Just call or email and I will enter your feed back here!.

Harish or Self : Best website to quickly revise class 1-10 maths and a bit of physics once a week! I can't live without it! Especially if you interact with children etc and have to teach them. I think it will be useful for scientists across the world! Just sum and product! Also check out the LCD Calculator for cheapest math in github.

Ravishankar : This new website by Dr. Harish is quite thought provoking, I am sure it will interest the curiosity amongst children if they see this. For instance there is the program of summing 2 digits randomly every 5 seconds and it gives spot answers which can be calculated mentally. This will increase speed of calculation ability in children. The code for finding compound interest for an amount for a given interest and a priciple of 1000 re is interesting. I would recommend principal amount to be shown on code. The continuously moving sine waves are interesting to watch!. I  wish the website success and look forward to more interesting features.

GIrija :

Anonymous : Make a seperate website for blood level calculator and discuss with medical doctors.

A school : Need to add delay between answer and problem in all calculations like 1 shown.