PM2.5台灣 vs Air Alarm G
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PM2.5台灣
Stay informed about PM2.5 air quality in Taiwan. Receive custom notifications for high pollution levels and track real-time rankings across different regions.
- Real-time PM2.5 concentration tracking
- Customizable pollution level notifications
- Nationwide and regional rankings
- Alerts for exceeding pollution thresholds
- Daily time-based reminders
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知道嗎?台灣的PM2.5污染情況並不如想像中的樂觀,尤其中南部地區出現有紫爆之稱的"非常高濃度(等級10)"更是時有所聞,北部地區的朋友們也不能掉以輕心,處於PM2.5濃度中(等級4)的地區每天相當於把三根煙抽進肚子裡;一起來關心您所在地區的PM2.5濃度,自訂每日時間(ex.出門前)濃度通知,並且在濃度超標時通知您,還有全國即時濃度排行、五都排行、縣市排行,讓您掌握全台空氣最乾淨的與最差的究竟是哪些地方
Air Alarm G
Receive real-time, minute-by-minute alerts for ultrafine dust levels. This app provides instant notifications when air quality changes, utilizing precise sensor technology for accurate monitoring.
- Real-time ultrafine dust monitoring
- Minute-by-minute air quality updates
- Instant alerts for air quality changes
- Powered by Gonggam Sensor technology
- Precise air quality tracking
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Monitor PM₁.₀ in real time with minute-by-minute updates. Receive instant notifications when air quality changes so you can respond quickly. Powered by GGSensors technology, the app delivers accurate data from both GGSensors 1-minute monitors and hourly national monitoring stations across South Korea.
Screenshots
Verdict
The clearest difference is review sentiment: Air Alarm G at 100% against PM2.5台灣's 17%. PM2.5台灣's advantage is update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (7.0 vs 17.2). On price, ads, in-app purchases and monetization model 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.
PM2.5台灣 ships an update every 2 weeks, Air Alarm G every 6 weeks. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.
| Parameter | PM2.5台灣 | Air Alarm G |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | 100.0% of reviews — better |
| Update frequency | Every 2 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 7.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 9 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | YEH TSUNG MING | 주식회사 공감센서 |
Customer experience
PM2.5台灣
Air Alarm G
In-app purchases
PM2.5台灣
No in-app purchases
Air Alarm G
No in-app purchases
