Baby swings and baby bouncers are almost same. These devices are usually portable, light, and portable so that you can take them anywhere with you. The only prime difference is in movement. As the name suggests, swings can move both in back and forth and side by side (manually or motorized). But the bouncers can move only Up and down with the Spring action. Both of them are great substitute for a stroller when you don't want to run after it.