In 2022, the Avrora: Sleep Booster app was featured as a free download, typically priced around €1.99, to aid with sleep quality. The app utilizes breathing techniques and soundscapes to aid sleep, but current versions operate under a "freemium" model that may convert to a paid subscription after a free trial. For more details, visit App Store . Avrora - Sleep Booster - Betyg och recensioner - App Store