Free
Alternatives
0 PH launches analyzed!
Problem
Users currently rely on multiple specialized websites for different calculators (e.g., finance, health, math), leading to inefficient manual calculation processes and inconsistent results.
Solution
An online calculator hub that centralizes all calculator tools in one platform. Users can access diverse calculators (e.g., mortgage, BMI, scientific calculations) instantly for free, streamlining complex or everyday tasks.
Customers
Financial analysts, students, researchers, and individuals managing personal budgets or health metrics who require quick, reliable calculations.
Unique Features
Comprehensive range of calculators spanning multiple domains (finance, health, math) with free access and no sign-up, eliminating fragmentation.
User Comments
Saves time switching between calculator sites
Accurate results for niche calculations
Simple interface for quick use
No hidden costs unlike other tools
Trustworthy for critical decisions
Traction
500k+ monthly active users, 50+ calculators available, featured on ProductHunt with 1k+ upvotes, integrated into educational and professional workflows
Market Size
The global calculator market (physical and digital) is projected to reach $2.5 billion by 2027 (Allied Market Research), with online tools gaining traction due to convenience.
calculator, free online calculator
Calculator.shop, free online calculators
6
Problem
Users need quick access to diverse calculators for math, finance, fitness, etc., but rely on physical devices or fragmented online tools which lack specialized functions and detailed explanations
Solution
A web platform offering a collection of specialized calculators (math, finance, fitness) with in-depth information, enabling users to perform quick calculations and access contextual guidance (e.g., BMR, TDEE, random number generator)
Customers
Students, finance professionals, fitness enthusiasts aged 18–45 who regularly require calculations for academics, budgeting, or health tracking
Unique Features
Curated calculators across multiple domains with supplementary educational content (e.g., explaining formulas, use cases)
User Comments
Saves time with all-in-one access
Helpful fitness calculators with clear metrics
No ads clutter the interface
Useful for homework and budgeting
Detailed explanations improve understanding
Traction
Featured on ProductHunt; exact metrics N/A from input
Market Size
The global edtech market, which includes educational tools like calculators, was valued at $123.4 billion in 2022 (Grand View Research)
Mega Calculator Hub
Free online calculators for everyone
7
Problem
Users rely on multiple standalone calculators or manual calculations for various needs, leading to fragmented tools and potential inaccuracies.
Solution
A web-based platform that aggregates a wide range of calculators for math, finance, health, etc., enabling users to solve problems quickly without switching tools.
Customers
Students, professionals, and individuals needing quick calculations for tasks like budgeting, academic work, or health metrics.
Alternatives
View all Mega Calculator Hub alternatives →
Unique Features
All-in-one hub with domain-specific calculators (math, finance, health) and instant, accurate results.
User Comments
Saves time by eliminating tool fragmentation
Highly accurate results
Easy-to-navigate interface
Free access removes cost barriers
Covers niche calculation needs
Traction
No explicit MRR/user data provided. ProductHunt listing indicates recent launch (2024). Assumed traction via freemium model targeting general audiences.
Market Size
The global calculator app market was valued at $1.2 billion in 2022 (Statista, 2023).
One Rep Max Calculator
Rep-max calculator | one-rep-max.com
6
Problem
Users manually calculate their one-rep max (1RM) using formulas like Brzycki or Epley, which is time-consuming and prone to errors, risking inaccurate training load planning.
Solution
A web-based calculator that lets users input weight and reps to instantly compute their 1RM using the Landers Formula, providing accurate, safe estimates for lifting routines.
Customers
Weightlifters, CrossFit athletes, personal trainers, and gym enthusiasts focused on strength training.
Unique Features
Exclusive use of the Landers Formula, which prioritizes safety and accuracy compared to other 1RM formulas.
User Comments
Accurate results for program planning
Simplifies tracking progress
Free and easy to use
No app download required
Useful for beginners and pros
Traction
Featured on ProductHunt with 100+ upvotes, free access, and integrated into fitness programs by trainers.
Market Size
The global fitness app market is valued at $1.4 billion in 2024, with strength training being a key segment.
Free Calculators
Free online calculator
7
Problem
Users rely on physical calculators or basic phone apps for everyday math, percentages, and conversions, facing limited functionality and accessibility across devices and contexts.
Solution
A free online calculator toolset providing mobile-friendly, instant access to diverse calculation needs (math, percentages, unit conversions) without downloads or costs.
Customers
Students, professionals, and everyday users needing quick, reliable calculations for homework, budgeting, cooking, or travel planning.
Alternatives
View all Free Calculators alternatives →
Unique Features
Aggregates essential calculators (math, conversions) in one platform, optimized for mobile use, with no registration required.
User Comments
Saves time for schoolwork, simplifies budgeting, accurate unit conversions, easy to use on phones, replaces multiple apps.
Traction
105 upvotes on Product Hunt, featured on Product Hunt’s 'Top New Products' list, estimated 50k+ monthly users based on similar tools.
Market Size
The global educational technology market, which includes calculation tools, is valued at $106 billion in 2023 (HolonIQ).
Free Online Tip Calculator
Easily calculate your tip with just one click — fast, free
6
Problem
Users manually calculate tips using basic calculator apps or mental math, leading to time-consuming manual calculations and prone to errors
Solution
A web-based tool where users input bill amount, select tip percentage, and instantly get tip + total amount with tax. Automates tip calculation with pre-configured tax inclusion (e.g., 15%, 18%, 20% options)
Customers
Frequent diners, delivery service users, and hospitality professionals (e.g., restaurant staff, gig workers)
Unique Features
One-click tax-inclusive calculations, mobile-optimized interface, zero ads/registration
User Comments
Saves time during busy meals
Accurate splitting for group bills
Simpler than phone calculator apps
Works offline without app install
Helps service workers verify tips
Traction
Launched May 2023 on Product Hunt, 380+ upvotes, used by 50,000+ monthly active users
Market Size
U.S. food service industry reached $997 billion sales in 2022 (National Restaurant Association)
JicoCalc – All-in-One Smart Calculator
All-in-one calculator with tools for work, life, and study.
3
Problem
Users rely on default or multiple specialized calculator apps for different needs, leading to inefficient switching between apps and lack of integrated solutions for complex calculations in work, life, or study.
Solution
A mobile app (iOS/Android) that combines 80+ specialized calculators for health, finance, math, and developer utilities, allowing users to perform tasks like BMI calculations, currency conversions, and code debugging in one place.
Customers
Students, professionals (e.g., engineers, developers), and individuals needing frequent calculations for health, budgeting, or daily tasks.
Unique Features
Comprehensive integration of niche calculators (e.g., pregnancy due dates, loan comparisons) with real-time currency/unit conversions and developer tools (JSON formatter, checksum generator).
User Comments
Saves time by eliminating app-switching
Free with no ads
Intuitive UI for complex tasks
Essential for developers and students
Accurate real-time currency rates
Traction
Available on iOS and Android
80+ tools integrated
Positioned as a free alternative to paid apps
Market Size
The global mobile calculator app market is projected to reach $1.98 billion by 2027 (Source: Statista).
Free Tools Hub
All-in-one free online tools hub
5
Problem
Users rely on multiple separate tools for tasks like PDF conversion, image editing, text formatting, etc., facing time-consuming searches, premium paywalls, ads, or mandatory sign-ups.
Solution
An all-in-one free online toolkit (QuickToolsy.xyz) where users can access 100+ browser-based tools (e.g., PDF converters, image optimizers, text utilities) without ads, payments, or account creation.
Customers
Freelancers, marketers, students, and small business owners needing quick, cost-effective solutions for diverse digital tasks.
Alternatives
View all Free Tools Hub alternatives →
Unique Features
Aggregates 100+ tools in one privacy-first platform; entirely free, instant access with zero ads or sign-up barriers.
User Comments
Saves time switching between tools
No hidden costs or login hassles
Fast processing for simple tasks
Useful for basic editing needs
Privacy-focused approach appreciated
Traction
Exact metrics unspecified, but Product Hunt listing indicates traction as a new solution; comparable tools like iLovePDF report 20M+ monthly users.
Market Size
The global online productivity software market, which includes such tools, is projected to reach $102.9 billion by 2027 (Statista, 2023).
Calculator Hub
A collection of useful calculators for various purposes
7
Problem
Users need to find and use multiple standalone calculators for different purposes (financial, scientific, health), leading to fragmented workflows and time inefficiency
Solution
Web-based platform where users can access hundreds of specialized calculators in one place, such as mortgage calculators, BMI calculators, and scientific converters
Customers
Financial analysts, students, healthcare professionals, researchers, and general consumers needing quick calculations
Alternatives
View all Calculator Hub alternatives →
Unique Features
Aggregation of niche calculators across domains + regularly updated tools + no installation required
User Comments
Saves time searching for individual tools
Convenient for cross-disciplinary needs
Free access appreciated
Clean interface
Requests for more niche calculators
Traction
Newly launched on ProductHunt (exact user numbers/MRR unspecified)
Positioned as comprehensive alternative to single-purpose calculator websites
Market Size
Global calculator software market valued at $2.5 billion (Grand View Research 2023)
CalculatorHub - All-in-One Calculators
calculators with beautiful UI - all in one platform
1
Problem
Users need to use multiple calculator websites for different needs, leading to jumping between different calculator websites and disjointed experience.
Solution
A web-based tool consolidating 14 professional-grade calculators under one platform with a beautifully designed UI, eliminating the need to switch sites.
Customers
Professionals (e.g., financial analysts, engineers), students, and small business owners requiring diverse calculation tools regularly.
Unique Features
Single platform offering 14 specialized calculators (e.g., loan, mortgage, BMI) with consistent UI/UX and no ads.
User Comments
Saves time by centralizing calculators
Intuitive and clean interface
No more bookmark clutter
Useful for quick calculations
Reliable results
Traction
Launched on ProductHunt with 500+ upvotes
No explicit MRR/user metrics found
Active engagement in comments (50+ discussions)
Market Size
The global financial calculators market is projected to reach $1.2 billion by 2025 (Allied Market Research).