NoSim (NOSIM) is an app for purchasing and activating eSIM data plans as a practical alternative to physical SIM cards while traveling. It enables users to download and install digital data packages so they can get connected upon arrival without relying on expensive roaming. The app description highlights access to plans that work across 200+ countries/regions, and it provides a support contact via email. In Google Play’s data safety section, the developer states that no data is collected and no data is shared with third parties, as shown on the store listing.