Resistor Tools vs SMD decoder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resistor Tools
This utility app provides a suite of tools for calculating and determining resistor values. It assists hobbyists and engineers with series, parallel, and voltage divider calculations, as well as inverting amplifier gain.
- Series and parallel resistor calculation
- Resistor combination finder
- Voltage divider ratio and value calculation
- Inverting amplifier gain calculation
- Save combinations to CSV
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This app is a collection of resistor calculators. It is suitable for hobbyist or electronic engineer. * Calculate resistance of two resistors in series or parallel * Find out combinations of two resistors in series/parallel making a desired resistance * Calculate ratio of R1/R2 and voltage divider * Find out resistor values of making voltage divider ratio * Find out resistor values of making inverting amplifier gain * Save combination values in CSV file
SMD decoder
Decode SMD resistors with this practical tool. It supports three-digit, four-digit, and EIA-96 encoded resistor values, providing quick and accurate identification.
- Decodes 3-digit SMD codes
- Decodes 4-digit SMD codes
- Decodes EIA-96 SMD codes
- Resistor value identification
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A practical application that will decode any SMD resistor, regardless of whether the code is three or four digits, as well as those encoded in the EIA - 96 system.
Screenshots
Verdict
The clearest difference is in-app purchases: SMD decoder at none against Resistor Tools's 1. SMD decoder also leads on update cadence (every 2 days vs every 2 months). Resistor Tools's advantage is ratings volume (10 vs 1). On price, rating, ads 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. Resistor Tools sells 1 one-off in-app purchase. SMD decoder asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Resistor Tools against 5.0 for SMD decoder. That said, the two scores are not equally well evidenced: Resistor Tools has 10 ratings behind it against 1, so its average is the more settled of the two.
Resistor Tools ships an update every 2 months, SMD decoder every 2 days. The most recent releases landed on September 24, 2026 and June 1, 2026 respectively.
| Parameter | Resistor Tools | SMD decoder |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) | 5.0 (1 ratings) |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Arkadiusz Fryszkowski |
Customer experience
Resistor Tools
SMD decoder
In-app purchases
Resistor Tools
- Unlock pro feature$0.99
SMD decoder
No in-app purchases
Questions
Is Resistor Tools free?
Is SMD decoder free?
Which has better reviews, Resistor Tools or SMD decoder?
Do Resistor Tools or SMD decoder have ads?
Which is updated more often, Resistor Tools or SMD decoder?
Other comparisons
