CalcTide
calculator.net
CalcSide
Omni Calculator
CalcWise
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CalcDocu
Haystack Analytics
LinearB
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Waydev
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CalcTide is a free online calculator site built for 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.
What sets it apart: every formula is unit-tested before it goes live, and each tool explains how the result is calculated rather than just printing a number. There is no signup, no paywall, and the site works on any device. Built by MavenUp.
Haystack is a real-time delivery analytics platform designed for engineering leaders like CTOs, VPs of Engineering, Directors of Software Engineering, and Engineering Managers. Haystack provides actionable insights that enable data-driven decision-making, aligning engineering performance with business objectives. Haystack platform integrates seamlessly with essential developer tools like GitHub and JIRA, offering a comprehensive view of team productivity and delivery efficiency.
Leading companies like AngelList, Shutterstock, Schneider Electric, and many more trust Haystack to optimize their development processes. By transforming historical Git data into objective insights, we help you identify bottlenecks and visualize trends, ensuring timely project delivery and sustained business growth. Our analytics dashboard allows you to monitor critical metrics such as cycle time, making it easier to spot inefficiencies before they escalate into costly delays.
Haystack helps engineering leaders to mitigate risks and improve workflow efficiency. With a unified view of the entire delivery lifecycle, you can track KPIs, compare performance trends, and make informed decisions that drive measurable outcomes. Our platform goes beyond merely measuring productivity; it equips you with the tools to foster continuous improvement and innovation within your teams.
Designed to scale with your organization, Haystack is the competitive advantage that data-driven engineering teams need to thrive. By leveraging analytics, you can transform your engineering operations, enhance collaboration, and accelerate your path to market success. Join top companies in harnessing the power of Haystack for a more efficient and effective engineering process.
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CalcTide's answer
Every day, people need a quick, reliable number to make a real decision. That includes homebuyers running mortgage and affordability calculations, students working through algebra and geometry, people tracking fitness and nutrition, and homeowners planning construction projects such as concrete, paint, and flooring. It also serves small business owners by checking margins, markup, and ad metrics.
Haystack Analytics's answer:
Engineering Leaders and Managers
CalcTide's answer
CalcTide gives a clear answer and then shows how it got there. Each tool explains the formula and the steps behind the result instead of just printing a number. Every calculation is unit-tested before it goes live, so the math is reliable. There are more than 100 calculators across finance, health, math, time, construction, and unit conversions, all free with no signup and no paywall.
CalcTide's answer
CalcTide is built with Next.js and React, styled with Tailwind CSS, and written in TypeScript. The calculation logic lives in pure, unit-tested functions. The site ships as a static export hosted on Cloudflare Pages, which keeps it fast and reliable.
CalcTide's answer
CalcTide is fast, free, and built to answer one task per page without clutter. Most calculator sites bury a simple result under ads and never explain the working. CalcTide leads with the answer, shows the formula and a worked example, and keeps the page light on any device. No account is needed, and there is no paid tier.
CalcTide's answer
CalcTide was built by MavenUp out of frustration with calculator sites that hide a simple answer behind ads and never show the math. The goal was a free site where every tool solves one task clearly, explains how it works, and loads fast on any device. It launched in 2026 and continues to grow by adding the calculators people actually search for.
Based on our record, Haystack Analytics seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Heads up: site is not loading. Ios Safari & macOS Chrome. Mixed Content: The page at 'https://usehaystack.io/' was loaded over HTTPS, but requested an insecure favicon 'http://www.usehaystack.io/favicon.ico'. This request has been blocked; the content must be served over HTTPS. - Source: Hacker News / over 5 years ago
Hey HN! I'm Julian, co-founder of Haystack (https://usehaystack.io). Weโre building one-click dashboards and alerts using Github data. While managing teams from startups to more established companies like Cloudflare, my cofounder Kan and I were constantly trying to improve our team and process. But it was pretty tough to tell if our efforts were paying off. Even tougher to tell where we could improve. We tried... - Source: Hacker News / over 5 years ago
calculator.net - Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
LinearB - LinearB delivers software leaders the insights they need to make their engineering teams better through a real-time SaaS platform. Visibility into key metrics paired with automated improvement actions enables software leaders to deliver more.
CalcSide - Free online calculators and converters for finance, health, math, and more.
GitPrime - GitPrime uses data from any Git based code repository to give management the software engineering metrics needed to move faster and optimize work patterns.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Waydev - Waydev analyzes your codebase from Github, Gitlab, Azure DevOps & Bitbucket to help you bring out the best in your engineers work.