Go back to the 70’s and surprise your friends with this recreation of Chip-8, and old machine back from 1977.

Together with several public domain games you will be able to commemorate the old school days of computing.

http://appshopper.com/entertainment/chip-8-emulator

Clicker is an easy to use tally counter, which mimics the functionality of the classic hand held mechanical tally counter. Use Clicker to keep a count of everything from the number of beers you’ve been drinking to inventories. Or people. Or just about anything.

The application saves your current count when you close the application, which lets you restart the application at a later time and continue your count from where you left off.

Apart from adding to your tally, Clicker also lets you subtract from, and reset, the count.

http://appshopper.com/utilities/clicker-tally-counter

Train your mental arithmetic ability with MindCalc!

You get an equation where the result is known and an arithmetic operator. Now you need to pick two numbers out of 9 to solve this equation. The faster you solve your equation, the more points you gain. But if you make a mistake you need to start all over – so be careful!

http://appshopper.com/education/mindcalc

The Kosen studio-haus, offering lifelike creations of distinction, presents a promotional puzzle, The Tumbler, for the iPhone and iPod Touch.

The Tumbler features favorite Koesen(R) pals in a puzzle format that is different from most any other puzzle you’ve put together before. The pieces are 3-D cubes, and using the accelerometer, tilt your device to turn, bounce, rotate, and slide the pieces into place. Each cube has the same image on all six sides.

Choose from as few as four pieces, and from six different scenes.

http://appshopper.com/games/kosen-tumbler-puzzle

Joke database in german and english with over 10’000 jokes! Most of them are in german.

http://appshopper.com/entertainment/humors-jokes

Bear St. presents the Wide Wild World of GUND (R), and now for the iPhone and iPod Touch, a promotional puzzle, The Tumbler.

The Tumbler features favorite GUND (R) pals in a puzzle format that is different from most any other puzzle you’ve put together before. The pieces are 3-D cubes, and using the accelerometer, tilt your device to turn, bounce, rotate, and slide the pieces into place. Each cube has the same image on all sides.

Choose from as few as four pieces, and from six scenes.

http://appshopper.com/games/bear-st-tumbler-puzzle

The Particle Swarm Optimization (PSO) algorithm is classified as a population-based stochastic optimization technique. A set of potential solutions are evolved to approach an approximate solution (or set of solutions) for a problem. With PSO being an optimization strategy, the aim is to discover the global optimum that satisfies the constraints of the fitness criteria defined in the given search space for the problem. This application demonstrates how the Particle Swarm Optimization (PSO) algorithm works through the use of 2D visualization. By selecting and moving the large orange sphere in the application, blue particles will continually swarm towards it. Users can also alter the behaviour of the swarm by specifying the global best (gBest), personal best (pBest), and delta-time parameters and view their effects.

http://appshopper.com/education/pso

Do you have perfect pitch? Here’s a way to both test your ear and train it at the same time. Pitch Hero plays you a note; you listen and then hit the corresponding piano key. If you don’t get it right on your first attempt, you can peck around on the vintage grand piano until you’re correct. You can measure your progress through a final score that measures both your time and the number of errors you make. Pitch Hero will sharpen your skills at both note and interval recognition.

FEATURES:
– Musical ear training using real grand piano note samples.
– A beautiful vintage looking wood, brass and Bakelite interface.
– A scoring system to monitor your progress.

http://appshopper.com/music/pitch-hero

View your VoodooPad documents on the go, by syncing them to your iPhone or iPod Touch with VP Reader.

http://appshopper.com/productivity/vp-reader

Need to determine how much pain a friend is in? Then gauge their moans and groans against our 54 excruciating sounds of pain.

Need to express a slight pain or minor displeasure? Tap one of the top three rows. In slightly more pain? Tap one of the middle three rows. Experiencing pain the likes of which you have never known before? Tap one of the bottom three rows.

Highly accurate pain recordings combined with sophisticated medical diagrams make this application both useful and entertaining.

Features
– 54 pain sounds.
– Tap to play a single sound.
– Drag your finger to play multiple sounds.
– Shake device for a random sound.

http://appshopper.com/utilities/sounds-of-pain