This app provides essential offline information and real-time alerts for emergencies. Access a vast offline database of knowledge and stay informed about potential threats to ensure you are prepared for any disaster.






10+ similar apps compared and reviewed
Whether you want more options like Shielding Tester or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.






This app provides essential offline information and real-time alerts for emergencies. Access a vast offline database of knowledge and stay informed about potential threats to ensure you are prepared for any disaster.




This utility app helps engineers and students calculate and convert RF-specific values like impedance, wavelength, and return loss. It also includes a calculator for comparing RF cables and assemblies, and provides access to product catalogs and branch information.




This utility app verifies the effectiveness of Faraday bags by detecting signal leaks from your device. It helps ensure your device is isolated from external communication networks for privacy, security, or forensic purposes.


This utility app simplifies the process of opting out of commercial surveillance by allowing users to easily rename their devices with a specific prefix. It provides a universal and decentralized mechanism to signal a desire not to have data sold or shared, enhancing user privacy across various connected devices.


This application helps detect Wi-Fi jamming and provides notifications for jamming and offline/online status changes. Users can easily set up the app and share alerts with others.




Detect electromagnetic fields (EMF) using your device's sensors. Get alerted to high magnetic fields and potential radiation sources in your home. Useful for identifying hidden emitters and understanding your environment.


Connect your RigExpert antenna analyzer to your smartphone for detailed antenna system analysis. Visualize SWR and Smith charts, and view all parameters in one place.


This application measures 5G EMF radiation using your device's sensors and magnetometer. It offers an easy-to-use interface with a color-coded system for readings and supports Apple Watch integration.


This app provides a user-friendly interface to control RF signal generator devices. It allows precise customization of signal frequency and power output across multiple channels via a Bluetooth connection.