SD Card Test
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.
Category : Tools
Reviews (28)
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.
doesn't work at finding my external micro sdcard. but a different app found it and let me format it but still cant find a way to get it to mount the dang thing in any file explorer. so this app is just window dressing and tinsel for the built in app and nothing extra. should be labeled as a theme because that's really all it is
App needs to show more info on results page just the card storage capacity and id or name. Other than that it works great. This app tries to check entire device for read/write test, but it can be adjusted. Good work guys keep it up.
It really works! very good basic features like allowing to set up the desired test-file size. it is very helpful to let you know if your microSD is original or NOT. Thanks to the developers.
Doesn't run when minimised - I'm sure it does good things but I, as I'm sure many many others also would, want to start it and then leave it to work in the background as I get on with my day. I don't want to waste battery time on a lit & unlocked screen
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.
I used (or rather tried to use) it on my Samsung Galaxy Tab SM-T320. The app does not display any data in Dashboard below the gauge. It is impossible to select card to test or write/read mode. By default, only the write test on the internal memory runs. So, not useful.
id love to test the paid options, but the free ones are just great. the app is intuitive and the ux is easy to navigate. i wasnt even expecting the visualization tool and thats the thing im liking the most. thank you for this app
It doesn't test the SD Card as Adoptable Storage while other apps support it.
internal and external memory testing simple to configure and effective. I tested other apps with higher punctuation and were a lot less effective and for me confusing.
Good. and very interesting App. my not giving 5 🎖️🎖️🎖️🎖️s because, The lustroutions are not to clear o®
Works perfectly on my SM-G950U device :) WOOT WOOT write: 46 mb/s free internal: 15.15 gb ADs are there and doesn't annoy me. Thanks, Dev, for this "free" version. Keep up the excellent work :)
Worked just fine. I found sd write speed similar to internal, but internal read speed almost 4X faster. Don't understand lots of technical info supplied.
Works and useful. Shows a graph of sir if the card.
I use this app to full fill the internal and external mean about write so the apps not first to experience the storage to reach. Beautifull am learn before forget me. 🌚
Free version will not even do a read/write test at all. App will not allow a demonstration of it actually testing the storage space. not going to spend money on something without knowing if it even works or not--free version certainly does not.
Sd card that good for smart phone is class 2 because of high reading speed for opening/rendering software apps. Higher class is for high end camera with different type of format files system. Class 2 sd card is the best for smartphone android os.
phone crashes, the interface is not intuitive, no explanations provided for the features, offers paid subscription or you must give your data for commercial companies... awful app
Performed the test on a corrupted SD Card. App told me everything was fine. I then perform the test on a SD Card that wasn't there, because I removed it. App once again told me everything was fine.
Crashed in the middle of a test and completely broke my phone. All apps on SD card corrupted. Had to hard reset phone.
Speed test is not accurate. 128GB microSD tested in Amazon Fire HD 10 tablet. Read 49 MB/s Write 71 MB/s Write speed faster than Read??? I don' t think so. Other benchmark apps showed faster Read scores. Don't trust this benchmark app.
Forced portrait mode. Useless for a large laptop tablet. Had a reply from Dev. Apparently there is a setting. This shouldn't be the case. Respect device orientation.
Perfect for internal SD benchmarks but has a lot of bugs when testing external SD cards.
Average is way off. Graph showed mine was about 60Mbs write speed 99 percent of the test, but had a low of 32 and high of 70, so it said my avg was 50! Don't rely on this for Averages!
Right out the gate froze my phone. When started up again wouldn't let me stop it even though I clicked the stop button. Uninstalling right now!
My SD card is half full. Write test failed because the test file is too large. Waste of my time, sorry to say. Thank you for your time.
Does exactly what description says. Unfortunately the basic version didn't do what I needed. Why buy upgraded version when many free apps will do it?
Was able to find options quickly because the application UI is very intuitive. I like it that I can run any of the most important tests necessary to understanding what's going on with the SD card. Unfortunately, the application showed me that I purchased an SD card that is slow. I need to learn how to backup the card and replace it with a faster one. Good job on the application guys (and girls). :).