Astracia Signal Score
Compare with similar →Not enough public signals for a score yet. Missing signals are not a sign of weakness.
Open source Open source alternatives to CalcTide →
About the startup
CalcTide is a free online calculator site designed to provide fast, trustworthy answers. It covers more than 100 tools across finance (mortgage, refinance break-even, 401k, loan, compound interest), health and fitness (BMI, TDEE, calorie, macro), math and education, time and date, construction and home (square footage, concrete, paint), and unit conversions.
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Explore expertise in Education & Research
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ExplainingComputersWeekly videos on computing and related topics. |
Max Rohowsky, Ph.D.Obsessed with SaaS customer acquisition and building leverage • Bootstrapping crosspublish.com • Previously corp. |
Renate SamsonLongtime policy wonk, consultant, researcher and speaker about the impact of data driven tech and AI. |
Media about Education & Research
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Well Sourced by Kelly JensenNewsletter |
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Founder stories from Education & Research startups
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Drip's Leadpages deal was a 13-month acquisition, not a revenue chartRob Walling used Startups for the Rest of Us episode 298 to describe Drip's sale to Leadpages as a long strategic acquisition, and he kept purchase price and recurring revenue off the record. |
Pat Flynn's first product month was $7,906.55, a year and a half after the study blogPat Flynn says he was laid off as an architect in 2008, then sold a LEED-exam ebook into traffic he had already built; October's $7,906.55 was the first month with his own product, not the first month the site existed. |
Tiago Forte scaled Building a Second Brain as live cohorts, then stopped teaching them himselfA 2022 Disco case study describes Tiago Forte taking Building a Second Brain to a fifteenth cohort and thousands of learners by iterating live, then his January 2023 post says he taught 16 cohorts and would not teach the |
Ship 30 for 30 started as a $50 Slack challenge, not a later AI newsletterDickie Bush says Ship 30 for 30 began in November 2020 when he asked about 500 followers to write daily, had 50 people in Slack six days later, and later wrote with Nicolas Cole that they had taught 10,000-plus students |
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