The Martingale system is not designed only for the http://roulette77.co.za/european-roulette. It can be applied for every game that has odds of 1:2, such as blackjack. However, the Martingale strategy is mostly used on the roulette.
The strategy is old and fake. The strategy says that you should increase your bets while you are losing in order to cover the previous losses. Therefore, if you lose 1 dollar, you must bet 2 on the next round with an odd of 1:2 in order to recover the lost dollar. While the theory might sound good, in practice, you will discover it is a lost cause. If you lose 5 or 6 hands consecutively (believe me, this could happen), you will have to bet 7000 or even 8000 dollars to recover 1 lousy dollar. The casinos are also aware about the players applying this strategy; therefore, they have advanced techniques to prevent this kind of playing.
If you are looking for helpful roulette software online, you might find some programs that would seem helpful. Those programs could remember the numbers that won in the last rounds (of course, you can also do this with a pen and a piece of paper). However, those programs will also calculate the probabilities of a certain number to be the next winner. The majority of those programs are scams. If you find this kind of program, make sure it has a free trial version. Try it for a while, and if it proves to be effective, buy the complete version.
Good Roulette Betting Strategies
D' Alembert system
This system was developed as a reply to the failing Martingale strategy. It is based on the same principles, but it states that you should increase your bets while you are winning. This way, you will create some solid bankroll, and you could prevent major losses at the same time. Most advanced roulette players are using this strategy successfully along with some in-game strategies.
There is no proven strategy that could guarantee you winnings. Those strategies are only designed to increase your chances, and a strategy promising you "guaranteed" winnings is surely a scam. Make sure to check the source of any downloaded strategy for roulette, ask on forums and blogs, and buy only those effective strategies that could really improve your playing style. There are also many free roulette strategies that could help you, therefore you might take some time to find those documents online.