Get the Timeless beta

August 2019

After using Timeless myself for weeks and tweaking the experience, it’s finally time to share the first beta version with you. I’m very excited about this. Try Timeless now.

A screenshot of Timeless' setup wizard, showing how to disable the clock

Hiding the clock from the corner of my eye and switching to the less specific indicator of Timeless has allowed me to be more productive while reducing anxiety. I’m curious to hear if it does the same for you.

A screenshot of Timeless' indicator preferences

Download the beta today

After launching the app for the first time, the setup wizard will help you get started by completing the tasks below.

  1. Hide the clock from your menu bar.
  2. Define the indicator ranges.
  3. Submit bug reports, comments and suggestions.
  4. Updates to the beta will be presented to you automatically.

Introducing Pipvid

June 2019

With Pipvid both VLC and QuickTime gain a picture-in-picture mode. Ideal for watching videos in the corner of your screen while you work on something else.

A screenshot of a desktop where Pipvid puts VLC in the bottom right corner

Pipvid automatically enables float-on-top for the player window and can optionally ensure the window video remains visible on every Space. The window snaps to any corner, of any screen attached to your Mac.

You can try Pipvid for free for 10 minutes at a time. Once you’re convinced, you can purchase a license through Gumroad.

Introducing Carbonize

February 2019

A screenshot of the main window of Carbonize

Carbonize generates beautiful images from your source code. Ready to share.

You can get Carbonize today!

Convenient 🍹

Just a single click is all it takes to generate an image like the one on the below.

An image generated by Carbonize

To get your snippet in Carbonize you can select it, then…

  • Drag it onto Carbonize’s Dock icon.
  • Use the Services menu availble in most text editors.
  • Paste it into Carbonize’s editor manually.

A desktop screenshot showing you can drag code onto the Dock icon

Customizable 🎨

Use the editor to customize your images. Pretty much anything can be tweaked.

Change the font, background color, spacing, theme etc.

Your settings are saved between sessions. 💾

All credits for this go to Dawn Labs. 🙌

Built on top of Dawn Labs’ amazing Carbon project 💪

Carbonize uses Carbon for its terrific editor and adds native integration with macOS to support drag-and-drop and easy snippet imports.

Screenshot of running in Safari

Danger Cove and Carbonize are not associated with Dawn Labs in any way.

Press 🌐

More information, screenshots and icons are available in the Press Kit. Get the Press Kit here.

Introducing Relax

November 2018

A vector image showing an avatar unplugging AirPods

Relax automatically mutes your internal speakers and pauses music apps when you disconnect headphones.

You can get Relax today!

Mute automatically 🔇

Disconnecting your headphones or speakers from your Mac automatically selects the Internal Speakers. Any sound that was playing before is now shared with everyone around you.

Your Cyndi Lauper playlist? Yea, that’s no longer a secret.

Rely on Relax 🍹

It monitors your default audio output and takes action when it notices you switch back to your internal speakers. Whether it’s dead batteries, wired or wireless.

Screenshot of a desktop running Relax in the menu bar

Works with wireless and wired headphones 🎧

Even Apple’s AirPods are supported. If any output device gets disconnected Relax has got your back. Battery dies halfway through your Dubstep set? Relax makes sure your disco stays private.

Pause music apps 🎵

Besides muting the volume, Relax can pause playback for some apps.

  • Spotify
  • YouTube playing in Chrome* (experimental)

I’ll be adding more apps to the list every update.

*: Enable “Allow JavaScript from Apple Events” under ViewDeveloper in Chrome.

Screenshot of Relax' app actions settings

Free software 🌴

Relax is free to use. Consider using the Tip Jar in the app to support its development.

Get Relax for free.

A screensot of Relax' tip jar screen

Press 🌐

More information, screenshots and icons are available in the Press Kit. Get the Press Kit here.

Denied is out now!

September 2014

Version 1.0.0 is now available via the Mac App Store!

Starting today, bands you can’t stand will no longer annoy you while listening to Spotify. With Denied you can:

  • Skip songs by artist, title or album.
  • Specify match criteria: starts with, ends with, contains or equals to.
  • Optionally show notifications when a song is skipped.
  • Keep track of how often a rule is used.
  • Quickly suppress rules or temporarily stop skipping entirely.

If you’re a member of the press, have a look at the Press Kit and official Press Release.

Press Release: Danger Cove today released Denied for Mac

September 2014

The Hague, The Netherlands — September 18th 2014 — Danger Cove today released Denied for Mac®. Denied sees what’s playing in the Spotify® desktop app and automatically skips any song that matches customizable rules.

Tracks can be skipped by their artist, title or album, allowing one to enjoy Top 40 playlists, the Christmas season and Spotify® Radio without being confronted with undesirable music.

The flexible rules can also be used to skip over certain types of tracks, such as skits or bonus content on albums. Setting up rules creatively can really improve preprogrammed listening experiences like Spotify® Radio, albums and public playlists.

Denied Features

  • Skip by artist, title or album.
  • Specify match criteria: starts with, ends with, contains or equals to.
  • Optionally show notifications when a song is skipped.
  • Keep track of how often a rule is used.
  • Quickly suppress rules or temporarily stop skipping entirely.

Pricing and Availability

Denied is available on the Mac App Store for just $6.99 / £4.99 / €5,99. Denied is designed for Mac OS X and requires OS X 10.9 or newer.

App Store Link:

A free trial version — limited to three rules — is available from the website.



  • The Spotify desktop app. Support for more music apps and services is planned.
  • Mac OS X 10.9 or newer.
  • A distaste for certain bands, songs or albums.

Additional Information

A limited number of Promotional Codes are available to members of the media. Journalists interested in receiving one should contact Boy van Amstel -

Screenshots, icons and other related media are available for download from here: (Dropbox folder).

About Danger Cove

Danger Cove makes apps that aim to improve productivity, make awesome technology accessible and bring endless joy to everyone who uses them.

Danger Cove has been around since October of 2011 and currently resides in the wonderful city of The Hague in The Netherlands, in an office formerly occupied by a soap vendor. The studio is known to contain Space Invaders and smell very nice.

Danger Cove is run by Boy van Amstel. He posts on Twitter as @boyvanamstel.

Boy van Amstel, Founder
Danger Cove

Twitter: @dangercove

Denied, skip terrible music

September 2014

The wait is over! No longer do you need to listen to artists you can’t stand on Spotify. And even better: you can automatically skip those annoying skits and bonus tracks on otherwise great albums.

Denied for Mac is now available!

Get your copy through the website or the Mac App Store and enjoy Top 40 playlists, the Christmas season and Spotify radio without the songs that you dislike.

Enjoy and let me know what you think on Twitter: @deniedapp.

Denied rules overview

Easily add acknowledgments to your Xcode projects

May 2014

When you’re working on a iOS or OSX app, you’re bound to use a library, framework or other code that was generously shared by other people. The right thing to do (especially when the license requires it!) is to acknowledge that you’re using their work in your app.

There are various ways to go about this, but I’ve just released a script called Acknowledge that will make it very easy. It also works very well with DCOAboutWindow, which I released earlier.

![Acknowledgments] /assets/img/old/content/acknowledge-acknowledgments.jpg)

Acknowledge is a simple bash script that will easily generate a rtf that contains all the acknowledgments for libraries, frameworks and other code you’ve used in your iOS or OSX project.

It’s made to work very well with DCOAboutWindow and Cocoapods. Acknowledge relies on MultiMarkdown by Fletcher Penny.

You can read more about Acknowledge on GitHub, or follow the setup guide below.


Clone the repo, preferably into the root of your Xcode project:

$ git clone

Or if your project is a repo already, add it as a submodule:

$ git submodule add

Install multimarkdown

Follow the guide on Fletcher’s website, or if you’re using homebrew:

$ brew install multimarkdown


Copy acknowledge.cfg.default to acknowledge.cfg:

$ cd Acknowledge
$ cp acknowledge.cfg.default acknowledge.cfg

Customize the paths to multimarkdown and your Pods folder if necessary.

Add acknowledgments

If you use Cocoapods and have your Pods directory setup, you are ready to go. Just run acknowledge.

$ ./acknowledge

Other acknowledgments

Just add a markdown file to the sources directory and Acknowledge will handle the rest. Make sure the extension is .md.


You might’ve notice the 10_ and 20_ prefixes in front of the files in the sources folder. Acknowledge will concatenate the files in order, so just add files and change to number to change the order.

The acknowledgments generated by Cocoapods will always be prepended with 10_.

Potential directory layout

|- Acknowledge/
|   |- acknowledge
|   |- ...
|   |- source/
|   |   |-
|   |   |-
|- Pods/
|   |- Pods-acknowledgements.markdown
|-  |- ...
|- Podfile
|- Coolproject.xcodeproj
|- Coolproject.xcworkspace
|- ...

Test it

Don’t skip this step, you’ll need to output in the next one.

Open a terminal window and run acknowledge once to see if it works, and to generate the initial Acknowledgments.rtf.

$ ./acknowledge

Fix any errors and proceed.

Add it to Xcode

You’ll probably want to show the acknowledgments somewhere in your app (have a look at DCOAboutWindow if you’re working on a Mac app, btw).

Simply add the generated Acknowledgments.rtf file to your project and display it somewhere.

Generate the acknowledgments on each build

Keeping your acknowledgments up to date is easy if you add Acknowledge as a build phase. Here’s how that works:

  1. Open Xcode;
  2. Select your project and open the Build Phases tab;
  3. Click Editor → Add Build Phase → Add Run Script Build Phase;
  4. Name your script something like “Update Acknowledgments” and position it so that it’s above Copy Bundle Resources;
  5. Now add the following code:

cd Acknowledge && ./acknowledge

(Make sure to adapt the paths if the script isn’t located in the default folder.)

It should look something like this:

Acknowledge build phase

That’s it! Just build your project and you’re set.

Glow for updates

October 2013

Everybody knows software updates. A window pops up to notify you an update is available, you accept and a few seconds later you have new features (and less bugs, hopefully).

Automatic software updates are great and generally make everybody’s lives better. As a developer I can be sure most of my customers are using the latest version. As a user you press a single button to update, instead of going to the website, downloading a new package and overwriting the previous version.

All Danger Cove apps (except the ones on the App Store) use Sparkle for automatic updates. Sparkle checks a feed every day and lets you know when a new version is available. Getting that feed online is what I want to talk about today.

Previously I manually edited these feeds and manually wrote the release notes in a text editor. Knowing that I have to look up version numbers, file sizes and sign the update (for security, nobody should be able to release an update in my name). This can take some time.

That’s why I’ve made Glow and if you’re a software developer, it might come in handy for you as well. That’s why I’ve released it on GitHub. Here’s my description of it.

Glow is a tool that generates Sparkle-compatible Appcast update feeds and html release notes for your Mac projects. It’s not a full blown, database driven, multiple project supporting, update releasing laser canon. Rather it’s a clean, easy to use script that will automate 90% of releasing updates to your users.

The GitHub page contains a very detailed walkthrough on how to get started.

Automating the process of creating these updates leaves more time to work on fixing bugs and adding cool new features. Also, I might have some more time to style those release notes :).

Keep track of your web video feeds with Tapetrap

October 2013

If you’re anything like me, you spend quite some time reading, listening to and watching various things online. It would be impossible to organize all this information without the use of a few excellent apps, like Reeder for news and Instacast for podcasts.

Web videos are harder to manage. Despite popular believe, not everything is available on YouTube or Vimeo. In need of a dedicated tool to keep up with online videos, no matter where they’re hosted, I’ve made a brand new app!

Keep track of your web video feeds with Tapetrap

Tapetrap will give you instant access to your favorite webisodes, lets you know when a new item comes out and keeps track of which you’ve seen.

For me, this means I can watch VICE, Zero Punctuation, the AVGN, Conan’s Clueless Gamer, the Spoony Experiment, Gamekings, Christopher Walkenthrough, TED talks and Uitzending Gemist all in one app.

It’s been in development for the past month and, not too tease you too much, is working great! That said, it’s not done yet. I still want to polish a few features before putting out a public version. Until then, subscribe to the mailing list to stay up to date and help testing!

Coucou is now available

April 2013


A little tool that helps us do our jobs more easily. No need to remember/copy-paste ip addresses, just use coucou to connect to your network services.

Are you a web developer? Check out this post about using coucou to streamline local web development.

Available on the Mac App Store

AirTube is now available

February 2013

“How often do you watch Web Videos on sites like YouTube, Vimeo or TED? Wouldn’t it be awesome to just play those videos on your Apple TV and continue using your Mac?”, asking ourselves this question is how we came up with AirTube.

AirTube is now available

We wanted to make an app that would allow you to stream all those MP4 videos you can find on the web today to your Apple TV. Without needing to go into Apple TV apps or getting your iPhone/iPad, but just from your browser on your Mac. It’s so nice to just be able to play that long talk on Vimeo or TED on your Apple TV, by dragging the link onto AirTube.

The link parsing is done by a project called quvi. The Apple TV only works with MP4 streams, so not every site supported by quvi will work with AirTube. We’ve tested them and added a list of sites that work out of the box here.

The app is now available for a reduced (beta) price!

Reign is now available

August 2012

Reign for Spotify

Our app called Reign is “waiting for review” by Apple. Check to see what’s special about this Spotify remote.