Quit twiddling your thumbs on your way to work. Instead, get busy with these mobile phone apps which promise to build your mental muscleIQ TEST
This free-todownload 4-star app uses timelimited questions to calculate your IQ rating. Keep practising and you'll soon develop a Schwarzenegger of a mental muscle.IQ BOOST
Tasks are based on the 'dual n-back' testing method, which improves your short-term memory. It has a range of visual game modes and progress reports.I LUV MOZART
Take advantage of the Mozart Effect on the move, with the top 10 pieces rated to raise your IQ. It also has a before-and-after test to gauge your improvement.
HIGH IQ TEST
Developed by psychologists, this app tests everything from math to visual memory, promising you'll "never do the same test twice".
IMPROVE YOUR IQ WITH PROVEN METHOD
This clumsily named app scores well. It combines visual puzzles with written logic to better brain fitness.