SD Card Test

Zoltán Pallagi

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About this app

Use the best SD speed test tool! Test the speed of internal or external storage, sd card!

Highlighted features:
✔ Measure the speed of your external (removable) SD card
✔ Measure the speed of your internal storage or any disks
✔ Read/write tests using several different combinations.
✔ Show storage type: eMMC, UFS 2.0 and 2.1 or higher
✔ Show class: Class 2, Class 4, Class 6, Class 10, UHS-I, UHS-II and UHS-III
✔ Supporting several file systems like ext4, exFAT or FAT/FAT32.
✔ Support portable and adoptable storage as well
✔ Show storage details: free space, total space, mount options, device name

Supported memory cards:
* Basically any sd cards: Micro SD, SDHC and SDXC
* built-in memory (card)


Good to know:
✔ If the sd card is formatted as adoptable storage, the app may unable to access it directly. In that case either move the app to the adoptable storage (change the install storage), or format the storage as portable storage.


Note: if you measure slow speed, this is not the fault of the app. This is the reality of your phone.
Common reasons: fake sd card, slow sd card reader/hardware problems of the phone, software problems.

Easy to use even for beginners. Quick tests.

Ratings and reviews

Works as described, will give a quick test of memory performance. Free version won't work with internal memory configured SD cards. I also compared it against doing it manually with a stop watch and its spot on. The Read performance, is Read to app or RAM memory which is fast than real world, its read to another storage device, which is written to and slows the actual transfer down. Would recommend to anyone wishing to test new SD cards to prove its performance or new hardware.

Got this to make sure my sd cards aren't fakes.. First I tested it with a card that I KNOW is genuine, and it gave me horrible results! Then I shut off my phone, removed the card, and tested it in my laptop with another program. Got the expected results. Then I reinserted it in my phone and turned it back on...... And now this app is also giving me the expected results. IDK what happened with the initial test, but just fyi always doublecheck your work if your results are not as expected!

Great app I bought a Silicon Power SP (Superior Pro) micro sd 256gb actually space 235.5gb for my j7 crown. I tested the read and write. Yes 43 to 44mb/s sequential write testing a 2gb file and about 64mb/s read. Perfect for transferring video files from internal storage and viewing lots of 720p 1080p and 1080p60fps videos on my micro sd. Great app.

What's new

Maintenance fixes