Unconfirmed reports suggest that the number of apps available on Apple’s App Store surpassed 300,000 late last week – just a few weeks after Apple announced it had reached the 250,000 milestone in early September. While Apple infrequently releases numbers, there are several third-party analytic firms that track the tally by monitoring new additions. One such firm – Mobclix – reported the 300,000 figure last week.