Build the perfect city by strategically placing buildings on a grid in ColePowered’s logic puzzle game, MegaCity HD. We also have a digital scrapbook app for those precious baby years, and a virtual analog synthesizer.

All app prices are subject to change at any time and without notice regardless of stated free duration. Price changes are solely under the control of the developers.

iPhone:

3D Rollercoaster Rush ($2.99 → Free, 6.8 MB): Get a rush of adrenaline by controlling carts on high-speed rollercoaster tracks in this arcade game. You’re in complete control of the speed of your cart, allowing you to catch huge air and perform stunts. Try not to get too carried away, otherwise you’ll wind up losing carts. The game includes 40 tracks, and two control options.

3D Rollercoaster Rush is available for free for a limited time. It has a 4-star rating with a total of 4142 ratings.

Pinch n Pop! ($0.99 → Free, 2.3 MB): Push, flick, and pinch together colorful self-replicating creatures known as Squirms to keep their population under control in this matching game. You can earn combo points by combining multiple Squirms of the same color. Just be sure not to let the screen fill up entirely with Squirms! The game includes three difficulty levels, power-ups, and online leaderboards.

Pinch n Pop! is available for free for a limited time. It has a 2.5-star rating with a total of 1473 ratings.

SunrizerXS synth ($4.99 → Free, 4.3 MB): A virtual analog synthesizer that’s absolutely loaded with features. It includes SuperSaw emulation, two independent filters, the ability to morph up to 30 parameters in a sound, MIDI support, oscillators, multiple effects, more than 200 presets, customizable piano size, and the ability to record and share your work.

SunrizerXS synth is available for free today only (08/10). It has a 5-star rating with a total of 79 ratings.

Tapsteroids ($0.99 → Free, 18.7 MB): Protect your fleet of space ships from asteroids in this arcade game. You’re able to launch an endless stream of missiles at the approaching asteroids just by tapping on them. Collect ammunition for your backup arsenal to ensure the safety of your fleet and your station. The game also includes three difficulty levels, four weapon types, and achievements and leaderboards via Game Center.

Tapsteroids is available for free for a limited time. It has a 4-star rating with a total of 59 ratings.

Universal:

NxtApp 4 Kids ($1.99 → Free, 7.3 MB): An educational game that will help your child practice basic math. Each of the five stages requires your child to complete sequences as quickly as possible by applying different math skills. If they correctly complete a sequence they will receive a dancing gold star. If they input an incorrect number, however, they’ll still be able to see the correct answer. The game also includes leaderboards via Game Center.

NxtApp 4 Kids is available for free for a limited time. It has a 4.5-star rating with a total of 55 ratings.

Megacity HD ($0.99 → Free, 18.3 MB): A delightfully challenging logic puzzle game that requires you to build a MegaCity. The goal of the game is to place buildings within the grid in order to achieve the point value at the top of the screen. Some buildings add points to the grid’s squares while others subtract them. Keep an eye on which building is next on your list and strategically place them to keep the screen clear. The game includes two modes, 10 unlockable buildings, and achievements and leaderboards via Game Center.

Megacity HD is available for free for a limited time. It has a 4.5-star rating with a total of 54 ratings.

The Love Tangram ($0.99 → Free, 13.7 MB): A tangram-style puzzle game with a Saint Valentine theme. Just drag pieces from the left side of the screen onto the game board on the right to complete the image. Pieces can be rotated 360 degrees, and they will snap right into place once you release your finger. The game includes loads of puzzles, three difficulty levels, hints, and support for multiple users.

The Love Tangram is available for free for a limited time. It has a 4-star rating with a total of 101 ratings.

Rat On A Scooter XL ($0.99 → Free, 7.3 MB): A platformer and distance game wrapped into one neat package. Tap on the screen to cause your Rat On A Scooter to jump a short distance, and tap and hold to make him jump farther. You can also grind your scooter across platforms to earn bonus points. The game includes four modes, and achievements and leaderboards via Game Center.

Rat On A Scooter XL is available for free for a limited time. It has a 3.5-star rating with a total of 15893 ratings.

Paracute ($0.99 → Free, 7.6 MB): This casual arcade game requires you to navigate a teddy bear through caves in order to collect hearts for his teddy bear girlfriend. You receive more points for collecting larger hearts, but you must try to avoid touching walls at all costs, otherwise it’s game over. The game includes both tilt and touch controls, 40 caves to explore, and achievements and leaderboards via Game Center.

Paracute is available for free for a limited time. It has a 3.5-star rating with a total of 5247 ratings.

Monkey Flight ($0.99 → Free, 4.9 MB): Yet another great casual arcade game from Donut Games. You’re goal is to sling monkeys through the air to collect as much fruit as possible. Tap and hold to engage your monkey launcher, and release your finger at just the right moment to fire him through the air. Your monkey will go skipping across the environment collecting fruit, and you can extend his air time by tapping on the screen to pass some gas. The game includes three modes, 60 challenges, and achievements and leaderboards via Game Center.

Monkey Flight is available for free for a limited time. It has a 3.5-star rating with a total of 41755 ratings.

iPad:

Scrap It: Baby Years HD ($0.99 → Free, 220.1 MB): Add a special touch to your precious baby photos with this digital scrapbook app. It includes an staggering amount of stickers, paper styles, ribbons, letters and numbers, and word art items to choose from. Each item can be moved, resized, and rotated via multitouch controls. You can also add photos from your own library and apply a variety of effects to them, and add your own custom text. The app also includes a layer manager, the ability to view multiple scrap pages as a slideshow, and the ability to share your creations via Facebook, Twitter, Tumblr, or email.

Scrap It: Baby Years HD is available for free for a limited time. It has a 5-star rating with a total of 6 ratings.

That concludes today’s issue of Apps Gone Free. If you like staying on top of these daily deals, don’t forget to check out our free AppsGoneFree app. It provides all the deals each day, and even an archive of past deals that are still active.

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:

  • It must have at least a three-star average rating at the time it goes free.
  • The app must not have been free numerous times (3+) over the last six months.
  • The free version of your app must not include ads.

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 and for how long you intend to offer the app for free, and anything else you would like to share. We will take it from there.