Comparison

DepremAlarm vs TerraWatch

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

Head to head

Farm Monitoring & Alert System

Free

☀️ Weather

No ratingsView app →

About

DepremAlarm

Features

Read full description

Deprem Alarm, USGS verilerini kullanarak dünya genelindeki depremleri gerçek zamanlı olarak takip etmenizi sağlar. Son depremler listesini inceleyin, harita üzerinde görüntüleyin ve bulunduğunuz konuma yakın depremleri anında öğrenin. ÖZELLİKLER: • Gerçek zamanlı deprem listesi — 5 dakikada bir otomatik güncelleme • Harita görünümü — tüm depremleri dünya haritasında görün • Yakınımdaki depremler — 500 km çevresindeki sarsıntılar • Anlık bildirim — belirlediğiniz magnitüd eşiğini geçen depremler için uyarı • Magnitüd filtresi — sadece önemli depremleri görüntüleyin • Derinlik ve konum bilgisi • Magnitüd skalası ile renk kodlaması Veri kaynağı: USGS (ABD Jeoloji Araştırmaları Kurumu) — dünyanın en güvenilir deprem veri kaynağı.

About

TerraWatch

Features

Read full description

TerraWatch is a real-time monitoring app designed for farmers and landowners. FIELD MANAGEMENT Mark your fields on the map and view NDVI vegetation analysis via satellite imagery. Get a dedicated weather forecast for each individual field. WILDFIRE ALERTS Track high-confidence active fire detections near you using NASA FIRMS satellite data. Receive instant notifications when a new fire is detected within your chosen radius. EARTHQUAKE ALERTS Monitor real-time M4.5+ seismic activity from the USGS database. Get notified immediately when ground movement is detected near your location. WEATHER FORECAST View precipitation probability, temperature, wind speed, and ET₀ evapotranspiration data for your exact location. Irrigation need and frost risk are calculated automatically. PRO FEATURES • 14-day field weather forecast • 250 km, 500 km and 1000 km notification radius • Satellite map layer for advanced terrain view Data sources: NASA FIRMS, USGS, Open-Meteo, Sentinel Hub

Screenshots

DepremAlarm4 screens

TerraWatch4 screens

Verdict

The call

The clearest difference is in-app purchases: DepremAlarm at none against TerraWatch's 1. TerraWatch's advantage is iOS requirement (17.0 vs 26.2). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TerraWatch sells 1 one-off in-app purchase. DepremAlarm asks for nothing beyond the download.

UpkeepUpdate frequency

DepremAlarm ships an update every 3 days, TerraWatch every 5 days. The most recent releases landed on October 19, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 4 level

DepremAlarm versus TerraWatch: the parameters behind the verdict, then further details
Parameter	DepremAlarm	TerraWatch
Price	Free	Free
Update frequency	Every 3 days — better	Every 5 days
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad — better	iPhone
Requires iOS	26.2	17.0 — better
Further details — not scored
Size	5 MB	1 MB
Age rating	4+	4+
Developer	ATILLA KUSEYRI	Tolga Ulutas

In-app purchases

None

DepremAlarm

No in-app purchases

1 purchases

TerraWatch

One-time1

TerraWatch Pro$2.99

Questions

Is DepremAlarm free?

DepremAlarm is free to download, with no in-app purchases.

Is TerraWatch free?

TerraWatch is free to download, with in-app purchases available.

Do DepremAlarm or TerraWatch have ads?

Neither DepremAlarm nor TerraWatch shows ads.

Which is updated more often, DepremAlarm or TerraWatch?

DepremAlarm ships an update every 3 days, and TerraWatch every 5 days. Most recently, DepremAlarm was updated on October 19, 2026 and TerraWatch on October 8, 2026.