Icon and Image Sizes iOS 7

Description	Size for iPhone 5 and iPod touch (high resolution)	Size for iPhone and iPod touch (high resolution)	Size for iPad (high resolution)	Size for iPad 2 and iPad mini (standard resolution)
App icon (required for all apps)	120 x 120	120 x 120	152 x 152	76 x 76
App icon for the App Store (required for all apps)	1024 x 1024	1024 x 1024	1024 x 1024	1024 x 1024
Launch image (required for all apps)	640 x 1136	640 x 960	1536 x 2048 (portrait) 2048 x 1536 (landscape)	768 x 1024 (portrait) 1024 x 768 (landscape)
Spotlight search results icon (recommended)	80 x 80	80 x 80	80 x 80	40 x 40
Settings icon (recommended)	58 x 58	58 x 58	58 x 58	29 x 29
Toolbar and navigation bar icon (optional)	About 44 x 44	About 44 x 44	About 44 x 44	About 22 x 22
Tab bar icon (optional)	About 50 x 50 (maximum: 96 x 64)	About 50 x 50 (maximum: 96 x 64)	About 50 x 50 (maximum: 96 x 64)	About 25 x 25 (maximum: 48 x 32)
Default Newsstand cover icon for the App Store (required for Newsstand apps)	At least 512 pixels on the longest edge	At least 512 pixels on the longest edge	At least 512 pixels on the longest edge	At least 256 pixels on the longest edge
Web clip icon (recommended for web apps and websites)	120 x 120	120 x 120	152 x 152	76 x 76

Designing app for iOS 7

Deference, clarity and depth are the main themes for iOS 7 development. Focus on core functionalities and content and keep the design simple.

Provide clarity:

1. Use plenty of negative space, negative space make important content more noticeable. 
2. Let color simplify the UI.
3. Ensure legibility by using the system fonts. 
4. Embrace borderless buttons.   

Content is at the heart of iOS 7: 

1. Take advantage of the whole screen, let content extend to the edges.
2. Reconsider visual indicators of physicality and realism, avoid heavy UI elements, keep it simple, focus on content and let the UI have the supporting role. 
3. Let translucent UI elements hint at the content behind them.

REQUEST_DENIED when using the Google Places API

<PlaceSearchResponse>
  <status>REQUEST_DENIED</status>
</PlaceSearchResponse>

I had this problem for a while, and could not find any solution for it on the web. But I did manage to sort it out, if you need a quick fix do the following:

In google api console when creating your key, I chose the server and left the field blank so it allows any IP. Now my api key works perfectly fine.

Key for server apps (with IP locking)

API key:	your api key
IPs:	Any IP allowed
Activated on:	date
Activated by:	you

I did the same for my ios key now it works on all of my ios apps.