# Tesla Field Meter vs Screw Gauge

The clearest difference is review sentiment: Tesla Field Meter at 44% against Screw Gauge's 0%. Tesla Field Meter also leads on rating (2.8 vs 2.5) and update cadence (every 11 months vs every 31 months). Screw Gauge's advantage is iOS requirement (9.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Tesla Field Meter costs $0.99 and Screw Gauge $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tesla Field Meter holds the better App Store score, 2.8 against 2.5. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews point the same way: 44% of Tesla Field Meter's written reviews are positive against 0% of Screw Gauge's.

Tesla Field Meter ships an update every 11 months, Screw Gauge every 31 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Tesla Field Meter | Screw Gauge |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[2.8 (9 ratings)](https://appshunter.io/ios/app/tesla-field-meter/id351080302/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/screw-gauge/id1061872321/reviews) |
| Number of ratings | **9** | 2 |
| Positive reviews | **43.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 31 months |
| Monetization | Paid | Paid |
| Size | 4 MB | 43 MB |
| Requires iOS | 16.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JMS Solutions, LLC](https://appshunter.io/developer/351080305) | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) |

## What reviewers say

### Tesla Field Meter

[App page](https://appshunter.io/ios/app/tesla-field-meter/id351080302)

This application measures magnetic field strength, responding to both static and alternating fields. It helps users make a qualitative assessment of magnetic field exposure from various sources.

**Highlights:** Measures magnetic field magnitude, Responds to static magnetic fields, Responds to alternating magnetic fields, Qualitative strength assessment, Identifies field sources

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Screw Gauge

[App page](https://appshunter.io/ios/app/screw-gauge/id1061872321)

Learn to accurately measure the diameter of sheets or wires using a virtual screw gauge. This app visually explains all parts and demonstrates measurement processes with interactive animations and practice experiments. Test your knowledge with a quiz.

**Highlights:** Detailed theory on screw gauge measurement, Animated explanation of all parts, Interactive experiment for pitch and zero error, 3D animation practice for diameter measurement, Interactive quiz with score tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tesla Field Meter free?

Tesla Field Meter costs $0.99, with no in-app purchases.

### Is Screw Gauge free?

Screw Gauge costs $0.99, with no in-app purchases.

### Which has better reviews, Tesla Field Meter or Screw Gauge?

Tesla Field Meter is rated higher. Tesla Field Meter averages 2.8 out of 5 from 9 ratings, while Screw Gauge averages 2.5 from 2 ratings.

### Do Tesla Field Meter or Screw Gauge have ads?

Neither Tesla Field Meter nor Screw Gauge shows ads.

### Which is updated more often, Tesla Field Meter or Screw Gauge?

Tesla Field Meter ships an update every 11 months, and Screw Gauge every 31 months. Most recently, Tesla Field Meter was updated on October 26, 2026 and Screw Gauge on October 24, 2026.

---

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