Vibration meter vs DaysBetween
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vibration meter
Measure the strength of vibrations, tremors, and earthquakes using your phone's built-in seismograph. Visualize seismic movements on graphs, receive real-time Mercalli scale readings, and get instant alerts for seismic shocks. Data can be saved and shared for analysis.
- High-accuracy seismometer
- Seismic wave detection
- Detailed graphical analysis
- Real-time Mercalli scale readings
- Instant alerts for seismic shocks
- Effortless data autosave
- Apple Watch compatibility
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The quake meter is an app which uses the seismograph or seismometer in your phone to measure the strength of vibrations, tremors, earthquakes, and even the vibrations of the human body or any other objects around you. - High-Accuracy Seismometer: Detect vibrations from earthquakes to human movements with precision using your phone's built-in seismograph. - Seismic Wave Detection: Track seismic activities like earthquakes and volcanic eruptions using your phone’s accelerometer. - Detailed Graphical Analysis: Visualize seismic movements on graphs, displaying data across three dimensions for in-depth understanding. - Real-Time Mercalli Scale Readings: Get instant updates on ground motion intensity, with average and max values easily accessible. - Customizable MMI Chart: Tailor MMI charts to display seismic data over your chosen time frames for personalized insights. - Instant Alerts for Seismic Shocks: Stay informed with alerts on sudden accelerations or seismic events, keeping you prepared. - Effortless Data Autosave: Automatically save crucial seismic data in CSV format for detailed post-event analysis. - Comprehensive History Access: Review and share your seismic data history, complete with easily accessible CSV files. - Secure Cloud Storage: Safeguard your seismic data in the cloud, accessible on different devices via social accounts or email. - Apple Watch Compatibility: Seamlessly control your seismic measurements from your Apple Watch device, ensuring minimal interference. - Shareable Insights: Capture and share screenshots of your seismic findings with friends, spreading awareness and knowledge. Using the accelerometer in your phone, our app allows you to detect and record seismic waves generated by earthquakes, volcanic eruptions, avalanches and any other sources of seismic activity. Once the activity is measured, the graph feature presents a record of the ground motion at the point of measurement. Any ground movement or object is presented as a function of time along three Cartesian axes, with the z- axis perpendicular to the Earth's surface and the x- and y- axes parallel to the surface. During a span of measurement, you will track average and max values and see current corresponding Mercalli scale descriptions. You can set up your app to display current acceleration, XYZ or Mercalli scale values on the main screen. What’s more, you can find a second chart on the screen with MMI values which can be customized to display different lengths if you want to see shorter or longer time periods. The app allows you to take a screenshot of the whole view to share it with friends. The alerts feature notifies you about sudden acceleration changes or seismic shocks. Go to the settings screen and setup values you want to get notified after. Autosave allows you to save your data when shocks pass through the setup threshold. You can later view the saved CSV file to see the exact measurements during that time. The history screen allows you to see your saved data with date, time, avg, and max values along with a CSV file from the whole span of measurement. You can also share the data as you please. Keep your data safe with our cloud services, which allow you to create accounts and store your data.. Log in using your social media accounts or email to different devices to see and share your data. Our app comes with a brand new application for Apple Watch devices. You can easily control your measurements with your watch without having to touch your phone. Controlling the measurements with the watch avoids interference! Terms and conditions: https://mysticmobileapps.com/legal/terms/vibrometer Privacy policy: https://mysticmobileapps.com/legal/privacy/vibrometer
DaysBetween
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DaysBetween helps you calculate precise intervals between any two dates, add or subtract time periods, and see clear breakdowns relative to today. Designed for accuracy, clarity, and flexibility. Switch between two display modes — Row (a single interval) and Grid (all intervals at once), optionally include or exclude Week and Month, quickly swap dates, and navigate through your date history. Each calculation comes with structured statistics showing progress across year, quarter, month, and week, with visual indicators that clearly distinguish past and future values. For extra context, the app also provides Western and Chinese horoscope information based on the selected dates — a broader perspective beyond pure numbers. Key features: • Calculate intervals between any two dates • Add or subtract time intervals • Today-relative breakdowns • Row and Grid display modes • Optional Week & Month values • Year, Quarter, Month, and Week statistics • Clear past and future indicators • Western and Chinese horoscope insights • Collapsible cards for an organized layout • Date history navigation • Fast, intuitive date adjustments • Clean, easy-to-use interface
Screenshots
Verdict
The clearest difference is ads: DaysBetween at none against Vibration meter's shown. Vibration meter's advantage is update cadence (monthly vs every 3 months). On price, in-app purchases, device support and iOS requirement 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
Both are free to download. Vibration meter sells 2 in-app purchases, starting at $0.99 per month and DaysBetween sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Vibration meter ships an update monthly, DaysBetween every 3 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | Vibration meter | DaysBetween |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (14 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Monthly — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 16.0 — better | 16.7 |
| Further details — not scored | ||
| Size | 51 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | MYSTIC MOBILE APPS LLC | Dmitrii Sokolov |
In-app purchases
Vibration meter
- Monthly Vibration meter+14 Days trial$0.991 Month
- Annual Vibration meter+14 Days trial$5.991 Year
DaysBetween
- Pro Version$4.99
Questions
Is Vibration meter free?
Is DaysBetween free?
Do Vibration meter or DaysBetween have ads?
Which is updated more often, Vibration meter or DaysBetween?
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