About this app
Design, build, and test circuits on your iPhone or iPad for free! "So that's how parallel circuits work!" - Physics student From Nerd Island Studios, LLC the creators of the top-rated "Step2Step Physics - Mechanics" for the iPad, comes an easy-to-use DC circuit builder: • Build and test series, parallel, and compound circuits • Visible charges flow through the circuit components • Voltmeters and ammeters behave like the real thing • Voltages are shown right on the circuit nodes • Bulbs glow brighter according to the amount of power they are dissipating Tested by high school teachers and students, DC Circuit Builder meets the need for a simple classroom tool to show students the basics of current and voltage, as well as the proper use of voltmeters and ammeters. www.nerdislandstudios.com
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 19, 2026 · 10:12 AM Free
Screenshots
