Improve the design of my app's home screen

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This customer received 44 app designs from 12 designers. They chose this app design from eMango as the winning design.
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App Design Brief
The design should be the same basic layout as the current home screen, with the following improvements:
- Top bar should be a better color (see app logo for app colors), with font and icons/title that better reflect the app icon and look more professional
- Fonts should be consistent and improved
- Should be more clear that only the first workout challenge is unlocked. (should be obvious the user has access to 1st challenge, and also obvious that the others are locked/must be paid for)
- Show price of locked workouts ($2.99 each)
- Re-do button on the bottom to "unlock all challenges for $4.99". Make it attractive, colorful, noticeable, that the user sees it and understands the value they get from it and wants to buy it.
App is available here if you want to try and/or get more screenshots: https://itunes.apple.com/us/app/fit30-at-home-workouts-30/id986580178?mt=8
Winner of the contest will also be hired to re-design 2 other screens on the app if you are interested :)
Font styles to use
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.