AllTools.dev
AllToolsLab
Omni Calculator
calculator.net
BestToolsKit
geteasetools.com
elec calc
Convertio
Appark.ai
Jotform Mobile Forms
Sensor Tower
App Annie
appfigures
F-Droid
Data.ai
Appfigures Explorer
AllTools.dev is a modern, fast, free online toolkit built for people who need quick, accurate calculators and converters without signing up, creating an account, or wading through cluttered interfaces. The platform offers 500+ tools across finance (mortgage calculators, loan amortization, compound interest, currency conversion, debt payoff, retirement planning), health (BMI, calorie needs, pregnancy tracking, ideal weight, body composition), math (scientific, statistical, geometric, percentage, fraction), science and engineering, date and time utilities, unit conversions (volume, length, temperature, power, area), developer utilities (JSON, regex, JWT, hashing), and interactive math and algorithm visualizations. Every tool is free and works instantly in the browser. No accounts, no paywalls, no sign-in walls, no data collection beyond standard analytics. Calculations happen client-side for speed and privacy. Unlike older established calculator sites that grew through 20 years of ad-heavy layouts and outdated UX, AllTools.dev is built fresh on Astro with a clean, mobile-first, accessibility-conscious interface. New calculators ship weekly based on user demand. Ideal for: students doing homework, developers needing quick conversions, finance-minded folks planning loans and investments, professionals doing scientific or engineering calculations, and anyone who just needs a fast answer without installing an app.
Appark is an all-in-one platform for mobile app market intelligence and competitor research. It helps you analyze downloads, revenue, and rankings across any app, compare competitors side by side, and discover early-stage apps with growth potential.
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AllToolsLab - AllToolsLab offers 50+ free online tools including PDF tools, calculators, converters and text utilities.
Jotform Mobile Forms - Mobile Forms Reimagined. Robust forms that work anywhere.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
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.
App Annie - App Annie is a marketing analytics tool available for apps of all kinds. With App Annie, you can track sales, traffic, and a variety of other factors pertinent to monitoring an app's trajectory.