The company's most notable product is the Keymap Pro Advanced Sampled Instruments Editor which it describes as "photoshop for sampled instruments."
However, the company which pushes four Mac-centric products in total, is still in its early stages and only brought in income of about £20,000 ($32,000) last year.
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If the reports are true, it may be that Apple plans to integrate some of the features into its own popular pieces of editing software.
Beyond that, it may be an acqui-hire, meaning Apple has taken a fancy to one or more of Redmatica's workforce.
Apple is yet to confirm the purchase.