SinEnvironment vs Haze & PSI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SinEnvironment
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Looking for a comprehensive solution to manage your information or want to know the weather in Singapore? Our app is the perfect answer! Integrating information from weather forecast, humidity, wind direction to air quality, our app helps you to be best prepared for any weather conditions. Key features: - 4-day weather forecast: Always know the weather information for the next 4 days, helping you plan your activities perfectly. - 24-hour weather forecast: Get detailed weather updates for the next 24 hours, ensuring you are always ready to deal with any changes. - 2-hour weather forecast: Accurate weather information for the next 2 hours, ideal for short-term activities. - Relative humidity: Monitor humidity to protect your health and property from the effects of the weather. - Wind direction: Get updated wind direction so you can prepare for outdoor activities. - Air Temperature: Detailed information on temperature helps you choose the right clothes. - Rainfall: Forecast rainfall so you are never surprised by sudden rains. - Index PM2.5: Monitor air quality to protect the health of you and your family. User Benefits: Convenient and fast: All the weather information you need is in one app. Save time: No more worrying about searching for weather information from different sources. Safer: With detailed updates on air quality and weather conditions, you will always choose the best option. Optimized user experience: Friendly and easy-to-use interface, suitable for all ages. Download our app now to experience convenience and peace of mind in all your daily activities! Don't miss the opportunity to become a smart user with our maximum support. Let us accompany you on every journey in Singapore.
Haze & PSI
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Haze & PSI brings Singapore's PSI and Malaysia's Air Pollutant Index (IPU/API) together in one simple app. Check the haze where you are, see how air quality has moved over the past day, week or month, and get an optional alert when it turns unhealthy, and again when it recovers. SINGAPORE • Official 24-hour PSI and 1-hour PM2.5 from NEA, by region (North, South, East, West, Central) • Regional map with colour-coded badges • Switch between PSI and PM2.5 MALAYSIA • Hourly IPU/API readings from DOE Malaysia's APIMS monitoring stations • Browse by state and federal territory, then tap a state to see each station, including KL, Selangor, Johor and Sarawak • Mark favourite states so they stay at the top of the list • Malaysia readings are IPU/API only. PM2.5 and the map are not available for Malaysia. TRENDS • 24-hour, 7-day and 30-day charts • Singapore: all regions or one region • Malaysia: pick a state, then a station • See which reading is highest and lowest right now UNHEALTHY-AIR ALERTS (OPTIONAL) • Choose Singapore, all of Malaysia, or only the Malaysian states you care about • For a Malaysian state, alerts use the highest station reading in that state • An alert each hour while the reading is Unhealthy (101 and above), and one notice when it returns to healthy • Notifications need your permission and can be turned off at any time in Notification settings CROSSING THE CAUSEWAY? Switch between Singapore and Malaysia from the location chip at the top of the screen. Useful for Johor–Singapore commuters and anyone travelling between the two. EASY TO READ Readings use familiar bands: Good (0–50), Moderate (51–100), Unhealthy (101–200), Very Unhealthy (201–300) and Hazardous (above 300), with short guidance for each band. DATA SOURCES • Singapore: National Environment Agency (NEA), via data.gov.sg • Malaysia: Department of Environment (DOE) Malaysia, Air Pollutant Index Management System (APIMS) Readings are refreshed hourly. Times are shown in Singapore/Malaysia time (UTC+8). The app interface is in English. DISCLAIMER Haze & PSI is not an official government app and is not affiliated with NEA or DOE Malaysia. For official readings and health advisories, refer to NEA and DOE Malaysia (APIMS).
Screenshots
Verdict
The clearest difference is ads: SinEnvironment at none against Haze & PSI's shown. 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.
| Parameter | SinEnvironment | Haze & PSI |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 8 days |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Hung Dang | KingRex Solution |
In-app purchases
SinEnvironment
No in-app purchases
Haze & PSI
No in-app purchases









