Resistor vs API MeasurePro
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!
API MeasurePro
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A mobile app version of the API Metrology MeasurePro software that is able to remotely control the MeasurePro desktop software and API Metrology instruments. This app can do alignments, probe features, and inspect parts with their corresponding CAD models.
Screenshots
Verdict
The clearest difference is update cadence: API MeasurePro at every 3 months against Resistor's every 9 months. API MeasurePro also leads on iOS requirement (13.0 vs 26.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Resistor ships an update every 9 months, API MeasurePro every 3 months. The most recent releases landed on November 14, 2026 and November 12, 2026 respectively.
| Parameter | Resistor | API MeasurePro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (19 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 9 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerhard Lentschik | Automated Precision Inc. |
In-app purchases
Resistor
No in-app purchases
API MeasurePro
No in-app purchases
Questions
Is Resistor free?
Is API MeasurePro free?
Do Resistor or API MeasurePro have ads?
Which is updated more often, Resistor or API MeasurePro?
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