Comparison

SeismoCloud vs Seismometer ∞

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

Head to head
About

SeismoCloud

This app transforms your smartphone into a seismometer to detect earthquakes. It sends early warning alerts to users in affected areas, helping them receive notifications before feeling the tremors. Contribute to a scientific research project by simply installing and running the app.

Highlights
  • Smartphone seismometer
  • Early earthquake alerts
  • Crowdsourced data collection
  • Vibration detection
  • Privacy protection
  • Low power consumption
Features
Read full description

SeismoCloud is a crowdsourcing project whose aim is to detect earthquakes using smartphones and Internet-of-Things devices as seismometers. In the event of an earthquake, SeismoCloud sends an Early Warning, i.e. an immediate alert, via smartphone notification to the citizens of the provinces involved. - When your phone is on standby and resting on a table, it turns into an online seismometer. - Thousands of smartphones like yours will allow you to monitor the entire territory. - In the event of an earthquake, an immediate alert will be sent to those in areas where damage could occur. (We don't send alerts yet, we will when we reach a certain number of active apps) - The alert (it's a notification) travels faster than the seismic wave, so many will be able to receive it a few seconds or tens of seconds before they feel the earthquake. The location is needed to locate the vibrations on the map and thus detect potential earthquakes, but, to protect privacy, neither the name of the seismometer, the type of device, nor the precise location are shown on the map. SeismoCloud is a crowdsourcing project: everyone contributes by simply installing the app. The combination of all the small contributions is a great service for everyone. SeismoCloud is a scientific research project carried out by researchers of the University La Sapienza of Rome (Department of Informatics) and the Italian National Institute of Geophysics and Volcanology (Seismology and Tectonophysics Section). With everyone's contribution we are testing the system and we will be ready to send the alarms when we reach a certain number of active apps. Help us to spread the app among your acquaintances. HOW IT WORKS The app, when the phone or tablet is not in use and is resting on a horizontal surface, uses the internal sensor of the smartphone (accelerometer) to detect vibrations in the surrounding environment, behaving like a real seismometer (i.e. a seismograph without paper and nib, which sends measurements to a central computer) and thus contributing to the detection of earthquakes. In fact, when many smartphones in the same area detect a vibration at the same time, an algorithm on the central computer compares the data received and makes an estimate of the distance within which the earthquake may pose a danger to the population. In case of danger in the province where we are (for example, the province where we live or the province of the place where we are on vacation, etc.), we will be sent a notification that warns us of the earthquake in progress. The notification is sent a few seconds after the tremor begins at the epicenter, and therefore can reach us before the seismic wave (because it travels more quickly). The application has been developed in such a way as to minimize power and bandwidth consumption, while still ensuring constant detection throughout the day. Visit www.seismocloud.com to learn more.

About

Seismometer ∞

Features
Read full description

Seismometer ∞ — earthquake detector, vibration meter, and seismograph in your pocket. Turn your iPhone into a precision seismometer and vibration meter. Detect tremors, monitor seismic waves, and visualize ground motion in real time. • Real-time seismograph visualization with precision charts • Track X, Y, Z axis vibration readings with detailed graphs • Monitor earthquake tremors and ground movement • Professional-grade sensitivity for reliable measurements • Clean, intuitive interface for easy data interpretation Perfect for earthquake awareness, physics experiments, scientific research, and education. Whether you're a researcher, student, or curious explorer, discover the hidden world of seismic activity. Privacy Policy: https://www.icloud.com/pages/0bcX7C5KVMC35FbMWk-FNfjWg Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SeismoCloud4 screens
Seismometer ∞2 screens

Verdict

The call

The clearest difference is ads: SeismoCloud at none against Seismometer ∞'s shown. SeismoCloud also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17.0). Seismometer ∞'s advantage is update cadence (every 2 weeks vs every 6 months). On price 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SeismoCloud ships an update every 6 months, Seismometer ∞ every 2 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 4 level
SeismoCloud versus Seismometer ∞: the parameters behind the verdict, then further details
ParameterSeismoCloudSeismometer ∞
PriceFreeFree
Positive reviews16.7% of reviews—
Update frequencyEvery 6 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better17.0
Further details — not scored
Size49 MB16 MB
Age rating4+4+
Developerinformatica@sapienza辰巳家有限公司

In-app purchases

None

SeismoCloud

No in-app purchases

None

Seismometer ∞

No in-app purchases

Questions

Is SeismoCloud free?
SeismoCloud is free to download, with no in-app purchases.
Is Seismometer ∞ free?
Seismometer ∞ is free to download, with no in-app purchases.
Do SeismoCloud or Seismometer ∞ have ads?
Seismometer ∞ shows ads; SeismoCloud does not.
Which is updated more often, SeismoCloud or Seismometer ∞?
SeismoCloud ships an update every 6 months, and Seismometer ∞ every 2 weeks. Most recently, SeismoCloud was updated on November 6, 2026 and Seismometer ∞ on November 5, 2026.

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