// somebody sent you this
Your rules, checked against what you actually hold.
Monsa scores every stock in your portfolio against the strategy you wrote down, and tells you which holdings have drifted out of it. Whoever sent you this link uses it on their own book.
What the link changes
A month on the house, for both of you. It goes onto your renewal rather than off the first payment, so there is nothing to enter and no code to keep. You subscribe like anybody else and the days are already counted.
The person who sent it gets the same month you do. That is the whole arrangement: it is not an affiliate scheme, nobody earns a commission, and there is no free tier behind it.
What you would be paying for
You write down what you are looking for in a company. Monsa turns it into rules, scores every stock you track against them every night, and marks the ones that no longer fit. It is the review most people mean to do once a quarter and never quite do.
It never says what to buy. A spreadsheet does a lot of this and the free sites do quotes and charts well; the difference is that this one keeps checking after you stop.
The rules are easiest to write down while you still remember why you bought something. Later, the reason gets rewritten to fit the price.