Blue Map vs SunPath
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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!
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.
- Real-time sun path visualization
- Augmented reality camera overlay
- Celestial movement tracking
- Intuitive pointing interface
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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
Verdict
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
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.
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.
| Parameter | Blue Map | SunPath |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 64.5% of reviews — better | 33.3% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Best chart rank | — | #33 — better |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 15 | 15.0 |
| Further details — not scored | ||
| Size | 127 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | 北京市朝阳区公众环境研究中心 | Romeo Goosens |
Customer experience
Blue Map
SunPath
In-app purchases
Blue Map
No in-app purchases
SunPath
- Premium Recording$4.99









