Lotto Smart generates lines for Lottery 6/49 and Lottery 6/54 by combining the numbers you choose with the criterion you define.
Although it is said to be for 6/49 and 6/54 lotteries this app can be used for any 6 balls drawn lotteries having Lotto Balls less than 54.

Criterions are formulated as below and called formulas within the app.

Pick Match Prize Prob.% Lines
Where
Pick : is the amount of numbers you will pick
Match : is the amount of numbers matching drawn Lotto Balls with your picked numbers
Prize : is your target to win
Prob.% : is the probability of having one winning ticket of the target Prize (100% 90% 50%)
Lines : are the lines you have to play.

Prob.% 100 means you will surely have at least one winning ticket of the prize stated.
Formulas having 90% and 50% probabilities decreases dramatically lines to play that's why they are included in the app.

You can first pick your numbers and then select a formula or you can first select a formula and then pick your numbers.
In either case you can find out what you will win by a draw simulation.

Formulas up to 3 lines are free.

If you are good at picking numbers in which you can match more than 2 of the winning numbers Lotto Smart will be helpful to you.

Wish you good luck.