Free calculators, comparators, and simulators for smarter decisions — from AI costs to pet budgets to home projects.
Compare costs across GPT-4o, Claude, Gemini, and Llama. Input your usage and see which model saves you the most.
Enter your Mbps and find out what you can actually do — how many streams, video calls, or gaming sessions at once.
Photos, videos, games, music — enter what you store and find out exactly how much space you need.
Find the ideal viewing distance for your screen, or the right screen size for your desk setup.
List all your subscriptions and see the real annual total — plus what that money could grow to if invested instead.
Estimate your self-employment tax, quarterly payments, and take-home pay as a 1099 freelancer.
Pick a side hustle, set your weekly hours, and see a realistic income projection over 3, 6, and 12 months.
Forget the old "multiply by 7" myth. Get your dog's real human age based on breed and size, backed by science.
How much should you feed your dog daily? Enter weight, age, and activity level for a personalized feeding guide.
The real lifetime cost of owning a dog or cat — food, vet, insurance, grooming, and everything else, year by year.
Compare the 10-year total ownership cost of an electric car vs. gas — charging, insurance, maintenance, depreciation, and incentives.
Plan your route, pick your car, and see exactly how much gas (or charging) will cost for your next road trip.
Enter your room dimensions and find out exactly how many cans of paint you need. Accounts for doors and windows.
Calculate exactly how much concrete, gravel, or sand you need for your project. No more guessing at the hardware store.
How many rolls do you need? Enter wall measurements and pattern repeat to get the right amount first time.
Check your password strength, 2FA usage, and overall online security posture — get a score and actionable tips to improve.
Automated weather prediction trading bot for Polymarket
Crypto data endpoints — Kimchi Premium, Stablecoin Premium, Token Prices (Base & Solana)
Price guessing game — App in Toss
Speed tapping mini-app on Telegram
Documenting the journey of building automated income streams with AI
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