Make Smarter Decisions.
Calculate the Real Trend.
Free calculators and mini apps to compare options, spot hidden costs, and decide smarter — for money, shopping, social media, and everyday life.
Explore by Category
Money, cars, home, career, life planning, and more.
Life
Financial simulators & life planning
Money
Investments, savings & debt
Cars
Buy, lease, EV vs petrol
Home
Rent, buy, solar & energy
Career
Job offers, salary & work decisions
Education
University & student loans
Travel
Trips, carbon & nomad costs
Shopping
Buy vs repair & subscriptions
Technology
Devices, cloud & connectivity
Health
Care, fitness & medical costs
Insurance
Coverage gaps & premiums
Family
Kids, leave & caregiving
Energy
Solar, electricity & heating
Business
Break-even, pricing & runway
Social & Trends
Ads, creators, SEO & viral reach
Most Used Tools
Question to decision in four steps
Step 1
Find your decision
Search or browse by category.
Step 2
Enter your numbers
Results update instantly.
Step 3
Compare options
See costs side by side.
Step 4
Decide with clarity
Plain-language recommendations.
Common questions
Is TrendMandi free?+
Yes — every tool is free. No sign-up, no paywall.
Is my data stored?+
No. Calculations run in your browser only.
Is this financial advice?+
No. These are estimates for planning — consult a professional for major decisions.
Ready to decide smarter?
Search for your decision or open the library — free, private, no account needed.