Multi-purpose calculator for mobile web (Annuity) with source code

Hello,

I made breakthrough yesterday. My productivity exploded.
I made Excel-like calculator, allows you to calculate discount rate really easily.

If you want to calculate annuity for three years, just type like

1/1.03 + 1/1.03^2 + 1/1.03^3

I have been in search for this type of calculator, but I couldn't

I really take care of user experience. If any kind of problems that you have, please, let me know.
I made this while I am studying CFA and AICAP. I hope it would help you a lot study finance.

It also has a function that stores the variable that you want. You can repeat the variable. Press "V" button when you want to repeat the variable. It really helps when you calculate NPV.
[Open the Calculator]

Source code is available in my github website.
[Source Code]

[Bug fixed-04/10/2016]
- It doesn't recognize "e^(-3)". I fixed it with simple string manipulation
- I don't have a great idea how to calculate "ln(2)" in the stack calculator. Please, someone gives me a great idea.

Finance Calculator & Z-score Calculator on the web

Hi All finance friends!

What bothered me during my MBA course was two. One was the financial calculator. I didn't bring my calculator all the time. It hassled me to calculate YTM stuff with just normal calculator. It bothers me that I had to look into the Z-score table all the time to calculate the risk.

Here, I made financial calculator (web, mobile supported) and z-score calculator. I am going to add function one by one. Please, use this a lot and share it with your friends!

You can use my mobile applications on your smartphone!

[Open Finance Calculator]

[Open Z-score Calculator]