Geology vs LastDrop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Geology
Read full descriptionHide full description
The main objective of this application is to inform the residents of Istanbul about the geological structure at the location where their homes or workplaces are located, prior to the expected earthquake of Istanbul. FEATURES: • You can receive instant notifications about critical earthquakes. • You can view the latest earthquakes (last 24 hours and last 7 days) with AFAD's data. • You can view the fault lines all over the world or only in Türkiye on the map. If you want, you can hide the fault lines completely. • You can see your vertical distance to the nearest fault line with dashed lines. • You can see your distance to the nearest fault line in km. • You can learn your approximate location provided by operators from their base stations with the "WHERE AM I" command via SMS. Note: Your operator may charge an SMS fee for this process. • 112 call feature within the application. The original geological map has been created by the Istanbul Metropolitan Municipality. The application or including maps does not have the characteristic of an official document, in issues related to human life and responsibility arising from the use of technical studies as a reference does not belong to the developer. This app is built solely and exclusively for iPhones and iPads using Apple's native development language and tools which guarantees top performance and future maintainability.
LastDrop
Read full descriptionHide full description
LastDrop lets you track the fill levels of freshwater resources — dams, lakes, rivers, and aquifers — around the world in real time. KEY FEATURES • Interactive Map — View 65+ water sources across 9 countries with color-coded pins. Blue means healthy, yellow is a warning, red indicates critical levels. • Animated Fill Gauge — Visualize each water source's fill percentage with a live wave animation. • Detailed Information — Capacity, current water level, 12-month trend chart, and data source attribution. • Favorites — Add important water sources to your favorites for quick access. • Comparison — Compare up to 3 water sources side by side to easily spot differences. • Smart Search — Filter by region, type, or status. • Instant Notifications — Receive automatic alerts when your favorite sources drop to critical levels. • Offline Access — View previously loaded data even without an internet connection. • Dark/Light Theme — Adapts to your device settings or choose manually. • Turkish & English — Full support in both languages. DATA SOURCES Data is updated every 6 hours from official sources including Turkey (ISKI, DSI, ASKI, IZSU, BUSKI), USA (USBR, CDEC, USGS), Spain (SAIH), Australia (WaterNSW), South Africa (DWS), Brazil (ANA), India (CWC), Egypt (MWRI), and China (MWR). Stay informed about water resources. Make conscious decisions.
Screenshots
Verdict
The clearest difference is ads: LastDrop at none against Geology's shown. LastDrop also leads on update cadence (every 3 months vs every 26 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. Neither carries in-app purchases, so what you see is what you pay.
Geology ships an update every 26 months, LastDrop every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Geology | LastDrop |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 26 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 26 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Mehmet Bayram | Alper Emin Yardimci |
In-app purchases
Geology
No in-app purchases
LastDrop
No in-app purchases









