Apple adjusted the prices on its international iTunes App Store yesterday resulting in increases in the cost of some software and music in the UK and elsewhere.

The pricing hike (and relative fall in other locations such as Australia) was taken by Apple to bring prices in line with current exchange rates. Some online commentators suggest that the move means that Apple will be adjusting international pricing on its soon to be announced hardware releases.

The adjustments took place during downtime of the App Store and have resulted in price increases across the board for UK consumers, as well as those in Mexico and Norway. Euro prices don't appear to have changed. For the lowest ($0.99 in the US) tier, the UK price of £0.59 has risen to £0.69 ?(in Australia this was a drop of AU$1.19 to AU$0.99). ?

Content on the next tier, which was pegged at £1.19, is now £1.49, while the tier above that rises to £1.99 from £1.79.

While this affects the 'cheap apps' by a small amount, it's the products on higher tiers that see the biggest hit on the wallet. A product selling for £17.99 for example, is now £20.99, while content priced at £23.99 is now £27.99. Final Cut Pro X is priced at £20 more now than the £179 it was selling for. However prices at the very highest tier seem to have fallen, with a £699 price point dropping to £599.

Spare a thought however for Australia and Switzerland. MacStories reported that until yesterday's rebalancing act there was an 81% surcharge for an Australian buying the same song as an American while those in Switzerland had to pay more than double at a 105% surcharge.

So while UK customers won't be happy, it's not  surprising that this has happened, particularly given that the conversion rate used by Apple hasn't been adjusted for some time and we've had fluctuating currencies across the world.

However developers appear not to have been alerted to the price change by Apple. Kosta Rozen of Apparent Soft first heard of the rebalancing when we contacted the company for a comment. However Rozen added: "I don't think the price increases in UK will affect us much as most of our revenue comes from US and Europe, so the UK part is only around 6%."

Others welcome the rebalancing of worldwide pricing, for example RapidWeaver developer Realmac Software. "Our own online store uses daily-fluctuating exchange rates, and Apple's previous pricing jarred quite significantly as a result of the differing exchange rates," said the company's Nik Fletcher. "Whilst we're looking to go Mac App Store only for more products in the longer term, this change is very much welcome in the meantime as we obviously want to offer as equal pricing to customers, no matter which way they choose to buy our apps!"

Another developer informed Macworld that his company had received a message earlier this week warning about the maintenance downtime and that it would impact price changes and sales in some countries. The developer, who wished to remain anonymous, didn't see the UK rise as a big deal because his company only has about 5% of sales in the UK. However he added that it would have been a different matter if Apple lowered the 0.79 euros price point to 0.69 euros, to reflect the USD/EUR exchange rate.

"The Euro sales are much bigger," he said. "Maybe they should invent the ASD (App Store Dollar) and use the real exchange rate to convert to each country/region money. It'd be probably better for most users, they'll buy more, so it'd be better for developers."

Some would argue that Apple needs to update its prices more often. Another developer, who also chose to remain anonymous, claims the price rises/falls around the world prove that Apple adjusted it prices yesterday 'based on exchange rates and not some other reason'.

"App Store is an international market that has developers from all over the world," he added. "For a developer it is easier to set one default price for a product and have it automatically adjusted for different regions. And the default currency was chosen to be the US dollar, which I totally understand."

"I think Apple acted here pretty fairly," he continued. "They might have contacted developers to let them know about planned price changes, but I doubt that would have any major effect on the software price increase for UK customers, or drop in some price in other countries. We were not informed about these changes."