During this time, the pregnant Sim's belly grows until delivery at the end of the 6 days. Then, with an update, released in early summer 2018, a pregnant Sim can now become incitement, in 2 different ways: The first lasts 6 human days, and is the most expensive. After that is done, you need to wait 24 hours for the stork for the birth of the infant Sim.

Infant: To give birth to an infant Sim, just buy a crib from the catalog, use it, and pay a price of 3 Lifestyle Points or a set price in Simoleons (if you have already finished the Life Dreams and Legacies quest, or if it's your first infant Sim).

The various characteristics for each stage are these: Each Sim can advance in stage (therefore in age) via a birthday cake, an item that is obtained for the price of five life points after a day of work on a Sim in the oven. There are six life stages and they differ from each other both in terms of the graphic aspect of the Sim and the actions it can perform. The game features three types of currency: Simoleons, Lifestyle Points, and Social Points, the latter being obtainable by spending real currency or earning it in-game. Sims must bake a cake to age until completion of a certain quota of discovery quests. In the game, there are 'quests' that players are required to complete as well as optional quests ('discovery quests') that they may choose to pursue.

However, if the player buys items from the online store, they become a VIP that will allow them to increase the number of Sims they can have in their town. Families of Sims can have children provided there is one adult Sim there is a limit on the amount of allowable couples due to a limit on the people in the player's town. Players can progress through 55 levels to unlock content (such as furniture for the Sims’ houses) that can be purchased with the virtual currencies previously mentioned.

All actions must be instructed by players, unlike in the Windows version, where Sims have some degree of autonomy. The game runs in real-time, and takes real time to complete actions. Players can control their Sims to satisfy their wishes, and let them complete different kinds of actions to gain Simoleons, Lifestyle Points, and Social Points (all three currencies in the game). In The Sims FreePlay, players 'build' and design houses and customize and create (a maximum of 34) virtual people called Sims.

Sims 4 monster under the bed