iPad game for preschool children

Hello! I have a nice game scatched and need to programme it. From a programmer point of view, it should be quite easy. There is gonna be 3 sets of cards. Each set has 12 cards. A card looks like the one on the picure. The system is the same on every card. Bigger part on the left, with problem to solve, and a smaller part on the right, with options. For every card we need to set the same things to create the card. 1. The bigger part - Background colour. - Background picture (bitmap) - Fields for the right answers (moved from the smaller right part) -- number of the field will vary -- size of the field -- position of the field -- backround colour -- background picture 2. The smaller part - Background colour. - Background picture (bitmap) - Fields for the right answers -- number of the field will vary -- size of the field -- position of the field -- where it will fit on the bigger part -- backround colour -- background picture With this setting, we will create all cards in a feww cliks. It would be nice, if I would be able to create new card myself. Just by downloading the right pictures to the right areas. But I don`t know, if it`s possible. The game will be for free. 3 cards in each set will be for free (not necessarilly the first 3 of them). The rest will be available to buy. Each set individually. If the game will be succesfull, I would like to be able to add another sets of cards (with the same system of in-app purchase). I would like to give away codes, that will allow the unlock one set without buying. For promotion purposes.