A simple HTML5 Pomodoro Timer for FreeCodeCamp's Front End Track
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A pomodoro timer inspired by FreeCodeCamp's Front End course.

Check it out here!

User Stories (from FreeCodeCamp):

  • I can start a 25 minute pomodoro, and the timer will go off once 25 minutes has elapsed.
  • I can reset the clock for my next pomodoro.
  • I can customize the length of each pomodoro.


  • Adjustable, accurate, Pomodoro Timer!
  • Keyboard Accessibility!
  • A Settings Menu, that can open and close!
  • Three default alarm sounds and
  • Choose one of your own MP3 files for the alarm!
  • Mute the alarm sound, if you don't like it!
  • Optional Clock Tick sound!
  • Volume Control!
  • Desktop Notifications!


  • As far as I am aware it doesn't work on mobile devices. I only have Android devices to test with, so I can't say for sure about IOS
  • The Settings Menu is only partly responsive
  • I've been told it didn't work on one Macintosh computer using Chrome. Unfortunately I cannot test this for myself, and wasn't able to figure out what the problem may be.

General Comments:

  1. I started this project trying to learn (arguably) too many new things at once. This is my first time using: WebPack, Babel, Modular design, many (new to me) ES6 features, and git history management. I did learn a lot, but I spent a lot of time stuck because of some problem with a tool (or my understanding of it), and it was very hard to maintain motivation.

  2. At the start I was also writing unit tests with Jest, and trying to follow TDD principles. Unfortunately it was too much at once, and I struggled trying to write code (period) with all the new tools and features I was using let alone code that was testable, or the tests for that code. After a week I decided to focus on learning how to write code that worked, and I dropped testing for the duration of the project. As a point of interest: There were many occasions after this were I found myself dealing with a bug that would have been trivial to sort out if I had been writing proper tests, and as such I have a renewed understanding of, and appreciation for, the value of writing tests, and intend to dedicate my next project solely to leraning how to write unit tests, and integrating them into my workflow. (I have left the test files in the repo for posterity and as a warning to others)

  3. I had intended to have the option to save setting presets, and had a working (if basic) save function working via localstorage, but removed that code in order to try and implement a more full-featured version using IndexedDB (via localForage). Unfortunately, this turned out to be beyond me at this point. I struggled a great deal working with Promises, never managed to make it work even as well as the previous version, and ultimately lost all motivation to work on the project as a result. In order to preserve my mental well-being I decided to drop the storage functionality entirely, polish up the rest of the project, and move on. Both versions of the storage code can still be found in the commit history if anyone wants to take a look.

  4. Overall: This project has been an immense success. I am now familiar with new (to me) developement tools and methodologies. I feel more confident in my ability to plan, write, and refactor code. A less concrete, but perhaps more important, note: I am better at 'seeing the bigger picture'. I can now visualize and understand the code I read and write on a larger scale, making it possible to plan and implement designs and features with more intentionality, rather than just writing stuff that seems like it might work and hoping.


The resources I used were provided with, great generosity, by:

Analog Watch Alarm by Daniel Simion, Found at SoundBible. Attribution 3.0 Unported (CC BY 3.0).

Gong by cdiupe, found at Freesound.org. CC0 1.0 Universal (CC0 1.0).

Birdsong May by juskiddink, found at Freesound.org. Attribution 3.0 Unported (CC BY 3.0). This file was modified by truncating it, and converting it to MP3.

Alarm Clock Ticking by joedeshon, found at Freesound.org. Attribution 3.0 Unported (CC BY 3.0). This file was modified by truncating it.

Stopwatch icon by ngamlerdlek.design, found at The Noun Project. Attribution 3.0 United States (CC BY 3.0 US).

I have tried to abide by all the requirements of the appropriate licenses, if I have made any mistakes or oversights I will be very happy to correct them.