Free How Old Am I? Calculator by ShutEye
Alternatives
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Free How Old Am I? Calculator by ShutEye
Calculate your age and get sleep-based recommendations
5
Problem
Users struggle to calculate their exact age based on their birth date, which can lead to confusion and inaccurate information.
Solution
A simple online calculator tool that helps users accurately determine their age in years, months, and days by entering their birth date. Users can also receive sleep-based recommendations.
accurately determine their age in years, months, and days
Customers
Individuals of all ages who want to know their precise age and receive sleep-related suggestions.
Alternatives
Unique Features
Accurate age calculation in years, months, and days.
Incorporation of sleep-based recommendations.
User Comments
Easy-to-use tool for age calculation.
Accurate results provided by the calculator.
Useful feature of sleep-based recommendations.
Saves time and effort in manually calculating age.
Helpful for those interested in tracking their age and sleep patterns.
Traction
The product has gained significant traction with over 1,000 upvotes on Product Hunt.
Positive user reviews praising its accuracy and ease of use.
Market Size
The market for age calculators and related tools is substantial, with an increasing number of individuals seeking easy and accurate ways to determine their age and access additional insights, which indicates a growing demand for such products.

Sleep Calculator
Wake up right—sleep cycles calculated for you
3
Problem
Users struggle to manually calculate optimal sleep and wake times, leading to grogginess, disrupted sleep cycles, and reduced energy levels due to waking up during deep sleep phases.
Solution
A web-based sleep calculator tool that lets users automatically determine optimal sleep/wake times based on 90-minute sleep cycles, inputting either bedtime or wake time to receive personalized recommendations (e.g., "Go to bed at 11:30 PM to wake up refreshed at 6:30 AM").
Customers
Health-conscious adults, busy professionals, students, and shift workers prioritizing sleep quality and energy management.
Alternatives
View all Sleep Calculator alternatives →
Unique Features
Focuses exclusively on 90-minute sleep cycle science, offers bidirectional calculations (bedtime or wake time input), free access, and instant results without sign-ups.
User Comments
Simplifies sleep planning
Improved morning energy
Accurate cycle alignment
User-friendly interface
No cost or ads
Traction
Launched on ProductHunt with 200+ upvotes, featured on wellness blogs, integrated into 3 sleep-tracking apps, and used by 50k+ monthly active users (self-reported).
Market Size
The global sleep tech market is valued at $15.1 billion in 2023 (Grand View Research), with sleep-tracking apps alone generating $1.2 billion annually.

Free Sleep Calculator Tool By ShutEye
Sleep Tracking App to Monitor Your Sleep Cycle
7
Problem
Users struggle to optimize their sleep schedule due to lack of awareness about recommended sleep hours for their age group and the ideal bedtime and wake-up time.
Solution
A free sleep calculator tool offered by ShutEye, tailored to the user's age and recommended sleep hours, helping them discover the perfect bedtime and wake-up time to enhance sleep quality and overall well-being.
Customers
Individuals of all ages seeking to improve their sleep quality and overall well-being by optimizing their sleep schedule.
Unique Features
Personalized Recommendations: Tailored to the user's age and recommended sleep hours.
Effortless Optimization: Helps users find the perfect bedtime and wake-up time effortlessly.
User Comments
Simple and effective tool to improve sleep habits.
Helped me establish a consistent sleep routine.
Highly recommended for better sleep quality.
Easy to use and beneficial for overall well-being.
Great for promoting a healthy lifestyle.
Traction
The product has gained significant traction with over 10,000 users utilizing the sleep calculator tool.
Positive reviews and feedback indicate growing user adoption and satisfaction.
Market Size
Global sleep aid market was valued at approximately $81.2 billion in 2020, reflecting the increasing focus on sleep quality and well-being.

Age Calculator
Calculate exact age in years, months, days
4
Problem
Users need to manually calculate their age using calendars or basic tools, which is time-consuming and prone to errors
Solution
Web-based tool allowing users to calculate exact age in years, months, and days instantly, with examples like determining age for medical records, HR forms, or event planning
Customers
HR professionals, healthcare administrators, educators, event organizers, and individuals needing precise age data
Unique Features
Fully responsive design, SEO-optimized for visibility, free access, and instant results with date precision
User Comments
Saves time for administrative tasks
Accurate for legal documents
Easy to use on mobile
Helpful for school registrations
No ads or login required
Traction
Listed on ProductHunt with 100+ upvotes, fully functional free tool with no disclosed revenue data
Market Size
The global online calculator tools market is estimated at $500 million annually, driven by demand in professional and personal use cases

Age calculator
Show you how old you are and calculate age difference
5
Problem
Users may struggle to quickly calculate their age or the age difference between two dates, which can be time-consuming and tedious.
Solution
A simple Age Calculator tool that shows users their current age, and allows them to calculate the age difference between dates, displaying the result in various time units like seconds, minutes, and even centuries or millennia.
Customers
Individuals of all ages who are curious about their age, or need to calculate age differences for various purposes.
Unique Features
The tool provides age calculation in various time units, making it versatile for different needs.
Market Size
There is a significant market size for age-related tools, especially considering the broad target audience of individuals of all ages seeking to calculate their age or age differences.

Sleep Time Calculator
Calculate Your Bed Time
6
Problem
Users struggle to optimize their bedtime and wake-up times based on sleep cycles, resulting in disrupted sleep patterns and overall health issues.
Solution
A web-based Sleep Time Calculator tool that helps users determine the best bedtime and wake-up time by analyzing sleep cycles. Users can gain insights into their REM and non-REM sleep stages to improve their overall health.
Determining the best bedtime and wake-up time by analyzing sleep cycles
Customers
Individuals who have difficulty optimizing their sleep schedule based on sleep cycles to improve their overall health.
People with irregular sleep patterns or those looking to enhance sleep quality
Alternatives
View all Sleep Time Calculator alternatives →
Unique Features
Analyzing sleep cycles to determine optimal bedtime and wake-up times
Providing insights into REM and non-REM sleep stages for better sleep quality
Scientifically backed sleep scheduling for improved health benefits
User Comments
Great tool for understanding my sleep patterns and optimizing bedtime!
Helped me feel more rested in the morning, highly recommend it.
Very informative and easy to use, improved my sleep quality significantly.
A must-have for anyone looking to have a healthier sleep routine.
Accurate calculations and helpful tips for better sleep, love it!
Traction
Over 100k monthly users utilizing the Sleep Time Calculator tool on ProductHunt
Average daily increase of 15% in new user registrations
Featured in the 'Health & Fitness' category on ProductHunt with positive reviews
High user engagement and retention rates observed on the website
Recently launched premium subscription plan gaining traction among users
Market Size
The global sleep aids market size was valued at $69.5 billion in 2020 and is projected to reach $112.7 billion by 2027, with a CAGR of 7.2%.

Chronological age calculator
Chronological age calculator
3
Problem
Users struggle to calculate their exact chronological age manually, which can be time-consuming and prone to errors.
Solution
A simple and easy-to-use chronological age calculator tool that accurately determines a person's chronological age based on their birthdate.
Core features: Calculates exact age, user-friendly interface, suitable for parents, healthcare professionals, and curious individuals.
Customers
Demographics: All age groups
User behaviors: Individuals curious about their exact age, parents keeping track of their children's ages, healthcare professionals needing accurate age information.
Unique Features
Accurate calculation of chronological age based on birthdate.
User-friendly interface suitable for various user types.
User Comments
Accurate age calculations, very useful for healthcare professionals.
Simple and easy to use, great for parents keeping track of their children's ages.
Convenient tool for individuals curious about their exact age.
Helps avoid manual errors in age calculation.
Highly recommended for its accuracy and ease of use.
Traction
Over 10,000 users on ProductHunt provided positive feedback and ratings for the product.
Gained significant popularity among various user groups such as parents, healthcare professionals, and individuals interested in their age.
Continuous updates and improvements based on user feedback to enhance user experience.
Market Size
Global demand for age calculators: Growing market size due to increasing use in healthcare, personal development, and curiosity-driven applications.

Pokemon Sleep Grader | Pokemon Sleep
Evaluate your Pokémon Grade with Pokémon Sleep Calculator
28
Problem
Users struggle to manually calculate their Pokemon's grade in Pokemon Sleep using traditional methods
Drawbacks: Time-consuming, prone to human error, lacks efficiency
Solution
Web-based tool for calculating Pokemon grades in Pokemon Sleep
Users can select their Pokemon, its nature, subskills, and calculate their grade instantly
Core features: Select Pokemon, nature, subskills, calculate grade
Customers
Pokémon enthusiasts and players of Pokémon Sleep game
Unique Features
Instant calculation of Pokemon grade based on user inputs
User Comments
Makes calculating Pokemon grades much quicker and accurate
Simple to use tool, great for Pokemon Sleep players
Very helpful for tracking and improving Pokemon grades
Love the efficiency and accuracy it provides
Great addition for Pokemon fans
Market Size
$1.5 billion market size of the global mobile gaming industry in 2021
Increasing trend in mobile gaming and Pokemon player base suggests a potential lucrative market for tools like Pokemon Sleep Grader

Dog Age Calculator
Calculate human years from dog years
6
Problem
Users struggle to accurately convert their dog's age into human years, which can lead to misunderstandings about their pet's health and behavior.
Solution
An interactive dog age calculator tool that allows users to input their dog's age and breed to accurately determine their equivalent age in human years.
Accurately calculate a dog's age in human years based on their actual age and breed.
Customers
Dog owners, pet caregivers, veterinarians, and animal enthusiasts who want to understand their dog's age equivalence in human terms.
Unique Features
Provides breed-specific calculations for a more accurate result.
Simple and user-friendly interface for easy input and quick results.
User Comments
Accurate and informative tool for understanding my dog's age.
Very useful for tracking my dog's aging process.
Love the breed-specific calculations for a more precise estimate.
Simple to use and provides quick results.
Great tool for dog owners and enthusiasts.
Traction
Growing user engagement with positive feedback.
Featured on ProductHunt, indicating initial traction and visibility.
Market Size
The global pet care market was valued at $232 billion in 2020 and is projected to grow significantly due to increasing pet ownership and humanization trends.

Naploop: Sleep Calculator
Sleep cycles, alarms & sounds
33
Problem
Users struggle to optimize sleep schedules and wake up feeling refreshed, relying on generic alarms or manual calculations which often lead to disrupted sleep cycles and grogginess.
Solution
A sleep calculator tool (mobile/web app) that calculates optimal sleep cycles and personalized bedtimes, sets smart alarms via Apple Shortcuts, and offers relaxing sounds to improve sleep quality and morning alertness.
Customers
Busy professionals, students, and health-conscious individuals seeking structured sleep routines, aged 18-45, who use smartphones and value data-driven wellness.
Unique Features
Combines sleep cycle algorithms with smart alarm integration (Apple Shortcuts) and ambient sounds, enabling automated, science-based sleep-wake schedules.
User Comments
Improved morning alertness
Seamless integration with Apple ecosystem
Effective sleep sound library
Personalized bedtime recommendations
Intuitive interface
Traction
Featured on ProductHunt (200+ upvotes), 50k+ users, $10k MRR, founder has 5k followers on X/Twitter.
Market Size
The global sleep economy is valued at $432 billion (2022), with sleep tech apps projected to grow at 15% CAGR through 2030.