Timer4u vs TerraWarn
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Timer4u
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This is a Personal Timer App with customizable features: โข Calculate Timer End Time: Easily calculate and set the exact time when the timer will go off. โข Percentage Display: View the remaining time as a percentage, providing a clear visual indicator of time left. โข Custom Motivational Text: Set and display any text, such as motivational messages, to keep you inspired. โข Custom Background Image: Personalize your timer by setting your own images as the background. โข Text Customization: Change the text color and adjust the font size to suit your preferences. With these features, you can use the app as your own personal clock timer, tailored to your specific needs. Developed for personal study sessions. This timer helps maintain a quiet environment. For situations where you need a guaranteed notification or an alarm sound, please use the built-in iOS timer after measuring the desired time with this app. How the Developer Uses It: To create a situation where I start studying even when I lack motivation, I set the timer for "just 15 minutes." In most cases, I continue working even after the 15 minutes are up, so I use it as a "motivation switch." When I'm busy, it helps me accurately calculate what time it will be after a certain number of minutes. This prevents mistakes that can happen when trying to calculate time mentally during complex tasks.
TerraWarn
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TerraWarn helps you stay informed about natural hazards and prepare for emergencies with hazard alerts, interactive maps, preparedness tools, emergency resources, and safety guidance. IMPORTANT DISCLAIMER TerraWarn is an independent application. It is NOT affiliated with, endorsed by, authorized by, or operated by any government, government agency, emergency service, or public authority. TerraWarn does not represent a government entity and is not a government service. Information is provided for informational and educational purposes only. It does not replace official emergency alerts, instructions from authorities, professional medical advice, or emergency services. In an emergency, contact local emergency services and follow official instructions. SOURCES OF INFORMATION TerraWarn uses information obtained or adapted from these publicly available sources: โข U.S. Geological Survey (USGS) โ Earthquakes https://earthquake.usgs.gov/ โข NASA EONET โ Natural events https://eonet.gsfc.nasa.gov/ โข Global Disaster Alert and Coordination System (GDACS) โ Disaster alerts https://www.gdacs.org/ โข U.S. Centers for Disease Control and Prevention (CDC) โ Health & emergency preparedness https://www.cdc.gov/ โข American Red Cross โ First aid & preparedness https://www.redcross.org/ โข Ready.gov (U.S. Department of Homeland Security) โ Hazard safety & preparedness https://www.ready.gov/ โข AirNow.gov (U.S. Environmental Protection Agency) โ Air quality & wildfire smoke https://www.airnow.gov/ โข OpenStreetMap โ Map data and nearby-facility locations (hospitals, pharmacies, fire and police stations) https://www.openstreetmap.org/ Consult the original sources and relevant local authorities for authoritative and current information. HAZARD ALERTS View supported events including earthquakes, wildfires, floods, storms, volcanic activity, and other natural hazards. Choose the hazards you want to follow and configure available severity preferences. INTERACTIVE HAZARD MAP Explore supported hazard events on a map and view available details such as location, magnitude, depth, affected area, and event information. Where available, access the corresponding original source. EMERGENCY CONTACTS Quickly access emergency calling features and contact information. Emergency numbers vary by country and region and should be verified with local authorities. EMERGENCY GUIDES Access general safety information for earthquakes, floods, wildfires, hurricanes, severe storms, tornadoes, volcanic events, and other supported hazards. Guidance is based on the sources listed above and does not replace official instructions. FIRST AID & MEDICAL GUIDES Access general information about CPR, severe bleeding, burns, choking, stroke, heart attack, seizures, poisoning, and broken bones. Relevant content is based on publicly available American Red Cross and CDC guidance. Medical information is educational only and does not replace professional medical training, diagnosis, treatment, or emergency medical care. PREPAREDNESS Create emergency checklists and track essential supplies such as water, food, first-aid items, flashlights, radios, and important documents. MEDICAL PROFILE Store emergency information you choose to enter, including blood type, allergies, medications, and medical notes. This organizational feature does not provide diagnosis or treatment. NEARBY HELP Use location-based features to find supported nearby hospitals, pharmacies, fire stations, police stations, and other facilities, sourced from OpenStreetMap. Always verify critical information during an emergency. PRIVACY No account is required. Location is used when needed for location-based features such as nearby hazards and facilities. TerraWarn is an independent informational and preparedness app, NOT a government application. For authoritative emergency information, consult the original sources above and follow instructions from local authorities.
Screenshots
Verdict
The clearest difference is price: Timer4u at Free against TerraWarn's $0.39. Timer4u also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.4). On in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Timer4u is free to download; TerraWarn costs $0.39 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Timer4u | TerraWarn |
|---|---|---|
| Price | Free โ better | $0.39 |
| Update frequency | โ | Every 2 weeks |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 12.0 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 26 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | motoki furusawa | mohamed oumaalla |
In-app purchases
Timer4u
No in-app purchases
TerraWarn
No in-app purchases









