Comparison

Tesla Field Meter vs Screw Gauge

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tesla Field Meter

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
Read full description

Tesla Field Meter measures the magnitude of the magnetic field using your iPhone or iPad's built-in magnetometer. It responds to both static (DC) magnetic fields and the alternating magnetic field radiated by AC electrical sources such as microwave ovens, power lines, and household electronics. The research on the adverse biological effects of magnetic field exposure, whether static or alternating, is inconclusive — so it's best to practice prudent avoidance. Low level magnetic fields are naturally generated by the Earth. Higher level fields are generated by sources such as microwave ovens and the clock radio next to your bedside. Use the Tesla Field Meter to make a qualitative assessment of the strength of magnetic field exposure in your environment. Features: • Analog meter display with digital readout • AC and DC measurement modes • 100µT and 1mT range switching • High-pass, low-pass, and moving average digital filters • Real-time magnetic field plot with interactive gestures: - Pinch to zoom the magnetic field scale in or out - Drag horizontally to scroll through recorded history - Drag vertically to shift the baseline for signals with a large DC offset - Double-tap to snap back to live view and restore defaults - Long press to clear and restart recording

About

Screw Gauge

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
Read full description

The screw gauge K12 app explains how to measure the diameter of a sheet or wire with the help of a U-shaped frame of gun metal. Explains all the parts of screw gauge by visual presentation. The instrument is based on the principle of micrometer screw or screw gauge and it is used to measure up to 0.01 mm with greater accuracy. This educational K12 app is the easiest method to get detailed knowledge on how to use the Screw Gauge including adjustment according to the sheet or wire. ==Features== Theory - Explains in detail about Screw Gauge and its measurement process. Parts - Explanation of all the parts of screw gauge in the animation. Experiment - Includes an animation experiment to calculate pitch, least count, zero error and finding the diameter of an object. Practice - Includes an experiment section for the user to measure the diameter of different objects using 3D animation. Quiz - An interactive quiz to check the level of understanding with a score board. Download the Screw Gauge app, and other educational games and apps published by Ajax Media Tech. With the gamified education model, children will be able to absorb and learn the fundamentals and basics with minimal efforts and maximum retention.

Screenshots

Tesla Field Meter4 screens
Screw Gauge4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Tesla Field Meter versus Screw Gauge: the parameters behind the verdict, then further details
ParameterTesla Field MeterScrew Gauge
Price$0.99$0.99
Rating2.8 (9 ratings) — better2.5 (2 ratings)
Positive reviews43.8% of reviews — better0.0% of reviews
Number of ratings9 — better2
Update frequencyEvery 11 months — betterEvery 31 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.09.0 — better
Further details — not scored
Size4 MB43 MB
Age rating4+4+
DeveloperJMS Solutions, LLCwww.ajaxmediatech.com

Customer experience

Tesla Field Meter

All ratings9 ratings
Positive44.4%
Neutral0.0%
Negative55.6%
Written reviews16 reviews
Positive43.8%
Neutral0.0%
Negative56.3%

Screw Gauge

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Tesla Field Meter

No in-app purchases

None

Screw Gauge

No in-app purchases

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.

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