# Gauss Tesla Meter vs Wavelet Voice Sonogram

The clearest difference is price: Gauss Tesla Meter at $0.99 against Wavelet Voice Sonogram's $6.99. Gauss Tesla Meter also leads on update cadence (every 2 months vs every 8 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Gauss Tesla Meter costs $0.99 and Wavelet Voice Sonogram $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gauss Tesla Meter ships an update every 2 months, Wavelet Voice Sonogram every 8 months. The most recent releases landed on November 8, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Gauss Tesla Meter | Wavelet Voice Sonogram |
| --- | --- | --- |
| Price | **$0.99** | $6.99 |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/gauss-tesla-meter/id1248096214/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Paid | — |
| Size | 10 MB | 0 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stephane Ameau](https://appshunter.io/developer/1248096213) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## What reviewers say

### Gauss Tesla Meter

[App page](https://appshunter.io/ios/app/gauss-tesla-meter/id1248096214)

This utility app monitors magnetic field strength and direction, providing alerts when specific thresholds are met. It records measurements, plots data, and allows export via email. The app supports various units and acquisition rates, with an automatic resizing screen for optimal viewing.

**Highlights:** Magnetic field strength and direction monitoring, Customizable alerts (visual, sound, vibration), Data recording and plotting, CSV export via email, Adjustable measurement rates, Multiple display units (µTesla, mGauss)

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

**In-app purchases:** none


### Wavelet Voice Sonogram

[App page](https://appshunter.io/ios/app/wavelet-voice-sonogram/id1574131130)

**In-app purchases:** none


## Frequently asked questions

### Is Gauss Tesla Meter free?

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

### Is Wavelet Voice Sonogram free?

Wavelet Voice Sonogram costs $6.99, with no in-app purchases.

### Do Gauss Tesla Meter or Wavelet Voice Sonogram have ads?

Neither Gauss Tesla Meter nor Wavelet Voice Sonogram shows ads.

### Which is updated more often, Gauss Tesla Meter or Wavelet Voice Sonogram?

Gauss Tesla Meter ships an update every 2 months, and Wavelet Voice Sonogram every 8 months. Most recently, Gauss Tesla Meter was updated on November 8, 2026 and Wavelet Voice Sonogram on November 7, 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.*