Comparison

Viscosity Conversion vs Mosquitone Detector

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

Head to head
About

Viscosity Conversion

Features
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Viscosity Conversion - Easily convert between various types of units for Dynamic Viscosity, Kinematic Viscosity, and Dynamic Viscosity for Oil and Water. Viscosity is the state of being thick, sticky, and semi-fluid in consistency, primarily due to internal friction. It is quantified by a measure of the magnitude of internal friction, typically represented as the force per unit area resisting flow between parallel layers at a unit distance apart moving at unit speed relative to each other. Viscosity of a fluid indicates its resistance to gradual deformation under shear stress or tensile stress. In everyday terms, it's akin to the concept of "thickness." For instance, honey exhibits significantly higher viscosity compared to water. Fluid viscosity reflects its resistance to shear or flow and serves as an indicator of its adhesive, cohesive, or frictional properties. This resistance arises due to internal molecular friction within the fluid, resulting in a frictional drag effect. There are two key measures of fluid viscosity: dynamic and kinematic viscosity. Viscosity Types: 1. Dynamic Viscosity - Characteristic of fluids and plastic solids, dynamic viscosity quantifies a substance's resistance to deformation and is informally known as "thickness." 2. Dynamic Viscosity for Oil and Water - Conversion factors for viscosity, encompassing various oils, water, glycerin, and different temperatures. 3. Kinematic Viscosity - Includes units such as Stokes, centistokes, lentor, square meter/second, square foot/second, poise cubic centimeter/gram, and more. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

Mosquitone Detector

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
Currently charting
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"Mosquitone Detector" is a sound measurement app that detects high frequency noises and ultrasonic sounds hard to hear for human ears. The human audible range is generally said to be 20 Hz to 20 kHz, but sounds above 10kHz gradually become harder to hear with age. On the other hand, prolonged exposure to noise at excessively high sound pressure levels has been pointed out as potentially harmful to health, including hearing. You may be unknowingly exposed to artificially generated dangerous high-frequency noise. This app can detect and visualize such noises. For example, there are increasing cases where high frequency noise generators are installed in various places as a purpose of repelling young people and beast pests using very high frequency mosquito noises, which are inaudible to general adults. Young children, in particular, may be exposed to very loud noise in an uncomfortable environment because adults cannot recognize it. Use this app to find high frequency noise and quickly get away from the bad spot or remove the noise source. Two operating modes are available in this app, Detection Mode and Search Mode. Detection Mode can detect if there are high frequency noises and ultrasonic sounds. Search Mode can pinpoint the direction of high frequency sound sources. Features: - Detection of high frequency sound and ultrasonic wave, display of the peak frequency of the highest level. - Search for sound source direction: 360 degrees horizontally - Detectable frequency range: 8 kHz - 16 kHz / 16 kHz - 23 kHz (2 band division) - Function to switch the gain range: 0dB - 100dB / -10dB - 90dB / -20dB - 80dB (in Detection Mode) - Measurement screen rotation function (Rotate) Operating procedure: 1) Selection of detectable frequency band Select the frequency band as more than 16kHz or less than 16kHz. 2) Selection of Operational mode - Detection Mode (Detect) It finds an inaudible high frequency and ultrasonic sound in the frequency band more than 16 kHz (or less than 16 kHz). Tap START button and it starts the detection function. If high frequency or ultrasonic sound exist, it will be displayed on the graph as the peak frequency. You can make the graph display easier to see by switching the gain range. - Search Mode (Search) It finds the direction of occurrence of the high-frequency sound source that detected the peak frequency. Search mode can be used only when high frequency or ultrasonic sound is founded in Detect mode. Please make sure to hold the bottom built-in microphone of iPhone so that it faces outward. If you measure with the microphone facing inward, microphone sensitivity will deteriorate, and accurate measurement will not be possible. Tap Start button, and firmly hold the iPhone terminal, please turn slowly clockwise. Recommended that the time required for a rotation is about 15 seconds and the rotation speed in the graph is approximately 4 rpm. The measurement is completed by one revolution, and the signal strength of the peak frequency is displayed on the pie chart. You can find approximate direction of the high-frequency sound source relative to your standing position. 3) Snapshot Measurement results can be saved as image files in “Photos,” and a timestamp is embedded in the image. Note: If the frequency changes periodically or randomly, it is not possible to determine the direction of occurrence in "Search". Ultrasonic measurement depends on the sensitivity characteristics of the built-in microphone, so the measurement result may vary. Peak frequency measurements (dB) conform to general noise levels. Remarks: It is still under study about health effects on human body by listening to high frequencies including ultrasonic sound. If the high frequency noise of high level is detected daily, we recommend that you consult an expert. Please visit our iOS App Support page for more information on this app.

Screenshots

Viscosity Conversion4 screens
Mosquitone Detector4 screens

Verdict

The call

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.

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

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 6 level
Viscosity Conversion versus Mosquitone Detector: the parameters behind the verdict, then further details
ParameterViscosity ConversionMosquitone Detector
Price$2.99 — better$7.99
Rating—2.1 (13 ratings) — better
Positive reviews—55.6% of reviews
Number of ratings—13 — better
Update frequencyEvery 30 monthsEvery 9 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
Best chart rank—#189 — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13 — better26.2
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperNitrioTOON,LLC

In-app purchases

None

Viscosity Conversion

No in-app purchases

None

Mosquitone Detector

No in-app purchases

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.

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