Live mini-apps
Tools Forged in Fire.
A taste of what we build — every one of these actually works. Imagine what we'd build for you.
Want tools like these inside your own website? We integrate them too.
Finance & Business
Calculator
A clean, full-keypad calculator.
SIP Calculator
See how monthly investments grow over time.
Lumpsum / ROI
Project a one-time investment's growth, year by year.
| Year | Value | Gain |
|---|---|---|
| 1 | ₹1,12,000 | ₹12,000 |
| 2 | ₹1,25,440 | ₹25,440 |
| 3 | ₹1,40,493 | ₹40,493 |
| 4 | ₹1,57,352 | ₹57,352 |
| 5 | ₹1,76,234 | ₹76,234 |
| 6 | ₹1,97,382 | ₹97,382 |
| 7 | ₹2,21,068 | ₹1,21,068 |
| 8 | ₹2,47,596 | ₹1,47,596 |
| 9 | ₹2,77,308 | ₹1,77,308 |
| 10 | ₹3,10,585 | ₹2,10,585 |
Loan EMI Calculator
Monthly payment, interest, and breakdown.
Compound Interest
Watch compounding work over time.
Currency Converter
Convert between USD, INR, EUR, GBP, AED, and JPY.
For demo purposes — rates may not be current.
Profit Margin & Discount
Margin, markup, and discounted price.
Health & Fitness
BMI Calculator
Body Mass Index with a visual gauge.
Calorie Needs
Estimate your daily energy requirement (Mifflin-St Jeor).
Real Estate
Mortgage Affordability
How much home loan you can comfortably take.
Rent vs Buy
Compare the long-run cost of renting vs buying.
Simplified estimate — excludes taxes, loan interest, and maintenance nuances.
Productivity & Tools
Pomodoro Timer
Focus in 25-minute sprints.
To-Do List
Add, complete, and clear your tasks.
- Book a 15-min call with FireFlash
Age Calculator
Your exact age, live to the second.
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Tools are provided for general guidance and may not be fully accurate.