Accelab 2.2 adds a new lab: circular motion.

What's new

Film a marker going round from directly above, and Accelab fits a circle to its path. You get the marker's x, y, and angle against time, along with the radius.

The circular motion lab also works with the Sensor Method. Lay your iPhone flat on a turntable, and Accelab records its angular velocity, as well as its centripetal and tangential acceleration.

Accelab 2.2 also lets you export by graph. Pick the graph you want, and Accelab exports just the two columns behind it, ready to paste into Desmos. If you need something different, you can still choose your own columns.

Why I added a new lab

I'm in IB DP2, which means I'm working on my Physics IA: a lab I design, carry out and report. In class, we've been exploring different ways to set up a lab, and circular motion was the one that intrigued me most. So I built it into the tool I already made, so that I could use it for my own IA.

AI transparency

Accelab is substantially assisted by AI. For the circular motion lab in particular, the code and the mathematics behind it were written by Claude Fable 5.1. Researching and coding it all by myself wasn't realistic alongside the workload of IB DP2, and I needed the update soon enough to use it for my IA.

What didn't change is where the update came from. As with all my education projects, the need and the idea came directly from me, as a student living inside the friction.

I also used Claude Opus 5.5 to write a detailed document explaining every mathematical method behind Accelab 2.2. I studied it and made sure I understood each method before releasing the update under my name. You can read the document here.

How I am using Accelab 2.2

I've been using Accelab 2.2 to explore ideas for my Physics IA. For example, I looked at how the voltage of the motor spinning a disc affects the angular velocity of an object sitting on it:

Availability

Accelab 2.2 is available now on the App Store, for iOS 26.0 or later.