# Vernier Caliper Micrometer vs Resistor Calc+

The clearest difference is rating: Resistor Calc+ at 5.0 against Vernier Caliper Micrometer's 4.1. Resistor Calc+ also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 20 months). Vernier Caliper Micrometer's advantage is ads (none vs shown) and ratings volume (22 vs 5). On price and device support there is nothing between them.

Both are free to download. Vernier Caliper Micrometer sells 1 one-off in-app purchase. Resistor Calc+ asks for nothing beyond the download.

Resistor Calc+ holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 22 and 5 respectively. Written reviews point the same way: 50% of Vernier Caliper Micrometer's written reviews are positive against 67% of Resistor Calc+'s.

Vernier Caliper Micrometer ships an update every 20 months, Resistor Calc+ every 2 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Vernier Caliper Micrometer | Resistor Calc+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (22 ratings)](https://appshunter.io/ios/app/vernier-caliper-micrometer/id1242638955/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/resistor-calc-plus/id1441211200/reviews)** |
| Number of ratings | **22** | 5 |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 24 MB | 6 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [齐 陈](https://appshunter.io/developer/455625305) | [EONSOFT](https://appshunter.io/developer/899851112) |

## What reviewers say

### Vernier Caliper Micrometer

[App page](https://appshunter.io/ios/app/vernier-caliper-micrometer/id1242638955)

This utility app transforms your iPhone or iPad into a precise measuring tool for short lengths. It supports both inch and centimeter units, features calibration, and offers a user-friendly interface.

**Highlights:** Measures short lengths, Supports inches and centimeters, Unit switching, Calibration feature, Easy to use interface, Attractive UI

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Resistor Calc+

[App page](https://appshunter.io/ios/app/resistor-calc-plus/id1441211200)

Easily determine resistance values from colored bands on resistors. Supports 3 to 6 band configurations with a visual representation of your selections. Ideal for electronics enthusiasts and hobbyists.

**Highlights:** 3, 4, 5, and 6 band resistor support, Visual band color selection, Displays resistance value and tolerance, Aids in electronics configuration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Vernier Caliper Micrometer free?

Vernier Caliper Micrometer is free to download, with in-app purchases available.

### Is Resistor Calc+ free?

Resistor Calc+ is free to download, with no in-app purchases.

### Which has better reviews, Vernier Caliper Micrometer or Resistor Calc+?

Resistor Calc+ is rated higher. Vernier Caliper Micrometer averages 4.1 out of 5 from 22 ratings, while Resistor Calc+ averages 5.0 from 5 ratings.

### Do Vernier Caliper Micrometer or Resistor Calc+ have ads?

Resistor Calc+ shows ads; Vernier Caliper Micrometer does not.

### Which is updated more often, Vernier Caliper Micrometer or Resistor Calc+?

Vernier Caliper Micrometer ships an update every 20 months, and Resistor Calc+ every 2 months. Most recently, Vernier Caliper Micrometer was updated on October 24, 2026 and Resistor Calc+ on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*