Near the start of this year, software developer Kosta Eleftheriou began reporting on blatantly fraudulent apps on the App Store, which year after year have been able to generate large sums of money by tricking users into paying for expensive subscriptions. Apple removed some of the apps he pointed out, but left other apps from the same developer in the store.

Now Eleftheriou, through the company KPAW LLC, has sued Apple for competition violations, The Verge reports.

The lawsuit has been filed in the Supreme Court of Santa Clara, a local court in California. In it, Kosta Eleftheriou accuses Apple of false marketing, breach of contract and fraud.

The suit makes a number of allegations:

  1. That Apple tried to buy Eleftheriou's app FlickType and, when he did not want to sell, took revenge by preventing him from selling it on the App Store.
  2. That the technology in FlickType was used by a long list of other third-party apps that were posted to the App Store without hindrance, suggesting that FlickType itself was rejected on spurious grounds.
  3. That Apple has not kept its promises to keep the App Store free of fraud and counterfeiting. According to Eleftheriou, clones of FlickType continue to sell in the store and bring in money for Apple.

Apple's governance of the App Store has come under the spotlight in the past year. It's still embroiled in a long-running dispute with Epic Games, which tried to implement a discounted direct-payment system in Fortnite, and Ubisoft sued last year over what it alleged was a copy of Rainbow Six being sold through Apple's platform.

This article originally appeared on Macworld Sweden. Translation by David Price.