Comparison

Blue Map vs SunPath

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

Head to head
About

Blue Map

Access global environmental data, including air and water quality, corporate emissions, and ecological information. Participate in environmental protection by reporting pollution, sharing data, and tracking your low-carbon actions. Visualize environmental conditions with interactive maps and receive AI-driven insights and health alerts.

Highlights
  • Real-time environmental quality data
  • Corporate emissions and performance tracking
  • Public pollution reporting and action
  • Interactive environmental maps
  • AI-powered data insights
  • Personalized health and environmental alerts
Features
Read full description

Blue Map: Your Mobile Portal for Environmental Transparency, Oversight, and Participation We aggregate corporate environmental data, emissions, air/water quality, and ecological info to build a platform where everyone can participate in protecting our planet. 【Data at Your Fingertips】 • Environmental Quality: Real-time air quality in 380 cities & water quality from 1,900+ stations. • Corporate Emissions: Track real-time discharges of 9,000+ air/water polluters. • Corporate Performance: Monitor 6.6M+ enterprises with 1.7M+ violation records. • Carbon Data: Access corporate and regional emissions data for low-carbon action. 【Public Participation】 • Micro-Reporting: Submit pollution leads and track progress, driving thousands of industrial firms to respond and reduce emissions. • One-Key Sharing: Instantly share data on social media, @ authorities to drive action. • Fingertip Environmentalism: Report issues, observe waste sorting, join eco-surveys, log low-carbon acts, and check product footprints with "Carbon-EZ-Check." 【Visual & Interactive Maps】 • 48-Hr Minute-Level Maps: Hourly forecasts for air quality, wind, rain, and typhoons. • Multi-Dimensional Maps: View air/water quality, emissions, corporate records, species distribution, and global solar data in layered visuals. 【AI & Health Features】 • AI Insights: Get plain-English explanations of complex environmental data. • Health Care: Receive alerts for masks, ventilation, air quality, pollen, and outdoor exercise, with personalized risk assessments. Blue Map makes the environment visible and turns your actions into a force for change. 【Honors】 The Blue Map App is developed by the Institute of Public & Environmental Affairs (IPE), a Beijing-based non-profit. Since 2006, IPE has built open environmental data platforms to drive corporate green transformation and improve governance. Awards include: • 2012: Goldman Environmental Prize; 3rd China Soft Science Award. • 2014: Selected for Beijing's first "Green Environmental Protection Theme App." • 2016: Public Participation & Innovation Award (IFCE). • 2017: Founding Member & Vice Chair, Green Consumption and Supply Chain Alliance. • 2018: Vice Chair, China Green Supply Chain Alliance. • 2020: Founding Member, Green Finance Committee (MIIT). • Mar 2023: National award for COVID-19 community guideline research. • Jul 2023: Outstanding Partner, "Whole Value Chain Model for Plastic Pollution Governance" (All-China Environment Federation). • Mar 2024: Council Member, All-China Environment Federation (5-year term). • Jul 2024: Partner, "Swift Action" Tech Initiative (Chaoyang District). 【Contact】 • Website: https://www.ipe.org.cn • Weibo: http://weibo.com/u/5042247906 • Tel: 010-67189470 ext. 8001 【Thanks】 To everyone tracking pollution, monitoring haze, and sharing forecasts—thank you!

About

SunPath

Visualize the sun's path in real-time by pointing your device's camera at the sky. This app overlays the sun's movement directly onto your camera feed, offering a unique perspective on celestial mechanics.

Highlights
  • Real-time sun path visualization
  • Augmented reality camera overlay
  • Celestial movement tracking
  • Intuitive pointing interface
Features
Currently charting
Read full description

SunPath allows you to see the path of the sun through your camera at any given moment. Just point your camera to the sky and it will display the sun’s movement.

Screenshots

Blue Map4 screens
SunPath4 screens

Verdict

The call

The clearest difference is price: Blue Map at Free against SunPath's $1.99. Blue Map also leads on in-app purchases (none vs 1) and review sentiment (64% vs 33%). SunPath's advantage is chart position (#33 vs unranked). On ads, 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

CostPrice · In-app purchases · Ads · Monetization

Blue Map is free to download; SunPath costs $1.99 up front. SunPath sells 1 one-off in-app purchase. Blue Map asks for nothing beyond the download.

UpkeepUpdate frequency

Blue Map ships an update every 2 weeks, SunPath every 2 months. The most recent releases landed on October 4, 2026 and September 21, 2026 respectively.

Scorecard6 real differences · 5 level
Blue Map versus SunPath: the parameters behind the verdict, then further details
ParameterBlue MapSunPath
PriceFree — better$1.99
Rating5.0 (2 ratings) — better—
Positive reviews64.5% of reviews — better33.3% of reviews
Number of ratings2 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
Best chart rank—#33 — better
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS1515.0
Further details — not scored
Size127 MB38 MB
Age rating4+4+
Developer北京市朝阳区公众环境研究中心Romeo Goosens

Customer experience

Blue Map

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews76 reviews
Positive64.5%
Neutral13.2%
Negative22.4%

SunPath

Written reviews12 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Blue Map

No in-app purchases

1 purchases

SunPath

One-time1
  • Premium Recording$4.99

Questions

Is Blue Map free?
Blue Map is free to download, with no in-app purchases.
Is SunPath free?
SunPath costs $1.99, and also offers in-app purchases.
Do Blue Map or SunPath have ads?
Neither Blue Map nor SunPath shows ads.
Which is updated more often, Blue Map or SunPath?
Blue Map ships an update every 2 weeks, and SunPath every 2 months. Most recently, Blue Map was updated on October 4, 2026 and SunPath on September 21, 2026.

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