iOBD2 vs Circuit Resistance Creator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iOBD2
This app serves as a reference for standard Diagnostic Trouble Codes (DTCs) found in vehicles. It helps users understand fault codes generated by a car's onboard computer, aiding in problem diagnosis.
- Diagnostic Trouble Code reference
- Fault code lookup
- Vehicle system diagnostics
- Problem identification
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Standard Diagnostic Trouble Codes reference book. A Diagnostic Trouble Code is set in a vehicle's on-board computer when a fault occurs in any monitored system. The code number corresponds to the type of fault, and can be used to diagnose the problem.
Circuit Resistance Creator
Calculate equivalent resistance for any resistor circuit. This tool is designed for students, technicians, and engineers, offering high accuracy for voltage, current, and resistance. It's a great way to check homework and perform engineering calculations.
- Equivalent resistance calculation
- Supports any resistor circuit
- High accuracy displays (6 decimal places)
- Apply custom circuit voltages
- Designed for students and engineers
- Homework checking tool
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Features: - Designed for students, technicians and engineers. - Find Equivalent Resistance for any resistor circuit. - Great Engineering tool. - Great for checking homework. - Super accurate with 6 decimal voltage, current and ohms displays. - Apply any circuit voltage from 1 to 1000 volts, with 3 decimal accuracy. - FREE and NO ADVERTISEMENTS.
Screenshots
Verdict
The clearest difference is review sentiment: Circuit Resistance Creator at 100% against iOBD2's 29%. Circuit Resistance Creator also leads on rating (5.0 vs 4.0) and update cadence (every 3 weeks vs every 3 months). iOBD2's advantage is ratings volume (19 vs 3) and iOS requirement (4.3 vs 14.0). On price, ads, in-app purchases and monetization model 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.
Circuit Resistance Creator holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: iOBD2 has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 29% of iOBD2's written reviews are positive against 100% of Circuit Resistance Creator's.
iOBD2 ships an update every 3 months, Circuit Resistance Creator every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | iOBD2 | Circuit Resistance Creator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (19 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 28.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 19 — better | 3 |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 4.3 — better | 14.0 |
| Further details — not scored | ||
| Size | 44 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | 翔宇 金 | David White |
Customer experience
iOBD2
Circuit Resistance Creator
In-app purchases
iOBD2
No in-app purchases
Circuit Resistance Creator
No in-app purchases
Questions
Is iOBD2 free?
Is Circuit Resistance Creator free?
Which has better reviews, iOBD2 or Circuit Resistance Creator?
Do iOBD2 or Circuit Resistance Creator have ads?
Which is updated more often, iOBD2 or Circuit Resistance Creator?
Other comparisons
