sdspeed is described as 'The only product that measure the read and write rate and testing every bit of your SD memory card you can trust with no "conflict of interest"' and is an app in the os & utilities category. There are 2 alternatives to sdspeed for Mac and Windows. The best sdspeed alternative is H2testw, which is free.
Data integrity test for USB sticks and other media
An advantage over other tools is, that it does not need administrative rights to access the device - but it should not be NTFS formatted, as it does not allow to test everything.
You can FAT32 format hard drive partitions large.
Ever wondered if your SD card is real or fake? Want to know who manufactured it, when, and its serial number or speed? SD Card Insight helps you discover the hidden details that most devices won’t show!
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