Resistor vs SJ Resistor Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resistor
Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.
- Calculate resistor values from color bands
- Convert resistor values to color bands
- Supports 4, 5, and 6-band resistors
- Handles SMD codes (EIA-3, EIA-4, EIA-96)
- Works offline
- No registration required
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Resistor Converter – Fast & Easy Calculate resistor values, color bands, and SMD codes in seconds – perfect for electronics hobbyists, students, and professionals. Supports 4-, 5-, and 6-band resistors as well as SMD codes (EIA-3, EIA-4, EIA-96). - Tap color bands → read the value - Enter resistor → get matching color bands & SMD codes - Works offline, no registration required - Perfect for electronics, study & DIY projects Simple, fast, and free – the perfect companion for every electronics enthusiast!
SJ Resistor Calculator
This tool simplifies resistor calculations for electronics enthusiasts, students, and professionals. It accurately decodes resistor color codes and performs series/parallel calculations for complex circuit analysis. Avoid manual errors and streamline your electronics projects.
- Resistor color code decoding (4, 5, 6 band)
- Series resistor calculations
- Parallel resistor calculations
- Accurate resistance and tolerance values
- User-friendly interface
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############################# # SJ RESISTOR CALCULATOR # ############################# Never misread your electronic components again! SJ Resistor Calculator is the essential tool for professionals, students, and electronics enthusiasts. No more color code errors or tedious calculations for your circuits! +----------------------------------------+ | WHY CHOOSE THIS APP | +----------------------------------------+ [ INTUITIVE DECODING ] - Instantly read 4, 5, or 6-band resistors. - Get the exact value and tolerance effortlessly. [ SERIES CALCULATIONS ] - Calculate the equivalent resistance of your series circuits. - Add as many components as you need. [ PARALLEL CALCULATIONS ] - Easily analyze the behavior of your parallel circuits. - Absolute precision for your electrical designs. [ PROFESSIONAL RELIABILITY ] - A clean, ergonomic, and straightforward interface. - Designed for maintenance, studies, and troubleshooting. Free and available in your language, download it today!
Screenshots
Verdict
The clearest difference is in-app purchases: Resistor at none against SJ Resistor Calculator's 5. Resistor also leads on ads (none vs shown) and ratings volume (19 vs 1). SJ Resistor Calculator's advantage is update cadence (every 2 weeks vs every 9 months) and iOS requirement (16.0 vs 26.0). On price, rating and device support 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. SJ Resistor Calculator sells 5 one-off in-app purchases. Resistor asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Resistor against 5.0 for SJ Resistor Calculator. That said, the two scores are not equally well evidenced: Resistor has 19 ratings behind it against 1, so its average is the more settled of the two.
Resistor ships an update every 9 months, SJ Resistor Calculator every 2 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Resistor | SJ Resistor Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (19 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 19 — better | 1 |
| Update frequency | Every 9 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerhard Lentschik | Stephane JAILLIARD |
Customer experience
Resistor
SJ Resistor Calculator
In-app purchases
Resistor
No in-app purchases
SJ Resistor Calculator
- A coffee$0.99
- A cookie$2.99
- No ads$4.99
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- A lemon tart$4.99
- A pizza$9.99
Questions
Is Resistor free?
Is SJ Resistor Calculator free?
Which has better reviews, Resistor or SJ Resistor Calculator?
Do Resistor or SJ Resistor Calculator have ads?
Which is updated more often, Resistor or SJ Resistor Calculator?
Other comparisons
