ASX-listed pharmacy software vendor Corum has reported a 15 per cent drop in revenue in its half-yearly results, an expected outcome as consolidation within the pharmacy sector continues and major customer Chemist Warehouse transitions from Corum's flagship LOTS Dispense to its own in-house system.

While revenue was down the company's profit was higher than this time last year. Overall revenue was $6.38 million with a net profit after tax of $223,000.