Prior to my photography trip to Glacier National Park, I decided to upgrade from my normal remote trigger release and went for the Triggertrap because it had been recommended to me. I loved the Triggertrap and used it frequently as many of our sunrise, sunset and night shoots required exposures longer than 30 seconds, especially with how often I used my ten stop filter.
Anyone who has used a remote is used to the whole routine of pushing and locking the button and then keeping an eye on the time so you know when you have to release the button and stop the exposure. The Triggertrap puts an end to that. Since it hooks up to your phone, it allows you to actually set the time for the exposure and then relax, knowing it will stop when it is supposed to. This was especially nice when I was shooting 3-5 minute exposures at Avalanche Lake. Instead of trying to balance on a few rotten logs, I could set the Triggertrap up and then escape to shore and walk around and eat breakfast (granola bars) while I waited for the exposure to finish.
The Triggertrap also has some really cool extra features. There are a handful of cable release modes. You can use 
just a simple mode where you push the button to trigger the shutter. There is a quick release mode where you touch the button and the shutter releases when you let go of the button. There is a mode where the exposure starts when you press the button and stops when you let go, like a normal remote. There is a mode where the exposure starts when you tap the button and stops when you tap it again. The timed release mode is the one I used almost exclusively as it allows you to set your exposure time. Finally, there is a self time mode that allows you to pick whatever time you want rather than just 2 or 10 seconds before the shutter trips.
While all those modes are great, the Triggertrap really separates itself by offering several timelapse and sensor modes. You have your traditional timelapse, advanced timelapse, timewarp, distancelapse, star trail and bramping modes that all offer different ways to collect your timelapse. On this trip, I used the distancelapse mode while we were driving on the Going to the Sun Road. This road offers amazing views, mountains, glaciers and waterfalls so I thought it would be fun to do a timelapse of the drive. The only problem with a traditional timelapse is that your speed changes a lot during the drive. Because of this, I used the distancelapse and set my camera to take an exposure every 75 meters. This meant we did not have to worry about having 10 images of the same tree if we got stuck behind a slow tour bus!
The Triggertrap also has sensor modes where you can trip the shutter by clapping or making other sounds, by vibration, by motion or by facial recognition.
Finally, the Triggertrap allows you to do long exposure HDR by taking multiple exposures at whatever exposure you set. This is another really cool feature for doing long exposures during sunrise or sunset or any other condition with a high dynamic range.
Overall, I really loved the Triggertrap. By using your phone, it unlocks so much potential and allows you to conveniently get whatever results you want. The only negative thing for me also came from using your phone-a necessary evil I guess, but it was not always convenient to have my phone tethered to my camera and also could have been a disaster during the sunrise shoot where my phone died after apparently not charging the night before. Luckily, I had my back-up remote with me for just such a situation.
Also, be sure to check out the article I published at Improve Photography where I reviewed everything in my camera bag.