A1 SD Bench

A1 SD Bench Free App

Rated 4.25/5 (10,071) —  Free Android application by a1dev.com

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About A1 SD Bench

*** IMPORTANT - If your SD card is not detected, please send us your model and SD card location, before giving a rating. We can not test this app on all devices ***

Use A1 SD Bench - free tool to benchmark your phone & tablet SD card, RAM and memory, to test IO read / write speed (Quick, Long, Random I/O and Accurate) and check media performance, and compare your benchmark results online.

Features:
★ Free
★ Four benchmark modes - Quick, Longer, Accurate and Random I/O
★ Built-in compare results online (anonymous)
★ Built-in view statistics online
★ SD card speed test, or multiple SD cards
★ Speed test any Android storage including RAM and USB
★ Nice looking, clean, fast, responsive & intuitive UI (User Interface)
★ Measure both read and write speeds to find out how fast is your SD card
★ Quick and Accurate benchmark (to reduce caching effects)
★ Check your speed-test results with other devices
★ Speed categories: Class 2, Class 4, Class 6, Class 10, UHS-I, UHS-II and UHS-III
★ Custom location option to test any device directory
★ Shows total and free memory for all media including RAM

Supported devices:
• Internal memory
• Internal SD cards
• External SD cards
• System RAM (Random access memory)
• USB flash drive (including, NAND flash, USB 1.0, USB 2.0, USB 3.0)
• Up to 6 USB flash drives (connected simultaneously via USB hub)
• USB HDD (Hard drives)

Supported memory cards:
• SD Cards
• Micro SD
• Micro SDHC
• Micro SDXC
• Phone's built-in memory (card)

Notes:
• Problem? Please, send us your feedback using Send Feedback feature from the Settings screen, or http://a1dev.com/feedback/
• We can not test all Android devices, so if your device's memory / SD card / USB is not detected correctly, use Send Feedback feature from the Settings screen, specifying path to your storage, e.g. /mnt/sdcard/, /mnt/usb_drive;
• NTFS and other non-native file systems is supported as far as your Android device is compatible with a such FS.
• Your device needs enough free (100 MB and up, depending on media speed, and up to few GB if using longer test option) space for benchmarks to work;
• More: http://a1dev.com/sd-bench/notes/

Contact:
• From the application itself
• http://a1dev.com/feedback/

Social:
• http://twitter.com/A1_dev
• http://facebook.com/A1dev.apps
• Google+: http://a1dev.com/g+

More info on permissions:
• "Storage" & "Media" is used to benchmark your device storage, SD cards and USB attached drives.
• "Internet" is used to access and submit online scores and for anonymous usage statistics (both can be enabled and disabled).

How to Download / Install

Download and install A1 SD Bench version 2.4.0 on your Android device!
Downloaded 1,000,000+ times, content rating: Everyone
Android package: com.a1dev.sdbench, download A1 SD Bench.apk

All Application Badges

Good rating
Free
downl.
Android
2.3+
Bug
buster
For everyone
Android app

App History & Updates

What's Changed
v2.4.0
• New: Option to hide ADs
• Improved: More SD card / USB device locations
• Improved: More devices are recognized
v2.3.0
• Changed: Now requires Android 2.3+
• Improved: Added TwinMOS cards
More downloads  A1 SD Bench reached 1 000 000 - 5 000 000 downloads
More downloads  A1 SD Bench reached 500 000 - 1 000 000 downloads
Version update A1 SD Bench was updated to version 2.4.0
Version update A1 SD Bench was updated to version 2.3.0

What are users saying about A1 SD Bench

Z70%
by Z####:

OK it test speed of my storage - give 3 stars. In my i9100 with 5.1 omni ROM I got SD cards other way - around internal SD card is Sandisk 64GB, but external is a partition in eMMC. 1. To improve correct issues like above. 2. Don't know is it even possible. Show actual chip name to see witch SD card is tested.

Z70%
by Z####:

Program is great for testing new setups and Android tweaks with apps like L speed. I was able to properly evaluate my new and old microsd cards with this app as well as built in storage. RAM test feature proved great for evaluating Android kernel tweaks.

Z70%
by Z####:

Very good app for benchmarking the storage or memory of your device. My Nexus 7 2013 achieved 12mb/s write and 54mb/s read on its internal storage, which ain't bad considering its three years old. The only disappointment I have with the app is that there are ads. Other than that I highly recommend this app.

Z70%
by Z####:

First thing on Nexus7: First test on the list: Test SD Memory. When tablet switches from portrait to landscape mode, the test is unintentionally canceled. Not only that; the test has disappeared. Permanently! The only way to get it back is to uninstall and reinstall the app. Try again. the test is long. It slips into landscape mode again. Ditto! To say this app is not ready for primetime is an understatement! With unpredictable behavior like this, I am afraid that this program may destroy my data! TEST IT!!

Z70%
by Z####:

Does it really. Need to write dummy dumps to fill the entire. To test the speed. And then send log files to devs Ridiculous. i think not. Nope dod deleted filed

Z70%
by Z####:

This app is great and confirms the SD card I got is a poor performer and probably a fake one masquerading as Sandisk. My card is slow rendering mapping data on screen. Now I know that a better quality genuine micro SD card is on order.

Z70%
by Z####:

The test results vary with different tests at different times. Sometimes you would have w/speed of 22mb/sec and sometimes merely 2mb/sec. It differs a lot. This is app is not a reliable tool to check your SD Card. Go for a reliable app. BEWARE of this highly rated-not-so-helpful app.

Z70%
by Z####:

Gives me the data I want to know across my devices and cards. Keep in mind people, not all devices are capable of the speeds your SD card suports!

Z70%
by Z####:

Invaluable if you are thinking of buying sd cards that claim to be fast. Great way to check them. Bonus is all the other info about every bit if storage on your phone.

Z70%
by Z####:

Does what it says. Plus, only small ads (another app had obnoxious full-screen ads that covered up results :P) that can even be temporarily disabled. Thank you! It would be nice if it identified the SD card model, like SD Insight, and compared to online database. Minor detail.

Z70%
by Z####:

Not completely accurate my SanDisk Extreme gets 49MBs read and 26 write. Same card on PC Crystal Mark gets 95R & 70W. Samsung EVOs suck on any platform for their write speed. EVO gets 10.5MBs write on USB3.0 using Crystal Mark x64

F70%
by F####:

Absolutely brilliant app. Does just what I expected, in an easy to use fashion. If I had to complain about something, it could use a material design makeover, but that isn't enough to stop the app deserving 5 stars.

A70%
by A####:

I have an Evo Samsung, I'm getting a card read of 2 read and 7 write and the card is a class 10 48mbs 64gb in a Galaxy Tab Pro, 2.3ghz quad-core. The internals clocked in at 143mbs read. I'm wondering if my card is fake now.

Z70%
by Z####:

My 3 stars is for the lack of USB support. I have 4, and none will register they all fail on step two.

V70%
by V####:

Note 4 (N910F) EACESS denied, unable to test SD Card (32GB Verbatim UHS III). Error says that the file is not yet ready. I'll gladly fix the rating to five stars if the problem is resolved. Android version 5.1.1 (most likely OS limitation issue).

A70%
by A####:

This new version is very good, giving an interesting look into an under rated phone. Internal speeds are greater than expected given ratings on Amazon. Com. Looking forward to my review. We'll done. Worthy of a donation! Cheers!! The insistence upon /sd2/ path is erronious because the internal, undemountable flash for media is capable of testing, sorry, no longer useful. Uninstalled.

K70%
by K####:

You want me to rate? Here have -1- star for spamming. I'll rate when I feel like it. Also not okay with dumb ads on the bottom of the application.

Z70%
by Z####:

This application barely does it's job, first of the external storage read/write speeds are limited by your device's read/write speed, for instance I got different readings for the same micro sd card on 3 different devices, I did multiple tests on each device as to rule out any mistakes, that's not all if you rotate the screen while it's doing any of the tests it will be cancelled, this app needs work.

Z70%
by Z####:

Just wanted an easy reading. I ended up being in afrikkin social news feed for sd cards. Still couldn't find my results in the results tab. Uninstalling thanks

H70%
by H####:

Uninstalling immediately

F70%
by F####:

My phone Micromax Canvas Nitro 4G costing almost $118 with snapdragon 615 got 84.11mb/s for read and 28.67mb/s for write on my internal ROM and RAM speed was 3783.29 mb/s ...... Samsung class 10 sd card scored 27.8mb/s R and 14.31 mb/s for W. The phone is only 1 year old though

Z70%
by Z####:

We bought 4 SD cards and 3 of them failed within a few days this software confirmed the failure but did not predict the failure.

Z70%
by Z####:

Ran tests and clearly identified issues with what should have been a pro card but obviously was not. This and SD Insight are must haves in identifying fakes.

G70%
by G####:

After benchmark its got stucked.and my phone says sd card dameged. Lost my data very bad application

S70%
by S####:

Of course the phone hardware adds limits but it is really interesting how most "class 10" devices should say "class 6" but most uhs-3 cards will actually always rate over 30 reliably.

X70%
by X####:

Not completely accurate my SanDisk Extreme gets 49MBs read and 26 write. Same card on PC Crystal Mark gets 95R & 70W. Samsung EVOs suck on any platform for their write speed. EVO gets 10.5MBs write on USB3.0 using Crystal Mark x64

X70%
by X####:

Just wanted an easy reading. I ended up being in afrikkin social news feed for sd cards. Still couldn't find my results in the results tab. Uninstalling thanks

X70%
by X####:

It seems accurate. It is consistent with some test I did with the "dd" Linux command. 4 stars because the reboot option is not very convenient. It may give wrong results if one doesn't wait long enough until all apps are loaded after boot.

G70%
by G####:

This app asked me to rate it while it was in the middle of a long benchmark. Upon doing so it stopped the benchmark thus wasting my time.

X70%
by X####:

Submit your scores blah, but can't see my OWN scores anywhere? Most stupid app ever.

X70%
by X####:

Found out my Huawei benches better than Samsung.....didn't expect that. But I did see that most Huawei phones generally do.

Q70%
by Q####:

Helped me find out my Ebay SD card was a fake!! Thanks!

I70%
by I####:

It saids when i test my sd card that due to the madia not being ready the file for the second step could not be found.....yet the other type of test work fine. Why is that?

X70%
by X####:

showed interesting data. Just don't cheat yourself by selecting the quick test.

X70%
by X####:

Handy being able to see others people's results for the same device. My results showed the write speed was only 7.5MB/s on a microsSD class 10 card (spec is minimum write speed 10MB/s). Others had achieved W:46MB/s, so I know what the phone should manage. It is a great pity the app doesn't read the card details and show the make; size; etc. on the results. That would be an ideal way to find the card most compatible with your device.

L70%
by L####:

Just a speed tester. No accuracy or condition of partition tests. Basically waste of time

X70%
by X####:

I don't know about the accuracy but I like this app. I like the different choices to benchmark different cards. I miss a feature to save all the results to a file, or the ability to see my previous results along with performed tests though (without going on the Internet).

X70%
by X####:

As far as tests work, there is not enough settings to inform the application which partition belongs where (internal vs external).

X70%
by X####:

Does exactly what the name suggests. IDs your SD card and puts the card thru its paces on several different levels. A nifty little utility to wring out your card's details and read/write performance.

X70%
by X####:

Benchmark is decent compared to pc software it shows more speed and sometimes slow read & write speed


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Rating Distribution

RATING
4.35
10,071 users

5

4

3

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1