I used the 7sage proctor app (android version) recently to do a PT and it's great!
I kept thinking "aw, I don't want to be doing this, it's not that important this early in my studying, I'll just abort and make this a casual practice", but the app is unrelenting. The announcer comes on and tells you to turn the page and get going and it motivated me to keep doing just one more section instead of giving up and soon they were all done!
Of course, I did this after having played around with the settings and voices on the app the previous day. I failed to notice I had set the elapsed time for the section to 28 minutes instead of 35! The app is very sneaky -- when you have it display an image of the analog watch face, the hands on the watch face even move faster so that it looks like you spend 35 minutes! I was relying on that watch face since the watch I ordered for the LSAT hasn't arrived yet. So it wasn't until the break that I noticed I had set the app to 28 minutes!
No wonder I had so much trouble completing the sections and even had to skip an entire logic game! And just a small brag: found out later that even with limiting myself to 28-minutes for 3 of the sections I still scored a 166 pre-BR. I'm shooting for 170s. LR sections are my forte: my pre-BR score was only -1 on both (including the one done in only 28 min). So my focus will be on LG (fun!) and RC (not so fun).
Not all the Staedtler pencils are extruded, of course. This is the Wopex extruded pencil I like.
I live near a Maido store so it's easy to test out and buy single pencils. And just like this guy at Pencil Revolution I wouldn't have thought I'd like an extruded pencil. I was surprised by how good it felt in my hand when I picked one up at Maido. They had other Staedlter and Mitsubishi pencils there, as well as the entire Blackwing line, the "limited" edition volume pencils included.
If you like to sharpen to long points, the Carl Angel style sharpeners are great. Work fast, center the pencil so it's not cut at an angle, and stop sharpening automatically. Nice metal body construction. They do make teeth marks on the pencil, though.
But the Tri-conderogas and other big pencils don't fit in the Carl. They do fit in the Dahle 155 but it has a plastic body and the front panel has a strong spring and doesn't have a catch to hold it open to insert the pencil. A little harder to use than the metal Carl. On this one you can adjust the point length (but not angle). It also bites into the body of the pencil.
If the body marks bother you, there is the Classroom Friendly version of this style of sharpener. It has a plastic body, comes in a large hole version, the front panel has a catch point to hold it, and has a larger the normal bin. The pencil clamp has plastic bumpers to hold the pencil instead of teeth so it doesn't mar the pencil body. It does not have a point adjustment screw like the Dahle, however.
Oh, and don't use any of these with the Wopex. It is finicky indeed. A high quality blade sharpener is best with the Wopex.