The web is littered with thousands of programs, newsletters, and websites purporting to have something to give a stock trader an edge in finding stock trading picks that work better than what they can find on their own. Some of it is free, but the majority of it requires some form of payment. Either way does not matter, what actually matters is if the tools have any merit at all in finding good day trading picks. Sometimes this is easy to figure out, but most likely it will be rather difficult and takes a bit of research.
What you want to avoid are any tools or software that is highly user dependent. What I mean by this is if you put the tool in the hands of the developer or expert, they can tell the nuances of when it should be used and when it should be ignored, given a certain set of circumstances. This type of tool is very hard to learn because as a new user, you have no idea about these nuances. Most of the time, it is this little fact that makes a tool work, or more likely, NOT WORK. Examples of this abound all over the net. Most any software with trading tools and indicators falls into this category. This is exactly how you can have a tool that seems to have "proof" but when you try to use it, it does not live up to expectations. This does not mean the tool is no good, but its highly dependent on the skills of the user of the tool for any sort of real success.
On the other hand, you have a set of websites and newsletters that do all the work for you. No guesswork involved, nor user skill involved much. Simple and straightforward. This type of tool is great IF it can be determined ahead of time that the site or tool ACTUALLY works as its advertised to. While the stock market is a constantly changing beast, a tool or method of picking day trading picks should be somewhat consistent no matter what is going on. Sure there will be times where its really in sync with the market, and times where its off. But there should be no times where it performs so poorly as to completely nullify any gains made during the good times. These types of tools fall into 3 categories: stock picking websites and newsletters, where a skilled person is sharing their personal picks, market scanners such as market screen, trade ideas and others, and fully automated day trading systems of one sort or another which use a computer exclusively to broadcast trade ideas.
With this said, it requires a decent amount of research prior to using any outside tool to assist in finding trading ideas. After all, you are in the market with real money, and can lose real money quickly if you don't know what you are doing or are relying on something that just does not hold up over time. Prior to engaging any tool, it is always best to do as much research as you can, including looking for review sites, and forums where current users are chatting about the tool.