BigMagnify 3 - A magnifier app with light, manual focus and filters

Hi AppleVis users, I just released an major update to my magnifier app that I hope you'll find useful.

BigMagnify is an app that turns your iPhone or iPad into a magnifying glass. You can zoom in all the way up to 8x magnification using the simple UI as well as using simple gestures. A few other useful features include a built-in adjustable light, multiple focus modes (including manual focus), and sharing of magnified images.

A few features that set BigMagnify apart from the rest of the magnifier apps are the filters (invert, sharpen and mono) and video stablization. Both greatly enhance readability of text, especially at high zoom levels.

I know BigMagnify is not perfect, so I'm reaching out to the AppleVis community not only to get the word out about my app, but also to get feedback on how I can improve it. Are there any other features that would be helpful? Are there any other filters that would be useful to have? I would love to hear any of your thoughts, I look forward to hearing from you!

Here are some promo code links for you to try out the new version:
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If the promo codes are all taken, feel free to e-mail me directly at contact@bigmagnifyapp.com. You can also download the free ad-supported version at https://itunes.apple.com/us/app/bigmagnify-free/id393247466?mt=8&uo=4

I looking forward to hearing from you all!

Dave Cheng
Web: http://www.bigmagnifyapp.com
E-mail: contact@bigmagnifyapp.com