Hi Magesteff. The peep upgrades are available in all versions of the game.

To access the "Upgrade Me!" section for each of your little people:
1) Click your little person to select them, then click their portrait (picture) near the bottom-left of the game play area, opening their "Details" screen.
2) Click the purple "badge" labeled "Upgrade Me" at the upper-left corner on the Details screen. You will now see all the upgrades that are available for that little person. You may see checkmarks on services that you did not purchase. Don't worry, these checkmarks just mean your little person does not need these services at this time.
3) Choose the upgrade you want, click "OK' to dismiss the confirmation, then click "Done" to return back to the game play area. Voila!