True SD Card Capacity & Speed
This app performs an endurance test to verify whether your SD card is genuine and reliable or a counterfeit with significantly less storage than claimed. It fills your card with specially designed files and then checks their integrity to ensure data can be written and read back accurately.
In addition to storage validation, the app measures read and write speeds, providing a comprehensive assessment of your card’s performance. While the interface prioritizes functionality over aesthetics, the app remains user-friendly and straightforward.
To truly confirm your card’s advertised capacity, it must be filled completely—a process that typically takes under an hour but may vary based on the card’s size and speed. The peace of mind gained is well worth the wait, as there are no shortcuts to reliable testing.
You can also use the app to test your phone’s internal storage. With USB-OTG support, it may also work with thumb drives, depending on your device’s capabilities.
Note: The app is available in English only. The default settings are optimized for most users, so you can simply proceed to "start test" for immediate use.
Keywords: SD card, storage test, read speed, write speed, counterfeit detection
