Ways to automatically detect changes in companies’ fundamental ratios?

Just finished a self-study course, which included stock valuation and companies' fundamentals.

One specific thing was, to try to see trends of increases or decreases over time, in a company's fundamentals (P/B, P/E, profit, etc.); and to take note of reversals in those trends as possible indicators of action to take.

For example, if Company 1 made $90 in profit one year, $120 the next period, $150 the next period, then down to $100 the next period. Or if their P/E went $20, $18, $17, $25.

Is there any sort of service the internet that goes through financial data, to detect these trends like these, and indicate when there's been a reversal in a fundamental's direction?