204 reviews for this add-on
  • Doesn't work at all - I click the icon and nothing happens.

    Firefox 62 64 bit Linux, private mode.
  • Sadly, entirely nonfunctional. No context menu, no nothing on Ffx Quantum 61.0.2 64-bit
  • I was using this to check for a test date cancellation to open up at a testing center that is booked up until January. I thought I was going to have to sit at my computer non-stop for days checking and competing with many other students to find an opening. I installed C4C not knowing if it would help or not. Within 45 minutes the song played to notify me and I thought it was a mistake. Nope, grabbed a test spot in 2 weeks, it was unreal. I still can't believe it happened.
  • Saving custom settings renders the addon useless.
  • Mit Version 2.2.2. haben sich Fehler eingeschlichen (z.B. wird das Audio-File nicht mehr in Schleife gespielt - sehr ärgerlich!). Entwickler gibt leider keine Rückmeldung. Ansonsten funktioniert das Addon. Keine Fehlerbehebung in Version 2.2.3.

    Version 2.2.2 introduced some annoying bugs, such as the manually selected audio file that cannot play in a loop anymore. The developer ignored my request. Otherwise the add-on is fine. No bug fixes in version 2.2.3.
  • I don't hear the alert when i'm in a full screen application such as a video game. Permissions sketchy also
  • v2.2.2 has problems with "Animate tab" option. It animates only while notification shows, after pop-up disappears - tab animation stops. It should animate until user opens monitored tab
  • welllllllllllllllll
  • Need the log to file functionality.
  • Love it! works great on laptop...gave it 4 stars because it does not work on Firefox for Android. Can the developer confirm that he knows this and is working on it?
  • Great extension, but it's missing random interval refresh so I can put refresh interval like between 10-15 seconds or 20-30 etc...
  • Check4Change was working better with audio on Firefox 57 but on Firefox 59.0.2. it's not been working properly. No audio to call attention to any change and looks like it's delayed on Firefox 59,0.2. Can you please help resolve this?
  • Doesn't work for sites that take 1-2 seconds to load some elements. I wanted it to check if a parcel had arrived, by checking on changes to the tracking page. Didn't work.
  • It's super intuitive and just the thing I was looking for. Makes my work remarkably easier. Also, very pleasant tune.
  • Aku ingin mempelajari ini lebih lanjut
  • does what its supposed to do. 5 stars.
  • Used to be an awesome add on, I've refrained from updating Firefox and the script to maintain the function to 'log changes to .txt file' I hope you will update this add on to have that again, as that was the feature I used in it.

    Thanks again for writing an awesome extension :)
  • Auch mal eine Bewertung in deutscher Sprache: Bislang war ich sehr zufrieden mit "C4C". Die letzte Version ist aber unübersichtlich und hat seit drei Wochen einen Riesenbug. Genau wie mein Vorschreiber anmerkte, bekomme ich bei einem einzigen Wechsel auf der Website statt einer Mail wie früher, gleich 40-50 Emails. Das geht mal gar nicht! Nervt besonders im Auto wenn die Mails vorgelesen werden. 50x das Gleiche! Support ist sowieso, auch schon früher, unter aller Sau. Keine Antwort auf nichts. Und dafür noch Geld im VIP Staus haben wollen ist ziemlich frech!
  • Email server keeps resending old emails in hundreds. I've notified the programmer several times, no fix yet.
  • everything working perfect. without any complaints. thank you so very much, Ronen!!
  • Hello,

    As another user have mentioned, the addon functionality has changed since the old and trusted 1.98 version. It is no longer possible to track changes, either on a text file or the opened tab. We have simply lost that. it's gone. The new version only alerts you with a sound or notification, but there is no way to track successive changes and the time they occur. Unfortunately, the latest versions of the addon are not useful as the old and stable version. Hope you can fix this. thanks
  • Hello,
    C4C is not the same addon as before it was updated for the new firefox version.
    I use your addon but I found since your last updates the main functionality has been lost. See, I like to keep track of changes and used to save both text files on my hard drive and also have an open tab on my browser that would keep updating whenever a change was found. Now, that is gone and you only get the alert the moment the change happens and if you are not there sitting in front of your pc you will not know exactly when it happened, plus you can not keep track of further changes as it was before, as you will not know when each of the changes happened. Please tell me I am wrong and somehow I am missing something or how to use the updated version of the addon. Thank you
  • Great, does its work.
  • It used to work well. Now keep noticing there is change while there's not.
  • Says there is a change when there is no change