In April, Apple has increased their usage share in all four major devices they produce, according to the latest market share survey from NetMarketShare (http://www.netmarketshare.com). The Mac OS, iPhone, iPad and iPod touch all gained share in the last month. On three devices, Apple has reached an all-time high usage share.

According to the report, among operating systems, Mac OS X had 5.40% of the global market share in April compared to 5.25% in March (that’s global market share; in the US it’s almost 10%) — the highest percentage ever. Windows remains dominant with 89.91% as of April. That’s down from 89.58% in March.

When it comes to browsers, Safari had 7.15% in April compared to 6.61% in March, while Internet Explorer had 55.11% Firefox had 21.63% and Chrome had 11.94%. That compares to, respectively, March percentages of 55.92%, 21.80% and 11.57%, respectively, for the browsers.

The iOS’s market share also rose, according to NetMarketShare. It had 2.24% of the global market share in April compared to 1.87% in March. That’s its highest percentage ever. Of the 2.24%, the iPhone accounted for 1.23%, the iPad .83% and the iPod touch .19%. If you combine the Mac OS X and iOS operating systems Apple would have 7.64%.

NetMarketShares’ monthly surveys don’t measure market share in terms of computer systems sold. Instead they sample data from visitors to some 40,000 web sites operated by their clients. And note that NetMarketShare’s numbers don’t equate to sales.

— Dennis Sellers