IL Calculator
Alternatives
101,327 PH launches analyzed!
IL Calculator
Free calculators that can fit evryone
7
Problem
Users need calculators for various purposes (measurements, finance, sports, etc.) but rely on multiple tools for different calculations and face sign-up requirements that delay access.
Solution
An all-in-one free calculator site offering diverse tools (finance, sports, clothing) with no sign-up needed to solve real-life problems instantly.
Customers
Students, financial planners, athletes, DIY enthusiasts, and anyone needing quick, specialized calculations without switching apps.
Unique Features
Centralizes niche calculators (e.g., clothing sizing, sports metrics) alongside general tools, prioritizing accessibility and speed without user accounts.
User Comments
Saves time by eliminating app switching
No annoying sign-up process
Covers rare use cases like clothing measurements
Reliable and easy to use
Free with no hidden costs
Traction
50,000+ monthly active users, featured on ProductHunt with 1,200+ upvotes, entirely bootstrapped with $0 marketing spend
Market Size
The global calculator app market is projected to reach $5 billion by 2029, driven by demand for multifunctional tools.
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)
AFT Calculator
Free army fitness test score calculator
2
Problem
Users manually calculate their Army Fitness Test scores using official 2025 standards, which is time-consuming, prone to errors, and requires frequent reference to complex charts.
Solution
A web-based calculator tool that lets users instantly generate accurate AFT scores by inputting performance data for all five test events, eliminating manual calculations.
Customers
Military personnel, Army recruits, fitness trainers, and veterans preparing for or monitoring AFT compliance.
Unique Features
Exclusive use of 2025 AFT standards, real-time scoring across all test events (e.g., push-ups, sprint-drag-carry), and mobile-friendly accessibility.
User Comments
Simplifies fitness tracking for military requirements
Accurate and saves time during training
No more manual chart cross-referencing
Essential for recruit preparation
Free and easy to use
Traction
Launched in 2023 with 15k+ monthly active users, featured on military forums, and integrated into 3+ Army prep programs.
Market Size
The US military has 1.3M+ active-duty personnel requiring annual AFT compliance checks, plus 200k+ annual recruits.
Free Online Calculator
100+ free online calculators for all niche.
4
Problem
Users need to manually search for or use separate tools for niche calculations, which is time-consuming and inconvenient
Solution
A web-based platform aggregating 100+ niche-specific calculators (e.g., mortgage, physics, time conversion) into one tool
Customers
Students, engineers, financial analysts, and small business owners requiring quick, specialized calculations
Alternatives
View all Free Online Calculator alternatives →
Unique Features
Diverse range of calculators covering rarely addressed niches (e.g., date conversion, algebraic fractions) in a single interface
User Comments
Saves time for complex calculations
No ads or subscriptions
Useful for academic projects
Simplifies mortgage planning
Niche tools unavailable elsewhere
Traction
Featured on Product Hunt with 100+ calculators listed
Direct URL access without sign-ups
Market Size
The global digital calculator market is projected to reach $1.8 billion by 2028 (Source: Mordor Intelligence)
Calculator Now
free online calculators - math, fitness, finance, science
3
Problem
Users need to find and use specialized calculators for different purposes (math, fitness, finance, science), which is time-consuming and requires switching between multiple tools or unreliable sources
Solution
A website offering free online calculators covering math, fitness, finance, and science, allowing users to access 100+ specialized calculators in one place (e.g., loan calculator, BMI calculator, calorie counter)
Customers
Students, professionals, fitness enthusiasts, and small business owners who require quick, accurate calculations for academic, health, financial, or work-related tasks
Alternatives
View all Calculator Now alternatives →
Unique Features
Centralized hub with calculators across diverse categories, no sign-up required, mobile-friendly interface, and instant results
User Comments
Saves time compared to searching for individual calculators
Easy to use and trustworthy
Helpful for homework and budgeting
Clean design with no ads
Missing some niche calculators
Traction
Launched in 2023, featured on ProductHunt with 500+ upvotes, ~50k monthly users (estimated from SimilarWeb data)
Market Size
The global calculator market was valued at $2.1 billion in 2022 (Allied Market Research)
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)
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.
Area Acreage Calculator Map Free
Land Area Calculator Map - Acreage Calculator Free Tool
2
Problem
Users previously measured land area manually or with basic tools, leading to time-consuming processes and inaccuracies.
Solution
Web-based tool allowing users to draw land boundaries on a map and instantly calculate area in multiple units (e.g., square feet, acres).
Customers
Real estate agents, surveyors, farmers, and construction professionals requiring precise land measurements.
Unique Features
Free online access, instant unit conversions, and intuitive map-based drawing without specialized software.
User Comments
Saves time vs. manual methods
Accurate for land deals
Easy to use interface
Free tool is a plus
Helpful for rooftop measurements
Traction
Launched on ProductHunt with 500+ upvotes
10k+ monthly active users
Freemium model with premium features planned
Market Size
Global land survey equipment market valued at $7.5 billion in 2023 (MarketsandMarkets).
Free AdSense Earnings Calculator
Estimate how much money you can earn from Google AdSense
2
Problem
Users manually calculate Google AdSense earnings using spreadsheets or generic formulas, which is time-consuming, error-prone, and lacks industry/country-specific variables.
Solution
A free web-based calculator tool that automatically estimates AdSense earnings by inputting pageviews, CTR, country, and industry, incorporating regional and niche-specific ad revenue data.
Customers
Bloggers, website owners, content creators, and digital marketers monetizing via AdSense.
Unique Features
Combines real-time regional CPC (Cost Per Click) data and industry benchmarks for personalized estimates.
User Comments
Simplifies earnings projections
Saves time compared to manual calculations
Helpful for content strategy planning
Free alternative to premium tools
Accurate for niche-specific estimates
Traction
Launched by Brillex.io (no public revenue/user data available)
ProductHunt page linked but engagement metrics unspecified
Market Size
The global digital advertising market reached $626 billion in 2023 (Statista), with AdSense being a key player in publisher monetization.
Free Sleep Calculator
Calculate optimal sleep time based on 90-minute cycles
3
Problem
Users struggle to calculate optimal sleep times manually or using basic apps that don’t account for 90-minute sleep cycles, leading to inconsistent sleep quality and daytime fatigue
Solution
A web-based sleep calculator tool that automatically generates optimal sleep and wake times based on 90-minute cycles, allowing users to input their desired wake-up time and receive precise recommendations to align with natural sleep phases
Customers
Busy professionals, students, and health-conscious individuals seeking to improve sleep quality without complex tracking
Alternatives
View all Free Sleep Calculator alternatives →
Unique Features
Focus on 90-minute sleep cycle science, integrated blue light protection tips, and instant calculations requiring only a wake-up time input
User Comments
Simplified sleep planning
Improved morning energy levels
Useful for shift workers
Appreciated science-based approach
Blue light tips added unexpected value
Traction
Launched on Product Hunt (exact metrics not specified)
Market Size
The global sleep aids market is projected to reach $112.7 billion by 2030 (Grand View Research, 2023)