T*Premium

T*Premium, the paid version of 9-Toolbox, contains 15 tools combined into 1 app, unlike many other apps that provide them separately. It has a very polished interface and is easy to use. It allows you to hide tools you don't want to see and add new ones using the web apps tool.

The Tools Include:

> Clinometer
> Currency Converter
> Date Calculator
> Days Until(Countdown)
> Flashlight
> Holidays
> Loan Calculator
> Periodic Calculator
> Price Grab
> Random
> Sale Price
> System Info
> Tip Calculator
> Unit Converter
> Web Apps Links

Remember, you can hide tools you don't need and add new ones from web apps (using the web apps links tool).

The tools have a very polished interface and all the features you would expect from each tool, including some you wouldn't expect.

To see the app in action, watch the video:

As you can see, the app is definitely the best tool app on the App Store. I can't even think of any problems with it, besides the fact that it should have push notification for its "Days Until" and "Holidays" tool. The app is very useful app that should even free some homescreen space by replacing other apps.

App Store

Appshopper

Developer

MemoryInfo

Is you iDevice getting slow? Do you constantly have to restart it? Do your apps constantly crash? Never fear, MemoryInfo is here! MemoryInfo frees up the device's runtime memory. When you close an app, not all of the memory it was using is freed. MemoryInfo makes this memory usable. It basicly does the same thing as restarting, but much quicker.

The is split into 3 sections: memory info, process info, and battery info.

Memory info graphs the devices free, inactive, active, and wired memory on a graph. It also contains the "Free Memory" button that frees the devices memory.

Process info shows a scrollable list of the process currently running on the device. Pressing the "Free Memory" button closes certain unneeded processes.

Battery info shows the battery's status and level. It shows what percent of the battery is left.

This app is a necessity for any iPhone or iPod Touch user who has ever had an app crash (which is almost every one). This app is a deal at only $0.99. There is also another app like it (by the same developer) called System Activity Monitor. At 3x the price, I recommend MemoryInfo over System Activity Monitor.

Appstore

Appshopper

Developer

Math Solver

Have you ever wanted a scientific calculator that could not only perform arithmetic and simplify expressions, but also solve linear, quadratic, radical, and literal equations. Math Solver is the one.

Math solver is way more advanced than the iPhone's default calculator. Its main feature is solving for variables. My scientific calculator doesn't even do this, and trust me, it was more than $0.99.

First you type your equation, then press solve. It will tell you what the variables equal.

   

If you tap one of the answers, it will show you the steps to get it.

If you put in an equation without an equal sign, it will simplify it.

    

If you put in an expression, it will solve it too.

    

Math Solver supports radicals and square roots.

  

Tapping in the place where the equation is typed brings up the keyboard. You can use this to type the equation. You may even use other variables.

    

This even works for advanced equations.

    

This is a one of a kind app. You can't find its features on even some of the best calculators.
I would recommend downloading this if you have ever needed help on a math problem.

App Store

Developer