# Viscosity Conversion vs Mosquitone Detector

The clearest difference is price: Viscosity Conversion at $2.99 against Mosquitone Detector's $7.99. Viscosity Conversion also leads on device support (3 vs 1) and iOS requirement (13 vs 26.2). Mosquitone Detector's advantage is update cadence (every 9 months vs every 30 months) and chart position (#189 vs unranked). On ads and in-app purchases there is nothing between them.

Viscosity Conversion costs $2.99 and Mosquitone Detector $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Viscosity Conversion ships an update every 30 months, Mosquitone Detector every 9 months. The most recent releases landed on October 29, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Viscosity Conversion | Mosquitone Detector |
| --- | --- | --- |
| Price | **$2.99** | $7.99 |
| Rating | — | **[2.1 (13 ratings)](https://appshunter.io/ios/app/mosquitone-detector/id1289567807/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | — | 55.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 9 months** |
| Monetization | — | Paid |
| Best chart rank | — | **#189** |
| Size | 1 MB | 2 MB |
| Requires iOS | **13** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## What reviewers say

### Viscosity Conversion

[App page](https://appshunter.io/ios/app/viscosity-conversion/id630288155)

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

**In-app purchases:** none


### Mosquitone Detector

[App page](https://appshunter.io/ios/app/mosquitone-detector/id1289567807)

**Currently charting:** #189 Top Paid · Utilities (US App Store)

This sound measurement app detects high-frequency and ultrasonic noises that are inaudible to humans. It helps identify potentially harmful noise sources, especially those used to deter pests or young people. The app offers modes to detect and pinpoint the direction of these sounds.

**Highlights:** High frequency and ultrasonic sound detection, Peak frequency display, Sound source direction search (360 degrees), Selectable frequency bands (8-16 kHz, 16-23 kHz), Adjustable gain ranges, Measurement screen rotation

**In-app purchases:** none


## Frequently asked questions

### Is Viscosity Conversion free?

Viscosity Conversion costs $2.99, with no in-app purchases.

### Is Mosquitone Detector free?

Mosquitone Detector costs $7.99, with no in-app purchases.

### Do Viscosity Conversion or Mosquitone Detector have ads?

Neither Viscosity Conversion nor Mosquitone Detector shows ads.

### Which is updated more often, Viscosity Conversion or Mosquitone Detector?

Viscosity Conversion ships an update every 30 months, and Mosquitone Detector every 9 months. Most recently, Viscosity Conversion was updated on October 29, 2026 and Mosquitone Detector on November 1, 2026.

---

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