iAttenuation vs Resistor color codes calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iAttenuation
This app calculates resistor values for various passive attenuator networks. It supports T, Pi, H, O, and Minimum Loss Pad configurations, allowing users to input impedance and desired attenuation. It can also adjust resistor values to standard tolerances.
- Calculates resistor values for passive attenuator networks
- Supports Tee, Pi, H, O, and Minimum Loss Pad configurations
- Input and output impedance calculation
- Desired attenuation input
- Adjusts resistor values to standard tolerances (1%, 5%, 10%)
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Passive attenuators are two port / four terminal resistive networks that are designed to reduce (or attenuate, hence their name) the power between a source and load. They can also match the impedance between the source and load. They are used in a variety of audio and radio / RF applications. iAttenuation calculates resistor values for the following types of attenuator networks: Tee Network Pi Network H (Balanced Tee) O (Balanced Pi) Minimum Loss Pad Just enter in the input and output impedance values, and the desired attenuation, and iAttenuation does the rest! iAttenuation can also adjust the calculated resistor values to match the nearest standard 1%, 5%, or 10% tolerance values.
Resistor color codes calc
Instantly decode resistor color bands to find resistance, tolerance, and TCR. Also calculates series/parallel resistance and voltage dividers. Supports E-series validation and multiple languages.
- 3- to 6-band color code support
- Resistance, tolerance, and TCR calculation
- Value to color code conversion
- E-series validation
- Series and parallel resistor calculation
- Voltage divider calculation
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Resistor collar codes calc is a powerful tool for decoding and calculating resistor values using 3-, 4-, 5-, and 6-band color codes. Instantly get the resistance, tolerance, and temperature coefficient (TCR) based on the selected bands. The app also includes a code-to-value calculator, letting you enter a resistance value and see the matching color code. It verifies input against standard E-series values (E6 to E192) and suggests the closest standard resistor where needed. You can also calculate total resistance for series and parallel connections, as well as perform resistive voltage divider calculations — making this app ideal for circuit design and quick calculations. Key Features: • Supports 3-, 4-, 5-, and 6-band color codes • Calculates resistance, tolerance, and TCR • Enter values to find matching color bands • E-series validation and nearest standard suggestion • Series and parallel resistor calculator • Resistive voltage divider calculator The application supports multiple languages, including: English, French, German, Indonesian, Italian, Polish, Portuguese, Russian, Spanish, Turkish, and Ukrainian. Perfect for students, hobbyists, and electronics professionals alike.
Screenshots
Verdict
The clearest difference is price: Resistor color codes calc at Free against iAttenuation's $2.99. Resistor color codes calc also leads on update cadence (every 2 months vs every 69 months). iAttenuation's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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
Resistor color codes calc is free to download; iAttenuation costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iAttenuation ships an update every 69 months, Resistor color codes calc every 2 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.
| Parameter | iAttenuation | Resistor color codes calc |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 69 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Black Cat Systems | ALG Software Lab |
Customer experience
iAttenuation
Resistor color codes calc
In-app purchases
iAttenuation
No in-app purchases
Resistor color codes calc
No in-app purchases


