Vibroscope vs Molecular Weight Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vibroscope
This tool uses your device's accelerometer to analyze vibrations in real-time, even those inaudible to humans. It visualizes acceleration data and offers FFT analysis for frequency components, with options to log measurements.
- Real-time vibration measurement
- Inaudible vibration detection
- Two-axial coordinate display
- Time-axis waveform display
- FFT analyzer for frequency components
- Data logging to text files
- Snapshot of measurement screen
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"Vibroscope" is a powerful vibration analysis tool that uses the iPhone's acceleration sensor to measure various vibrations in real time. It allows you to monitor and visualize very low frequency vibrations that are inaudible to the human ear. This app intuitively detects acceleration amounts and displays the two-axial coordinates in the horizontal direction and the time-axis waveform in the vertical direction. It can measure by determining the horizontal or vertical direction to suit the attitude of the iPhone automatically, so as to be available on the floor and desk or handheld. "Vibroscope" is also equipped with FFT analyzer that can analyze the frequency components of very low frequency vibrations. The measurement data can also be saved as a log file, so you can use it as a vibration data logger. Application Examples: - Analysis of the amount of acceleration and frequency components of the floor and walls during car traffic. - Measurement of howling vibration of audio equipment, etc. - Detection of acceleration and vibration of trains and automobiles. - Body balance check (horizontal body shaking detection). - Measurement of vibration acceleration during earthquakes, etc. (displayed value x 100 [GAL]) Features: - Measurement of vibrations (Main): acceleration values (m/s/s) - Real-time display: the horizontal direction (X-Y) - 2-axis vector plane graph, the vertical direction (Z) - the time-varying graph. - Display scale switching of vibration acceleration graph (Linear/Log): Linear - linear scale display, Log - logarithmic scale display. - 3-axis composite acceleration display (Compo) - Peak level value display (Peak) - Switching of acceleration display (Instant/Average): Instant - instantaneous acceleration, Average - average acceleration per second. - Scaling of measurement display range - FFT analysis for 3-axis directional and composite acceleration, with peak frequency (FFT) - FFT graph display control (Axes/Axis-1/Axis-2) - Switching of sensor sampling period (Slow/Fast): slow, fast - Axis direction (Axis): Swapping the axis direction on the graph display during operation. - Measurement timer function: 1 sec to 1 hour - Start delay timer function: 0 - 20 sec - Reference level setting in FFT mode: 1e-6m/s/s, or 1e-5m/s/s - Snapshot of the measurement screen (Snap): Capture the measurement results and Timestamp to "Photos". - Data Logger: X-axis, Y-axis, Z-axis, saved in a text file (UTF8). It saves the measurement data, timestamp to LOG file. Important settings: - At the time of the first access to Photos after installing the app, you will be asked permission to access them from the iOS system. If you did not enable this setting on this time, it cannot be access from the app by privacy restrictions of the iOS. Please enable slide switch of the app in the access permission of the iOS setting, "Settings > Privacy & Security > Photos". - This app does not support to the background operation, so it needs to set on "Never" in the iOS setting, "Settings > General > Auto-Lock" for a long-time operation. Notes: - In general, there is variation and accuracy error by individual terminals and sensor devices of the iPhone, so this app does not recommend the use in the formal measurement. It is also possible that the accuracy error will accumulate if the vibration is too large, it may not be appropriate to display the measured value. - While driving a car or operating machinery, please do not use this app for safety. - The logarithmic scale graph displays very small numerical value, so it may be affected by noise and temperature error in your environment or time fluctuation of sensor calibration. - Log data can be transferred from an iOS device to a Mac or PC using the iTunes File Sharing feature. MacOS Catalina and later can share files between an iOS device and a Mac using the Finder. Please visit our iOS app support page for more information on this app.
Molecular Weight Calculator
This tool calculates the average molecular weight of molecules using their chemical formulas. It offers instant results, supports high precision, and is optimized for everyday use on iOS devices. The app prioritizes user privacy and is ad-free.
- Instant molecular weight calculation
- Copy results to other apps
- Includes formula references
- Supports up to 16 decimal places
- Works on iPhone and iPad
- Ad-free and privacy-focused
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The Molecular Weight Calculator is a physics/math tool designed to find the average molecular weight (MW) of molecules by inputting their chemical formulas. Features: - Instant calculation - Results can be copied to other apps - Includes formula references - Supports up to 16 decimal places - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. Note: Chemical formulas are case-sensitive (e.g., C22H30N4O). Definitions: - Molecular mass (molecular weight): The mass of one molecule of a substance, expressed in unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12) - Molar mass (molar weight): The mass of one mole of a substance, expressed in grams per mole (g/mol). Thank you for your support! Visit nitrio.com for more apps for your iOS devices.
Screenshots
Verdict
The clearest difference is price: Molecular Weight Calculator at $2.99 against Vibroscope's $7.99. Molecular Weight Calculator also leads on device support (3 vs 1) and iOS requirement (13 vs 26.0). Vibroscope's advantage is update cadence (every 8 months vs every 29 months). On rating, ratings volume, 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
Vibroscope costs $7.99 and Molecular Weight Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Vibroscope against 5.0 for Molecular Weight Calculator. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
Vibroscope ships an update every 8 months, Molecular Weight Calculator every 29 months. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.
| Parameter | Vibroscope | Molecular Weight Calculator |
|---|---|---|
| Price | $7.99 | $2.99 — better |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 8 months — better | Every 29 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 13 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | TOON,LLC | Nitrio |
Customer experience
Vibroscope
Molecular Weight Calculator
In-app purchases
Vibroscope
No in-app purchases
Molecular Weight Calculator
No in-app purchases
Questions
Is Vibroscope free?
Is Molecular Weight Calculator free?
Which has better reviews, Vibroscope or Molecular Weight Calculator?
Do Vibroscope or Molecular Weight Calculator have ads?
Which is updated more often, Vibroscope or Molecular Weight Calculator?
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