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Added October 15, 2026

RSD Calculator

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About the product

RSD Calculator helps you instantly calculate relative standard deviation, coefficient of variation, mean, variance, and standard deviation with steps.
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For product owners

Promote RSD Calculator

Every listing gets one post to our X and Threads followers. It is seen once, then the traffic stops. Promotion keeps RSD Calculator in front of people instead.

  • Back in the X and Threads rotation: RSD Calculator gets posted again instead of once.
  • A promoted slot on the AppRater homepage, carrying a Promoted badge.
  • A direct link to RSD Calculator 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.

Quarterly promotion

$35USD every 3 months

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].

For ownersOwn RSD Calculator? You can add a deal, post a role or put the badge on your own site.

Add a deal →Post a role →Get the badge →

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