App Store Download Preference

Dear all, Im Kailin Zhou, a master student at the University of Birmingham. I am conducting a study as a part of my dissertation work. The questionnaire is going to investigate the preference of iPhone users when downloading Apps. I would really appreciate if you could assist me in my work by participating in my study. It will take 5 minutes and will involve answering a few questions. Your participation is voluntary and you may withdraw from the study at any time and for any reason. The collected data will be treated with full confidentiality and your anonymity is protected. In fact, I will not ask any questions regarding your personal information. I will inform you about the summary of the results, if you are interested, after the research is conducted. I would be grateful if you would select the "I agree" button to verify that I have read you the mentioned subjects.
*1. What is your gender?
*2. What's your age?
*3. Where are you from?
*4. Are/ Were you a iOS device user? (iPhone, iPad and iPod touch)
*5. Do you have Apple ID?
*6. I have Apple ID in....

The number of Apple ID I have in ....(countries)
0
1
2
3
4
5
More than 5
China
USA
UK
Japan
Australia/ Canada
Europe countries
Other
*7. When do you know about Apple App store?
*8. Do you use App store at the first use of iPhone, iPad or iPod touch?
*9. How long does it take to actually use App store after you first use of iOS device?
*10. Choose from following factors may affect you when you want to download an App
App Store rating
Other users reviews
Recommendations from friends or family
Price
The developers brand credibility
Ranking in App store
Randomly (I spend time looking through all of the applications available to discover them on my own)
Other
*11. Where and when do you consult App store?
On the bed
On the move
On the toilet
When watching TV
Other
*12. How often will you have a look of Top Charts in App Store?
*13. Which App Categories Top Charts are you interested in?
Books
Business
Catalogs
Education
Entertainment
Finance
Food and Drink
Games
Health and Fitness
Kids
Lifestyles
Medical
Music
Navigation
News
Newsstand
Photo and Video
Productivity
Reference
Social Networking
Sports
Travel
Utilities
Weather
*14. When you are looking at the top charts, you will go for....?
Paid Top Chart
Free Top Chart
Top Grossing Chart
*15. Generally how much would you be ready to pay for a app?
*16. What's your attitude to security issue about different type of apps?
I think it is comparably safe. I can reject it access to my personal information.
I think it should be safe because I trust the iOS platform.
I didn't realise the security issue
I think it is insecure.
It may reveal my personal information.
Not applicable
Paid app
Free trail app for limited use
Free app with in-app purchase
Free app
*17. App Store download preference
1 ( Definitely I do )
2
3
4
5 ( I never rate it )
Do you rate the app in App store after first use?
Do you write a review in App store after first use?
*18. Do you know app-ranking manipulation?
*19. Do you still trust the Top chart? and you are willing to download top chart app to try?