Sensifty
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Why I built Sensifty

The short answer: I kept buying good companies at bad moments. The long answer involves three names, one humbling test and a lot of late evenings.

The habit

I’m an investor, like you probably are. I’d rather read about a business than stare at its chart, and for years my process went like this: find a company I liked, do the homework, get convinced, buy. The trouble was the timing. By the time I was convinced, so was everyone else, and the stock had usually just had a big run. A few weeks later it would be cheaper, and I’d be annoyed with myself all over again.

The companies weren’t the problem. The problem was that I kept buying them when they were stretched, even by their own standards. A stock that normally sits a little above its long-term average would be miles above it, and I had no quick, honest way to see that before I clicked buy.

The first version had a different name

The first thing I built was called Entry Ladder. It drew three “buy zones” under the price and suggested splitting your money across them. It worked, in the sense that it ran. But the longer I looked at it, the less I liked a piece of software telling people where to buy. I’m not anyone’s adviser, and a browser extension certainly shouldn’t pretend to be one.

So the zones became levels, L1 to L3, and the tool stopped giving instructions and started describing what it saw. The name changed to Stretch Watch, which was accurate and a little dull, and then to Sensifty. More on that below.

The test that humbled me

Before charging anyone a rupee, I wanted to know whether the idea actually held up. So I replayed it on sixteen years of daily prices for NIFTY-50 stocks: 7,253 moments where someone might have decided to buy, each one tested several different ways.

The results were not what I’d hoped. Waiting for a stretched stock to cool, or spreading purchases across the levels, changed one-year returns by about one percentage point either way. The levels held about as often as random prices at the same depth. If I’d been planning to sell a magic timing tool, that would have been the end of the story.

But the test also showed what the idea is genuinely good for. It doesn’t make money on its own. What it does is stop you doing the thing I kept doing: buying in a hurry at the top because a story got exciting. It gives you a calm, consistent way to see how far a stock has run, and it nudges you when the heat has gone. That’s a smaller promise and an honest one, so that’s the one Sensifty makes. Every number is on the What it is page.

Why it’s so quiet

Most alert tools are noisy. They ping when a price crosses a line, ping again when it crosses back, and keep going until you mute the lot. Sensifty fires once per cycle: a stock has to get stretched first, then come back down. For a typical stock that happens two or three times a year. If you hear from Sensifty, it means something.

Why the name

Sense, plus nifty. “Nifty” is an old English word for clever and handy, the sort of thing someone’s grandfather says about a good pocket knife. A little sense about prices, in a handy package, is what this tries to be. It also turned out to be short, easy to say and available as a .com, which these days feels like a small miracle.

Why ₹49

The free version is meant to be properly useful on its own, and it will stay free. Pro exists because price data and servers cost money every month, and I’d rather charge a small, honest amount than show ads or sell anything about you. ₹49 is about the price of a plate of idli and a coffee. If it isn’t worth that to you, the free version is right there, and so is the 7-day refund.

What’s next

Telegram alerts and a short 4 pm digest of your watchlist are being built. After that, whatever you write in and ask for. Every email to support@sensifty.com is read by a person, and the good ideas tend to get built.

Thank you for reading this far. Most people don’t, and I appreciate it.

A fellow investor