Category Archives: Introduction

iOS Development With Swift Part 7

This is part 7 and final part of the swift iOS Programming tutorials series. The first part of the series is here and the previous part of the series that is tutorial # 6 is here. In this tutorial we will finish off the app by adding two more buttons in audio playback to change the pitch of the recorded audio to make your voice sound like chipmunk and darth vader. We will learn about audio engine and some new classes in audio engine which help us to change pitch. Finally we will finish off this series by learning on how to run the app on physical device.

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About Myself & Company

Hi my name is Jawad Rashid. I am currently working in my own company nDataConsulting as a Data Scientist which deals in mainly Big Data technologies, data science, data analysis and visualization. We also develop web applications on the latest technologies both in open source and microsoft technologies. We work on backend MySql, NoSql(Mongo etc), Graph Databases(Neo4J etc) and more,  Also, we work on mobile apps native(iOS, Android, Microsoft) and hybrid.

I have done my bachelors and master in Computer Science from Pakistan top universities Fast-NU and LUMS. I got more interested in data science field for last 2 years and i read up on required material needed to do data science from MOOC courses on edX, coursera and more from top Universities in the world like Stanford, MIT etc. I have gained a lot of experience in statisical inference, tools like Weka, R and more and  data visualization in d3.js, R charts etc.

I have also interest in mobile game development and currently i devote my free time to making my own strategy/puzzle game on iOS devices initially.

You can view my work on and my company site is You can view my profile on linked on My twitter handle is @jawadrashid and facebook profile is