LagFix (fstrim) Premium

PdtS

- March 3, 2013

Everyone

Tools

( 1,065)

LagFix (fstrim) Premium- screenshot thumbnail

Description

★ THIS APP REQUIRES ROOT! ★

★ WARNING! ★
Read FAQ before using! http://forum.xda-developers.com/showpost.php?p=37029420&postcount=122

Please try FREE version before buying: https://play.google.com/store/apps/details?id=com.grilledmonkey.lagfix
PREMIUM version adds an option to schedule regular data trim automatically – no need to launch the app every time.

Attention!
This app should only be used by ADVANCED users! If you do not understand what it does - DO NOT USE IT! You can find fstrim() man in Google and more information on XDA - http://forum.xda-developers.com/showthread.php?t=2104326. RTFM before asking any questions or rating this app bad!

Some Android users suffer from poor performance after some days/weeks of heavy usage. This is due to a well-known TRIM bug affecting these devices (users report Nexus devices, Samsung Galaxy S3 and HTC One X devices are affected). Kernels with -discard mount option are NOT affected!

The source of the problem is that internal storage is not properly TRIMmed when needed. You can find lots of information on XDA - http://forum.xda-developers.com/showthread.php?t=1971852 and http://forum.xda-developers.com/showthread.php?t=1929021 It is also well-known fact that running fstrim Linux tool from time to time fixes the issue until internal memory runs out of free blocks. Other solutions like mounting with -discard or disabling fsync may be slow or dangerous.

LagFix is a user-friendly implementation of fstrim utility. It allows you to select which partitions to trim (you should leave defaults unless you know what you are doing) and run the process easily. Scheduled auto-trim is also available.

Please note that fstrim output depends on kernel and device. It works fine unless you see errors. You might see big amounts of bytes, zero amount or repeating amount. All are fine! Read fstrim manual to understand why all these outputs are valid.

Keep in mind that this app is designed for older devices and OS versions; if you device is not affected by trimming, it might already be implemented in the system.

Reviews

4.4

1,065 total

5 773

4 134

3 51

2 31

1 76

Mark Evans

Not working on 2012 Nexus 7 Lollipop? I have been using this for awhile on the Nexus 7 with KitKat and it works great. Just installed and rooted Lollipop but can't run trim. Maybe it's no longer needed? Anyway, I'll check back to see if it gets an update for Lollipop compatibility.

Mike Watt

Made my phone like new again! Gnex owner suffering this issue for a few months now. Finally decided to investigate and found this gem. Yes I could probably setup a cronjob myself but what's a dollar for the convenience?

Keith Hall

Saves reformatting regularly the latest version of Android supposedly does this by default, but my device was lagging massively after nearly running out of storage, but this fixed it - highly recommend. Note if it says trim not supported the first time you use it (because it doesn't wait for root user confirmation), try clearing the app data and restarting the app

Greg G

Stopped working Used to work on this device, now with recent software updates it hasn't been and I have been using another third party app. I know that the system is supposed to do it on its own ever since 4.3 but these apps that run trim commands come in handy when doing large file operations and you don't want to wait for your device to decide it is ready to do maintenance. Not rating lower because it still works on another of my devices, just frustrated that I had to switch apps on this device.

Mark Smith

Nexus 7 (2012) My 2012 Nexus 7 had become so slow it was unbearable. Having had it previously rooted until 4.4.2 update the bootloader was already unlocked so was able to re-root without loosing any settings or data. That done installed this little app. Simple to use and in my case quick too. Took only a few seconds and made my Nexus usable again. Big improvement, long may it last! Happy days :-)

James M. Woodward

Good tool, could use some clean up. Trim is simple enough, however it seems that for the paid version a simple feature could be added for functionality at least. E.g. Option to reboot after scheduled trim. It also seems that the UI is lacking in updating when it is working as it always says "Idle..." Even after issuing the fstrim command.

User reviews

Mark Evans November 15, 2014

Mike Watt March 21, 2013

Keith Hall August 20, 2014

Greg G August 31, 2016

Mark Smith April 20, 2014

James M. Woodward June 24, 2013

Terry Meyers July 14, 2013

This just became my favorite maintenance app! Used this on both my Tablet S and on my Galaxy Nexus. Both devices were in line for yet another reflash; in the Tablet's case, I was looking for its replacement due to the long load times for everything. Both devices are now behaving like brand new, fresh out of the box, fully charged androids that made me fall in love with the OS. Awesome and well done. I honestly can't think of a single change to recommend, so five stars from me!

Vyas Chady August 18, 2015

When I like an app, I pay for their premium version. I installed it on my phone first, the easiest device that is always in my pocket. It worked fantastic, phone appeared like new, smooth and butter soft. So immediately paid for premium version, then would be installing on the rest of the devices. My critical one is the android TV box, love it but lags. Problem is cannot get a custom recovery for it, tried this app, and black screen, luckily it worked afterwards.

Alasdair McNeill April 10, 2014

Worth the money I have an Asus Transformer tf700t and had a lot of problems with lagging. This program largely reduced the lagging. By buying the premium version scheduling is possible so my ad is constantly trimmed without me interacting.

A Google User April 20, 2013

Galaxy S3 freeze fix? I read on xda that this app could be a fix for the galaxy s3 (i9300) random freeze bug. I'm running Cyanogenmod 10.1 nighties and suffering from random freezing. After running this app I went 24 hours without a freeze, had one freeze, ran the app again and running smooth again. Fingers crossed, but this app appears to have helped...

Devin Crowley September 28, 2013

Saved my tablet My Nexus 10 slowed down to the point that it wouldn't even load the home screen. I installed the app on my nexus 10 remotely and got it to run. My tablet feels brand new. Absolutely saved me. Awesome!

Reza Patel December 22, 2015

Hasn't been updated for years! Doesn't work anymore. Used to work great on 5.0 but not on 5.1.1 and the developer doesn't seem to think it's important to update something that users purchased as a premium app. The trim does work with other apps available on market, so it's just the lack of interest from the developer updating the app.

Sahasranshu Panda September 30, 2013

Great for older ROMs but needs finer scheduling... My phone seems to pretty badly if fstrim is not run frequently enough, could you allow the scheduler to run more than once a day?

Nick Sutrich December 27, 2013

Amazing!! Any issues I had with lag, including weird Bluetooth audio skipping and choppiness were fixed by running this. Thanks for an excellent app! Scheduler included in the premium version keeps me from having to remember to run it. Great job!

Maxime Sioui October 28, 2013

Perfect ! My Galaxy Nexus went unbearable after I transferred music on it. After some research, I installed LagFix and my problem is gone. Thank you very much !

David Vann May 17, 2013

Decent If you are having problems: the first run the app asks for superuser permissions but apparently doesn't wait to run fstrim, so it fails because it doesn't have permissions. The app remembers the failure and blocks you from trying again (WTF?), so you must clear the data (Settings->Apps->Lagfix). Oh, and if you use one-time superuser permissions it will always fail. In summary: first run, grant permissions either permanently or for a few minutes if you don't trust it; then clear app data and run again.

Chad Hill October 5, 2013

Huge help! Droid razr maxx. I think androids are engineered to die after a year. Factory reset and my phone was still junk. Root and this app gave a big improvement. I wish the schedule would allow multiple auto runs a day.

Gabor Csekey April 4, 2013

Great with a small glitch. On CM 10.1 it fails to run initially due to a problem with the new superuser app(it stated that my gnex is unsupported). I deleted the data of the Lagfix app, and after that it runs perfectly, without any problems whatsoever.

Douglas Brooks June 29, 2013

I can say safely That after running this application I did gain a boost of performance. Thank you. I bought the app outright without even testing the lite version because of other reviewers and their positive responses.

September 30, 2013

Amazing! Rooted my phone just to use this app. If you are familiar with TRIM on SSD drives that is basically what this is - garbage collection for your phone's storage. After running this app my nearly two year old Verizon Galaxy Nexus went from being a laggy mess to performing like new.

Ben Miller June 26, 2013

Useful Make sure this will work on your device before buying as it will only work on certain devices. I have an N7 so it works great for me. Not sure if it's possible, but a widget with a configurable one tap run would be great for ad hoc trims. Great work dev and thanks.

Gytole Otto March 14, 2015

Lollipop Support? Trimmer Fstrim has it... I've been using this since it came out, now lollipop has dropped and no support. A dollar well spent for what I get for free with Trimmer. Thanks.

Crickett Heath December 15, 2013

It Works ! The One V's browser & Facebook lags terribly no matter what ROM you run. This helps a lot! My browser & Facebook loads in a respectable fashion now. No hangs! Running Slim Bean rom w/ Apex.

Jeff Savage May 12, 2013

Works Great. Nexus 7 Carbon Nightly 5/11 If you have less than 3 gb remaining on your device, or have heavily used it for weeks, you might notice a major slowdown in I/O speeds (also can include apps loading slowly). This program fixed my problem. not 100% sure if this is related, but before running this play would only let me download about 4-8 kbps with the tab on top of the router and this program fixes this too

Nikhil Apte March 4, 2013

Life saver! Got a Galaxy Nexus with the eMMMC bug. Thanks for making the lag go away forever! And for the sale. :)

Matthew Gabeler-Lee October 30, 2013

Install Glitch But Otherwise Awesome I hit a glitch after the install where the tool it runs was not installed correctly. But, after fixing that, the tool almost totally removed the sometimes intolerable lag I was experiencing at times.

Ega Rama June 25, 2013

Fixed my GNex! This app really saved my laggy GNex, now it runs like new. Just little advise, if lagfix doesn't run (superuser denied) you need to change the permission manually using file manager.

May 8, 2013

Definitely works :) Really does speed up memory access, works great on my sgs3. Get the premium version to schedule trimming.

Dragoș Dumitriu January 18, 2014

Works great, if your phone needs it You can schedule a recurrent FS trim, so you don't have to worry about it.

niobe trinity August 31, 2013

Priceless, 0.99¢ a steal I constantly install new apps (currently near 400). 1st time I used lag fix, I noticed my Note 2 was snappy again. Until the Note 2 gets 4.3 ota, lagfix is the answer

Chris Peeraer July 3, 2013

Works like a charm! Wow. I was struggling a LOT with the performance of my Galaxy Nexus (i9250), it was close to being completely unusable: needed to wait a minute before it reacted, downloading little apps (like this one) often took 10 minutes or more, even making a phonecall took me several minutes because of the lagginess. I was close to throwing it to the floor. Then came this app. Ran it once and *POOF* smooth as butter again! Thanks, you just saved me a couple hundreds! :-)

Pascal Door August 9, 2015

Scaming on scam Nexus 7 2012 is a laging scam by Asus and Google. This is an app that dont solves lag. Perfect.

Marvin Miller September 8, 2015

Unsupported - No longer seems to work I don't think this works on any recent Android release. It's been years since this app worked.

Chan Yew Yen July 29, 2013

Removed lag, but no longer needed for 4.3 Seems Android 4.3 finally implemented fstrim, so no longer need a separate app for this. Good run while it lasted.

Bruno P March 22, 2013

Worked perfect for Galaxy I9300 before lagfix secuential read was 0.6mb/s, after lagfix is 9.25mb/s, the phone was with lag and now it's like new!. awesome app

Vasilis Stathopoulos June 23, 2013

I CANNOT BELIEVE IT BUT THIS APP HAS SAVED MY TAB AND PHONE!!! IT REALLY WORKS WAY BETTER THAN DESCRIBED...STILL CANNOT BELIEVE HOW MY DEVICES HAVE TRANSFORMED WITH THIS APP.

King Markus The First December 8, 2013

My phones like new again My galaxy nexus was almost unbearable to use. Apps took forever to open and even my keyboard hung while texting. I wanted to blame updates but this app proved otherwise. Not only is my phone fast again (for a galaxy nexus) but... MY BATTERY LIFE DOUBLED!! Easy to use just wish there was an indicator to say it's working while it's doing its thing. Only takes a few minutes but when your used to your phone hanging all the time, the first use leaves you wanting to abort and reboot. Highly recommended!

Olen Myhre September 5, 2013

Razr Maxx 4.2 Issue Will not run on 4.2. I get an error message when I try to run it for the first time saying it doesn't have access to /data & /cache.

Wim Frencken December 10, 2014

Fake app Don't download Doesn't work in android lollipop

Rik Dunphy August 27, 2013

productive once again Fixed a lag issue on my CM10.1 Nook HD+. Speeds up keyboard, app switching, new tabs in chrome and much more... Now I can use my tablet as I want.