Do I need to purchase the entire nfant® Thrive System to use the nfant Bottle?

Yes. Although we sell individual nfant Thrive Bottles, these are intended as replacements or extras. nfant® Thrive Bottle is a complete starter kit and includes all of the components you need: Two nfant Bottles, a Bottle Sensor, charger and assortment of Control Flow nipples at various flow rates. Additionally, you will need to download the nfant® Tracker App on the Apple App Store or Google Play.