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Zoitra Technologies ships age verification, developer extensions, and browser utilities you can use in production today. This site also hosts free EV calculators, long-form guides, and news about Zoitrix and ZoiGent, our upcoming AI platforms for coding and autonomous agents.
Start with the product overview, open the Tools page for calculators, or read guides on the blog and Insights hub. Contact us for partnerships, press, and product questions.
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Calculate return on investment from cost and gain over any time period. See the ROI percentage and annualized return instantly.
Enter the cost of an investment and the gain it returned, plus the time period, to see the return on investment as a percentage and the annualized return. Compare projects, marketing spend, or equipment purchases on the same basis.