iPhone And iPad Apps Gone Free: SpyPic, quiQR, Moto X Mayhem For iPad, And More

Today's AGF list includes an app that allows you to snap pictures ninja-style, a QR reading and creating app, a motorcycle racing game for iPad, and much more. Disclaimer: All prices are subject to change at any time and without notice regardless of stated free duration. iPhone: Understanding Photoshop - Quick Fixes ($.99 -> Free): Teaches you how to solve common problems with color and tone in Photoshop. It includes 17 training videos, viewable screenshots, hands-on files to download to your computer, interactive quizzes, and the ability to communicate with Rich himself on Twitter. Understanding Photoshop is available for free until October 31st. It has a three-and-a-half-star rating and a total of 81 ratings. SpyPic ($.99 -> Free): Allows you to take pictures without anyone noticing. Mute your phone before launching the app, and then tap the screen to take a picture. It has a transparent image over the top, which can be toggled by swiping left to right on the screen. You can also change the transparency by swiping up and down on the screen. SpyPic is available for free until October 31st. It has a four-star rating and a total of eight ratings. quiQR - QR code reader and QR code creator ($1.99 -> Free): Allows you to scan QR codes in real-time, and create many types of QR codes yourself from within the app. It also allows you to check in on Foursquare via a QR code. Foursquare QR codes can be created on the developer's website. quiQR is available for free until November 1st. It has a three-and-a-half-star rating and a total of 46 ratings. Klotski Pro ($.99 -> Free): The goal of the game is to get the king piece through the passage at the bottom of the screen be rearranging all of the other pieces. The game includes 100 puzzles, five difficulty levels, unlimited undo, and the ability to create your own puzzles. Klotski Pro is available for free until November 2nd. It has a four-and-a-half-star rating and a total of five ratings. Gravitate! ($.99 -> Free): Direct the ball to the exit by drawing paths on the screen and choosing a direction for the ball to follow, but make sure to avoid bombs entirely. The game features 45 levels, five tutorial levels, and medals to obtain for each level. Gravitate! is available for free for a limited time. It has a three-and-a-half-star rating and a total of 44 ratings. Universal: iEMF ($.99 -> Free): Is able to detect magnetic fields by utilizing your iDevice's built-in magnetometer. It also features a simulation mode for iPhone 3G users and iPod touch users since those devices lack a magnetometer. iEMF is available for free for a limited time. It has a three-and-a-half-star rating and a total of seven ratings. DoubleTake! ($1.99 -> Free): A techno-inspired matching game that features frantic gameplay. The game includes four modes of play, Retina graphics, and Game Center and OpenFeint integration. DoubleTake! is available for free today only (10/28). It has a three-and-a-half-star rating and a total of 14 ratings. My Music Stats ($.99 -> Free): Allows you to view stats and details regarding your iOS music collection and your listening habits. It features song sorting, detailed stats about each song, general stats, graphs, customization options, and the ability to share your information via Facebook. My Music Stats is available for free until October 30th. It has a three-star rating and a total of five ratings. iPad: Moto X Mayhem for iPad! ($2.99 -> Free): A 2D side-scrolling motorcycle racing game that allows you to jump and crash your way through a variety of courses. The game features tilt-based controls, ragdoll physics, online leaderboards, and more. Moto X Mayhem for iPad! is available for free today only (10/28). It has a four-star rating and a total of 12 ratings. Developers: If you are a developer who would like to get your app included in our “Apps Gone Free” daily lists, here’s our basic set of rules:

The app must be free for at least one whole day.
It must have at least a three-star rating at the time it goes free.
The app must not have been free numerous times (3+) over the last six months.

To submit an app, simply send a request to tyler@appadvice.com with the subject “Apps Gone Free.” Please include the name of the app, a link to it in the App Store, when you intend to offer the app for free and anything else you would like to share. We will take it from there.