DC Circuit Builder vs DAC App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DC Circuit Builder
Design, build, and test DC circuits with realistic component behavior. Visualize charge flow and power dissipation. Ideal for students and educators to grasp fundamental electrical concepts.
- Design series, parallel, and compound circuits
- Visualize charge flow
- Realistic voltmeters and ammeters
- Voltage displayed on circuit nodes
- Bulb brightness indicates power dissipation
Read full descriptionHide full description
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
DAC App
This free application simplifies the recording of student audio responses for specific AP exams. It streamlines the process for both students and proctors, and automatically uploads audio files for school staff. Designed for use on school-issued iPads.
- Record audio responses for AP exams
- Simplify recording process
- Intuitive interface for students
- Streamline post-exam tasks
- Direct upload of audio files
- Designed for school-owned iPads
Read full descriptionHide full description
The Digital Audio Capture (DAC) app is a free app developed by College Board and ETS to use for recording students’ audio responses for the AP Music Theory Exam and AP French, German, Italian, and Spanish Language and Culture Exams. This app has been developed to simplify the recording process for students and proctors, utilizing current technology that is intuitive to most students. It streamlines post-exam tasks for school staff by directly uploading student audio files after recording. School staff will follow the instructions in the 2025-26 AP Exam Instructions book to administer an exam using the DAC app. NOTE: The DAC app is limited for use on school-owned and -controlled iPad tablets (iOS 15.0 and above). Schools must update to the 2026 version of the DAC app; previous versions of the app will not work in 2026.
Screenshots
Verdict
The clearest difference is rating: DC Circuit Builder at 2.6 against DAC App's 1.8. DC Circuit Builder also leads on review sentiment (50% vs 20%) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DC Circuit Builder holds the better App Store score, 2.6 against 1.8. Both are backed by a comparable volume of ratings — 26 and 16 respectively. Written reviews point the same way: 50% of DC Circuit Builder's written reviews are positive against 20% of DAC App's.
| Parameter | DC Circuit Builder | DAC App |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (26 ratings) — better | 1.8 (16 ratings) |
| Positive reviews | 50.0% of reviews — better | 20.0% of reviews |
| Number of ratings | 26 — better | 16 |
| Update frequency | — | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 5.1.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 6 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Nerd Island Studios, LLC | Educational Testing Service |
Customer experience
DC Circuit Builder
DAC App
In-app purchases
DC Circuit Builder
No in-app purchases
DAC App
No in-app purchases
Questions
Is DC Circuit Builder free?
Is DAC App free?
Which has better reviews, DC Circuit Builder or DAC App?
Do DC Circuit Builder or DAC App have ads?
Other comparisons
