# Blue Sky Guardian

> Blue Sky Guardian (iPhone/iPad app by BLUE SKY ENERGY TECHNOLOGY LIMITED.)

- Source: https://appshunter.io/ios/app/blue-sky-guardian/id1512909640 (this page in markdown: same URL + `.md`)
- Developer: [BLUE SKY ENERGY TECHNOLOGY LIMITED](https://appshunter.io/developer/1324408986)
- Category: Productivity, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 9.0 · 65 MB
- Languages: English, Chinese
- Released: 2020-09-04
- Data updated: 2026-05-14
- User reviews in markdown: https://appshunter.io/ios/app/blue-sky-guardian/id1512909640/reviews.md

## What is Blue Sky Guardian?

We help you to create lively communities by optimizing energy efficiency & improving indoor air quality.
Blue Sky Energy Technology is a building environment data management specialist covering data collection, visualization, analysis and people engagement.
Download the Blue Sky app to gain transparency of both energy consumption and indoor air quality on a real-time basis.
Features:
- Visualize energy consumption & indoor air quality real-time in graphical illustration
- Compare energy usage & indoor air quality over time and with other locations
- Set daily or weekly target to ensure your usage level or IAQ factors are on track
- Receive notification whenever irregular usage or poor air condition happens
- Subscribe and gain insights from the customized action tips, both energy-saving and IAQ


## Version history (last 5 releases)

### 1.0.5 — 2021-07-16

Minor bug fixes

### 1.0.4 — 2021-06-24

Enhanced graphs magnifying and shrinking function. Some icons and button updates for easier comprehension.

### 1.0.3 — 2021-05-05

Minor bug fixes.
Add public display mode.

### 1.0.2 — 2020-10-17

Improvements:
  - Use grid layout in both Energy and IAQ home page
  - Display share usage info if needed
  - Better readability of distribution graph and comparison chart
  - Display full tooltip even on the right hand side

### 1.0.1 — 2020-09-13

Improvements:
  - Update energy tracking page UI display for month tab & year tab
  - Improve notification icon's flexibility

Bug fixes:
  - Fix the electricity fee calculation
  - Fix the CO2 consumption calculation

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## More apps by BLUE SKY ENERGY TECHNOLOGY LIMITED

- [Blue Sky Dashboard](https://appshunter.io/ios/app/blue-sky-dashboard/id1467138197)
- [SEE - Smart Energy Community](https://appshunter.io/ios/app/see-smart-energy-community/id1641868579)
- [BlueSky Plus](https://appshunter.io/ios/app/bluesky-plus/id6475001720)

All apps by BLUE SKY ENERGY TECHNOLOGY LIMITED: https://appshunter.io/developer/1324408986

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-14.*