Resistor Plus vs MyChaffey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resistor Plus
Easily calculate resistor values and tolerance using color codes. Simply select the colors for each band, and the app instantly displays the resistance in ohms. Save your results with screenshots for future reference.
- Resistor color code calculation
- Tolerance calculation
- Instant results display
- Copy result functionality
- Screenshot capability
- Works on iPhone and iPad
- Ad-free and private
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Resistor Calculator is the essential tool for electronics engineers, hobbyists, makers, and students. Instantly decode resistor color bands, calculate circuit values, and look up standard resistor values — all in one app. RESISTOR COLOR CODE CALCULATOR • Support for 4-band, 5-band, and 6-band resistors • Tap color bands on a realistic resistor graphic to read values instantly • View resistance, tolerance, min/max range, and temperature coefficient • Intuitive color picker with all standard EIA color codes REVERSE LOOKUP • Enter a resistance value and get the matching color band combination • Find the closest standard value from E-series tables • Perfect for designing circuits and selecting components SERIES & PARALLEL CALCULATOR • Calculate total resistance for resistors in series or parallel • Add unlimited resistors with engineering notation input (e.g. 4.7k, 2.2M) • See live results with formula reference VOLTAGE DIVIDER • Solve for output voltage (Vout) or unknown resistor (R2) • Interactive circuit diagram updates in real time • Supports engineering notation for quick input E-SERIES REFERENCE LIBRARY • Browse standard resistor values from E12, E24, E48, E96, and E192 series • Search and filter values instantly • Tap to copy any value to clipboard DESIGNED FOR ENGINEERS • Clean, distraction-free interface • Works on iPhone and iPad • No ads, no subscriptions, no internet required • Haptic feedback for a responsive experience Whether you are building your first LED circuit or designing professional PCBs, Resistor Calculator Pro gives you fast, accurate answers right on your device. Download now and keep the most useful resistor tool in your pocket. Resistor Parameters: Band Digit Black - 0 Brown - 1 Red - 2 Orange - 3 Yellow - 4 Green - 5 Blue - 6 Violet - 7 Grey - 8 White - 9 Band Multiplier Black × 1 Ω Brown × 10 Ω Red × 100 Ω Orange × 1 kΩ Yellow × 10 kΩ Green × 100 kΩ Blue × 1 MΩ Violet × 10 MΩ Gold × 0.1 Ω Silver × 0.01 Ω Band Tolerance Brown - 1% Red - 2% Gold - 5% Silver - 10% A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, divide voltages, bias active elements, and terminate transmission lines, among other uses. A resistor opposes the flow of electrical current; the higher the value of the resistor, the more it opposes the current flow. Values are given in ohms. Thank you for your support! Visit nitrio.com for more apps for your iOS devices.
MyChaffey
This app provides students with a centralized hub for campus life. Access class schedules, assignments, student services, and campus events. Receive important announcements and connect with the college community.
- Class and assignment access
- Student service information
- Campus event listings
- Push notifications for updates
- Campus maps
- Staff and department directory
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MyChaffey is the new mobile app that connects you to your Chaffey College campus and community. Get convenient access to your classes, assignments, student services, campus events, important announcements and more. Use MyChaffey to: - Connect to your Academic and Career Community - Receive push notifications on upcoming deadlines, events and important campus updates - Find staff, professors, departments, services, organizations and peers - Conveniently access campus maps - Stay focused on your most important to-dos If you have questions about the MyChaffey App, please contact the IT Help Desk by emailing isrepairs@chaffey.edu.
Screenshots
Verdict
The clearest difference is price: MyChaffey at Free against Resistor Plus's $2.99. MyChaffey also leads on update cadence (every 5 months vs every 20 months) and iOS requirement (14.2 vs 16.6). On ads, in-app purchases 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
MyChaffey is free to download; Resistor Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Resistor Plus ships an update every 20 months, MyChaffey every 5 months. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.
| Parameter | Resistor Plus | MyChaffey |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 3.0 (6 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 6 — better |
| Update frequency | Every 20 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 14.2 — better |
| Further details — not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 17+ |
| Developer | Nitrio | UCROO |
Customer experience
Resistor Plus
MyChaffey
In-app purchases
Resistor Plus
No in-app purchases
MyChaffey
No in-app purchases
Questions
Is Resistor Plus free?
Is MyChaffey free?
Do Resistor Plus or MyChaffey have ads?
Which is updated more often, Resistor Plus or MyChaffey?
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