Vibration Meter, seismograph vs Credibility Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vibration Meter, seismograph
This application uses your phone's accelerometer to measure and record vibrations from various sources, including earthquakes and everyday objects. It displays ground motion on a graph and uses an instrumental intensity scale for analysis. You can also monitor and share your measurement results.
- Measures vibration strength
- Detects seismic waves
- Uses accelerometer for analysis
- Displays ground motion graph
- Utilizes instrumental intensity scale
- Monitors and shares results
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Vibration meter is an app called seismograph or seismometer, which measures the strength of vibration, quakes, earthquakes, vibrations of the human body or any other objects around you. Our app allows for detecting and recording of seismic waves generated by earthquakes, volcanic eruptions, avalanches and other sources of vibration and shocks. Accelerometer in your mobile phone is used for detection of vibrations and measurement analysis. Graph presents a record of the ground motion at a measuring point. Ground movement or an object is presented as a function of time in the three Cartesian axes, with the z axis perpendicular to the Earth's surface and the x- and y- axes parallel to the surface. Mercalli intensity scale is a seismic scale used for measuring the intensity of an earthquake. It measures the effects of an earthquake and it is distinct from the moment of magnitude. Richter Scale assigns a magnitude number to quantify the energy released by an earthquake. Peak Ground Acceleration (PGA) is equal to the maximum ground acceleration that occurred during earthquake shaking at location. PGA is equal to the amplitude of the largest absolute acceleration recorded on an accelerogram at a site during a particular earthquake. In this app we use Instrumental Intensity Scale (developed by The United States Geological Survey) which maps peak ground acceleration and peak ground velocity on an intensity scale similar to the felt Mercalli Scale. These values are used to create shake maps by seismologists on around the world. Mercalli Intensity Scale distinguishes the following levels of vibration and impact damage: I. Instrumental - Not felt. Recorded by seismographs. II. Weak - Felt only on top floors of high buildings. III. Slight - Felt indoors, like a passing light truck. IV. Moderate - Windows, doors rattle. Like passing train. V. Rather Strong - Felt by all. Small objects upset. VI. Strong - Books off shelves. Trees shake. Damage. VII. Very Strong - Difficult to stand. Buildings damaged. VIII. Destructive - Significant damage. Trees broken. IX. Violent - General panic. Serious damage. Cracks. X. Intense - Most buildings destroyed. Rails bent. XI. Extreme - Rails bent greatly. Pipelines destroyed. XII. Catastrophic - Near total damage. This app allows you monitor and share the results of your measurements with other users. Measure and monitor all vibration and shocks using smartphone or tablet!
Credibility Analyzer
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Credibility Analyzer is a Safari Web Extension that helps you judge whether a webpage, text you select, or a photo you share is reliable. Open a page and run an analysis from the toolbar, or share selected text or a photo into the app. You’ll get: • A credibility / factualness score from 1–10 • A short justification of that score • Clear bullet-point findings (3, 4, or 5 — configurable) • Source links when Gemini web grounding returns citations • Results in the same language as the page when possible AI models (bring your own API key) • Gemini Flash (latest) — Google’s current Flash model with live web grounding for fact-checking • Claude Sonnet — Anthropic’s Sonnet for knowledge-based analysis • GPT-6 Sol — OpenAI’s GPT-6 Sol for knowledge-based analysis Getting started The host app walks you through a short checklist: 1. Add an API key for Gemini, Claude, or OpenAI 2. Try fact-checking a sample myth with Share → Credibility Analyzer 3. Optionally enable the Safari extension in Settings → Apps → Safari → Extensions How to use (Safari toolbar) 1. Enable Credibility Analyzer in Settings → Apps → Safari → Extensions and grant site access 2. Visit a normal webpage 3. Tap the Credibility Analyzer toolbar button to analyze the page or selected text 4. Choose a model and run the analysis 5. Review the score, findings, and sources How to use (Share) 1. Select text in Safari (or another app), or share a photo or screenshot 2. Tap Share → Credibility Analyzer 3. Review the credibility results in the Share extension Privacy • Analysis runs only when you start it • Page content, a photo you share, and (optionally) the URL if you enable “Include URL context” are sent to the AI provider you selected, using your API key • API keys go only to the provider you chose — never to us • The developer does not run a backend that stores your page content • API keys stay in Safari extension / App Group storage on your device • No ads, no account required from us • Anonymous, privacy-first usage analytics (Aptabase) — page content and API keys are never sent Requirements • iPhone or iPad with Safari that supports Safari Web Extensions • An API key from Google AI Studio, Anthropic, and/or OpenAI for the models you want to use Notes • Safari and system pages cannot be analyzed • Cloud AI usage is billed by the provider under your account with them • Enable the extension and allow website access after installing the app Make complex articles easier to skim — and easier to trust or question — without leaving Safari.
Screenshots
Verdict
The clearest difference is in-app purchases: Credibility Analyzer at none against Vibration Meter, seismograph's 1. Credibility Analyzer also leads on update cadence (weekly vs every 7 months). Vibration Meter, seismograph's advantage is iOS requirement (12.0 vs 17.0). On price, ads and device support 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, seismograph sells 1 one-off in-app purchase. Credibility Analyzer asks for nothing beyond the download.
Vibration Meter, seismograph ships an update every 7 months, Credibility Analyzer weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | Vibration Meter, seismograph | Credibility Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (732 ratings) — better | — |
| Positive reviews | 42.5% of reviews | — |
| Number of ratings | 732 — better | — |
| Update frequency | Every 7 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 18 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | ExaMobile S.A. | Evergreen Labs |
In-app purchases
Vibration Meter, seismograph
- Remove ads$1.99
Credibility Analyzer
No in-app purchases
Questions
Is Vibration Meter, seismograph free?
Is Credibility Analyzer free?
Do Vibration Meter, seismograph or Credibility Analyzer have ads?
Which is updated more often, Vibration Meter, seismograph or Credibility Analyzer?
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