Sismologia vs GTForce
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sismologia
Get instant, reliable information on the latest earthquakes and tremors worldwide. Receive real-time seismic data from multiple official sources and get immediate notifications for events near your location without needing to keep the app open.
- Real-time seismic data
- Multiple official sources
- Instant earthquake notifications
- Location-based alerts
- Ad-free subscription option
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Seismology is an independent app. It is NOT affiliated with or endorsed by any government agency or public entity, and it does not officially represent one or provide government services. It only republishes data already published by the official agencies listed in full at the end of this description. Seismology brings together, in one app, earthquake reports from six official seismological agencies — USGS, CSN, SSN, EMSC, GeoNet and JMA — plus tsunami bulletins from the three NOAA tsunami centers, and notifies you the moment an earthquake happens near you. REAL-TIME INFORMATION Push notifications for earthquakes in the region, country, or magnitude range you care about. Set your threshold: 3.0 and up, 4.5, 5.5 — whatever fits you. DATA FROM OFFICIAL SOURCES Earthquake data comes from these six agencies and no others: USGS (United States), Centro Sismológico Nacional (CSN, Chile), Servicio Sismológico Nacional (SSN, Mexico), EMSC (Euro-Mediterranean), GeoNet (New Zealand) and JMA (Japan). Every event shows which agency reported it. Tsunami bulletins come from these three sources and no others, all part of NOAA (United States): the National Weather Service (NWS), the National Tsunami Warning Center (NTWC) and the Pacific Tsunami Warning Center (PTWC). INTERACTIVE MAP See all recent earthquakes on a map with markers sized by magnitude and coloured by depth. Zoom to your region and tap any event for full detail. FULL EVENT DETAILS For each earthquake: magnitude, depth, local and UTC times, distance from your location and a link to the official agency report. COMMUNITY COMMENTS Post how you felt the quake and read what others in the area are reporting. Useful to compare perceived intensity before official shake-map data arrives. FILTERS AND PREFERENCES Filter by agency, minimum magnitude, maximum age and distance. Preferences are saved and synced across your devices. SUBSCRIPTIONS Subscribe to specific regions (by country or by coordinates) and receive only the alerts that matter to you. Great if you live in an active zone or have family in another. PRIVACY No personal data is required to use the app. Location is used only to compute distance to the epicentre and filter nearby alerts; processing happens on the device. FREE The app is free. An optional in-app purchase removes advertising; every core feature works without paying. Seismology does not predict earthquakes and is not a replacement for official early-warning systems (ShakeAlert in the US, SASMEX in Mexico, JMA in Japan). It is an informational app showing events that have already occurred, as reported by the official agencies. OFFICIAL DATA SOURCES — COMPLETE LIST Earthquakes: USGS (United States): earthquake.usgs.gov · CSN – Centro Sismológico Nacional, University of Chile: sismologia.cl · SSN – Servicio Sismológico Nacional, UNAM (Mexico): ssn.unam.mx · EMSC (Euro-Mediterranean): emsc-csem.org · GeoNet (New Zealand): geonet.org.nz · JMA (Japan): jma.go.jp Tsunamis: NWS – National Weather Service, NOAA (United States): weather.gov · NTWC – National Tsunami Warning Center, NOAA: tsunami.gov · PTWC – Pacific Tsunami Warning Center, NOAA: tsunami.gov Ad-Free Subscription If you'd like to support us and remove advertising from the app, you can subscribe directly from within the app via the "Remove Ads" option. Please note the following: It is a monthly subscription of $0.49. Payment will be charged to your iTunes account at confirmation of purchase. The subscription will auto-renew unless auto-renewal is turned off at least 24 hours before the end of the current period. The renewal charge will be applied within 24 hours prior to the end of the current period, at the same price of $0.49. You can cancel or modify your subscription at any time from your account settings after purchase. You can review the app's terms of use at the following link: https://www.birdie.cl/terminos-de-uso/
GTForce
This system helps individuals and teams organize their tasks and improve workflow efficiency. It provides tools for better work management and task handling.
- Work management system
- Task organization
- Workflow improvement
- Team collaboration tools
- Efficient task handling
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This is a visiting system which aims at helping people manage their work better.
Screenshots
Verdict
The clearest difference is rating: GTForce at 5.0 against Sismologia's 3.7. GTForce also leads on in-app purchases (none vs 1) and ads (none vs shown). Sismologia's advantage is ratings volume (3 vs 1). On price, update cadence, 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. Sismologia sells 1 in-app purchase, starting at $0.49 per month. GTForce asks for nothing beyond the download.
GTForce holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Sismologia ships an update every 6 days, GTForce weekly. The most recent releases landed on September 17, 2026 and June 11, 2026 respectively.
| Parameter | Sismologia | GTForce |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 6 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 338 MB | 54 MB |
| Age rating | 4+ | 17+ |
| Developer | Birdie | Shenzhen Smoore Technology Limited |
Customer experience
Sismologia
GTForce
In-app purchases
Sismologia
- Remove Ads$0.491 Month
GTForce
No in-app purchases









