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iOS product

Added March 2, 2021

GrandBastard - Chess Puzzles and Chess Analysis Extension for Firefox and Chrome.

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About the product

GrandBastard offers 200K checkmate puzzles for chess lovers who want to practice their endgame. Install our Chrome and Firefox extension to get game hints while you are playing on chess.com or lichess.
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  • Back in the X and Threads rotation: GrandBastard gets posted again instead of once.
  • A promoted slot on the AppRater homepage, carrying a Promoted badge.
  • A direct link to GrandBastard from a DR45 site (Ahrefs Domain Rating), with no redirect in between.
  • A labelled spot in the weekly email to AppRater subscribers, one promoted app per issue.
  • Stays on the first screen however old the listing is, while new submissions push everything else down.

Monthly promotion

$14USD per month

Card, Apple Pay and more, through Whop. Starts straight away.

  • Cancel any time from the Whop account you paid with, or email [email protected] and we will do it.
  • The promotion starts straight away, no waiting on us.
  • Whop handles the checkout. We never see your card.

Questions first? Email [email protected].

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