrii. looking forward t More

$1375 USD in 7 days
(1 Review)
2.9
zeromiletech

Hi There, Thank you for inviting us to bid on this project of yours. We have gone through your details and would like to offer our Xamarin dedicated resource on this project of yours. We are ready to start the project More

$1750 USD in 90 days
(7 Reviews)
3.0
alyelhaddad

Hi there - I'm Aly, First off, let me express my pleasure for being honored by your invitation for me to bid on this project. I've read your project details and I have multiple concerns. But before that, let me introd More

$1700 USD in 30 days
(3 Reviews)
2.7
naishodayo

Hello Sir, how are you? I am an excellent Mobile App Developer that have various enough experiences of 10+ years, so I have good lots of app sources and instances. I checked your requirements and understood what you wa More

$1375 USD in 10 days
(1 Review)
2.4
exoxiainfotech

Hi there, Hope you are doing well. I have read your requirements about your project very deeply and I believe that I can complete your project within your budget and time. A, Desired website and application [ IOS and More

$1650 USD in 30 days
(7 Reviews)
3.3
erShashi

​Hi, I am interested to work on this project. I am an ex-Microsoft employee and have 10+years experience in software development. I went through project requirement and it is very much clear to me. One thing that you More

$1575 USD in 30 days
(2 Reviews)
1.1
athminteam

Hi, This is Vipin. I have 6+ years of experience in mobile app development and has expertise in Android, iOS and Ionic framework. I have gone through your project description and would like to work on your project an More

$1375 USD in 7 days
(1 Review)
0.6
BrancoSoft

Hi There, I am writing in response to your post for "Xamarin Voice/Text Chat App (Android, IOS) - Phase one."After carefully reviewing the description I feel that I am a suitable match for the job. I lead a Team of P More

$1375 USD in 35 days
(0 Reviews)
0.0
osiyatech2008

I ALREADY HAVE DEVELOPED A SIMILAR APP and I have the source code (owned by me). I can easily carry out required customizations and quickly build a chat application for internal use of your company. I have expertise in More

$1375 USD in 7 days
(0 Reviews)
0.0