Here are the latest iPhone/iPod touch/iPod/iPad apps. You can find ’em at the Apple App Store (http://www.itunes.com/appstore/).

Just in time for the 4th of July, Multieducator has released an iOS app to educate folks on American history. Revolutionary War (US$4.99) contains: over 100 drawings and illustrations (all of which you can zoom into), one hour of multimedia presentations, over 40 maps; and dozens of first-hand accounts.

Bent Castle Software has announced an iPad app version of the classic tabletop card game, Numbers League. The $4.99 engages kids in the challenge of ridding Infinity City of villains, and in the process, hones their mathematical superpowers. Players assemble a team of heroes and use devices, along with their own math skills, to capture villains. Up to four players can play Numbers League on a single iPad making it a great family game.

Dan Russell-Pinson has introduced Presidents vs. Aliens 1.0 for iPhone and iPad devices. The $1.99 app offers a blend of education and casual, arcade-style gaming. The goal of Presidents vs. Aliens is to correctly answer questions about the 44 presidents of the United States and then fling the presidents at the aliens to eliminate them. When the player completes a level, they win a randomly chosen president which is placed on their personalized screen. Players can customize the difficulty of the game by choosing which types of questions they are quizzed on.

Nanjing Imohoo Information Technology has launched War Grimoire HD 1.0, a tower defense game that takes players through an epic adventure unfolding in remote medieval times. The $2.99 game has 30 different levels spread across various environments and also offers a set of interesting mini games.

Zoo Entertainment has unveiled Kona’s Crate, a physics-based platform racer.  The game takes place in a magical, hidden world where players must carefully deliver a crate of stars to Kona, the mystic chief. The crate sits on a jet-powered platform that players must navigate to complete the delivery safely in time. The iPhone/iPod touch version costs $2.99; the iPad version is $4.99.

Xinsight has debuted Cosmos Timer 1.0, a $0.99 productivity tool for iOS devices. It can track events with both flexible and hard due dates. There’s an alert when the timer expires, but it continues to count up from the due date to show how much time has passed.

Holderness Media has rolled out Udu Drum 1.0 for the iPad. The $0.99 features an interface with dynamically layered samples and playability, Udu Drum brings the tones of the Nigerian udu to iOS devices.

Calorie Counter: diets & activities 1.0 is a new, free iPhone/iPad app designed to help users reach their fitness goals through better organization and planning of diets and activities. It works both as a scheduling and monitoring app.

SGN has served up its first game since being acquired by MindJolt in April. Beginning today, Mini Café for the iPhone, iPad and iPod touch is free to download. In the app, you can design and decorate a unique restaurant that “serves tantalizing international flavors matched to exotic decor.”

Gameloft, has rolled out BackStab for the iPhone, iPod touch and iPad. In the $6.99 game, you take on the role of Henry Blake, a broken man whose life was stripped away, and help in his quest for justice and revenge. Climb, jump and sneak your way through diverse settings to reach your target and strike down adversaries.

Phoenix Mobile is offering Flower Board 1.0 for iOS. In the $0.99 puzzle game, you group six or more balls together to dismiss them and to increase your score. New balls are added after each move and you will need to keep the board from filling up. There are also special balls to help you clear the board. The goal is to score as high as possible.