Custom Split tracks your split or lap times and saves your history so that you can try to improve on your times for future timings.  The splits can be laps or landmarks while jogging or milestones when playing a game.

On the main screen, your current split times are displayed, along with the difference or delta from your current time and the best time that you have saved.

When you press the Start button, the timing will begin as shown in the image below:

Every time you press the Split button a new split will be created if one doesn't already exist or it will start timing the next split in the list.

The Save button, saves your current times.  If any of your current times are better than your best times, then the best times will be updated.

The Stop button will stop the timer.  Pressing the Start button will resume the timer.  If you press the Reset button, your current times are reset.

The Clear button allows you to edit your best times or to clear out your best times.

The Clear button on the Edit Times screen will reset all your best time splits to 0.

The Edit button allows to you update, delete or add new splits.

At the bottom of the main screen a running total of your current time is displayed as well as a delta from the best total time that you saved.

Particle Trainer

Particle Trainer is a new iOS application that can be used to test your knowledge of the periodic table and the standard model of particle physics.  In addition it can be used as a reference to look up information about elements or about sub-atomic particles.

The Search screen allows you to bring up any element in the periodic table or particle in the standard model to view detailed information.

Or you can try the quiz to build up your knowledge.

There are several different quiz types you can try.  Also, the quiz can be customized.  For instance, you can limit the range of the elements you would like to be quizzed on.

Physics and Math Assistant

Physics and Math Assistant is an iOS application which assists in solving physics and math problems.  The application consists of equations and formulas useful in a number of different areas in math and physics.  The categories include Classical Mechanics, Special Relativity, Quantum Mechanics, and general Math.  Categories can be enables/disabled in the Options screen.  Also, the precision is customizable.  When entering values always remember to be consistent in units between variables.  If the equation uses any constants, be sure to use SI units.

When you launch the application, you get a list of equations/formulas by category:

Once you select something, the equation page is presented where you can enter values for all required variables.   Once all required variables are entered, tap Solve to solve the equation or Clear to clear the inputs:

On the Options page, you can enable/disable categories and also specify the precision you would like to see in the results: