Comparison

CM PM2.5 vs F

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

Head to head
About

CM PM2.5

Features
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การบูรณาการข้อมูลตรวจวัด ข้อมูลพยากรณ์จากแบบจำลองคุณภาพอากาศ ข้อมูลจากภาพถ่ายดาวเทียม ข้อมูลเชิงพื้นที่ และการรายงานอย่างเป็นระบบ เพื่อสนับสนุนการตัดสินใจลดความเสี่ยงและผลกระทบจากปัญหาฝุ่น PM2.5 ในพื้นที่จังหวัดเชียงใหม่ ทำให้ทราบสถานการณ์ปัจจุบัน รวมทั้งได้ทราบแนวโน้มของสถานการณ์ในอนาคตอันใกล้ ซึ่งจะช่วยในการวางแผนให้ความช่วยเหลือบรรเทาปัญหาแก่ประชาชนได้อย่างมีประสิทธิภาพ

About

F

Features
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Protect your devices with a single subscription! Keep your mobile devices safe from cyber threats wherever you go. Our comprehensive cybersecurity solution offers: • Safe Browsing: Automatically block phishing attacks and online scams with advanced link detection. • Secure Wi-Fi: Browse privately and securely on any Wi-Fi network. • VPN Privacy: Encrypt your internet connection to keep your online activities private and secure, and access content safely from anywhere. • Password Manager: Store and access your passwords securely from any device. • ID Monitoring: Keep an eye on your personal information and get alerts for data breaches. • Parental Control: Protect your children from harmful sites with content filtering and screen time limits. Available exclusively for True and dtac customers.

Screenshots

CM PM2.54 screens
F4 screens

Verdict

The call

The clearest difference is ads: CM PM2.5 at none against F's shown. CM PM2.5 also leads on iOS requirement (11.0 vs 17.0). On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CM PM2.5 ships an update every 3 weeks, F every 2 weeks. The most recent releases landed on October 27, 2026 and October 26, 2026 respectively.

Scorecard2 real differences · 4 level
CM PM2.5 versus F: the parameters behind the verdict, then further details
ParameterCM PM2.5F
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size33 MB220 MB
Age rating4+4+
DeveloperChakrit ChotamonsakTRUE CORPORATION PUBLIC COMPANY LIMITED

In-app purchases

None

CM PM2.5

No in-app purchases

None

F

No in-app purchases

Questions

Is CM PM2.5 free?
CM PM2.5 is free to download, with no in-app purchases.
Is F free?
F is free to download, with no in-app purchases.
Do CM PM2.5 or F have ads?
F shows ads; CM PM2.5 does not.
Which is updated more often, CM PM2.5 or F?
CM PM2.5 ships an update every 3 weeks, and F every 2 weeks. Most recently, CM PM2.5 was updated on October 27, 2026 and F on October 26, 2026.

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