# AirSafe TFA

> AirSafe TFA (iPhone/iPad app by Ryan Knightly.)

- Source: https://appshunter.io/ios/app/airsafe-tfa/id1247625833 (this page in markdown: same URL + `.md`)
- Developer: [Ryan Knightly](https://appshunter.io/developer/1022878694)
- Category: Weather, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 9.0 · 19 MB
- Languages: English
- Released: 2017-06-14
- Data updated: 2025-01-09
- User reviews in markdown: https://appshunter.io/ios/app/airsafe-tfa/id1247625833/reviews.md

## What is AirSafe TFA?

AirSafe is a Houston-based project that provides both live and historical readings of pollutant levels in the atmosphere.

Live Data
The top half of the display shows your distance to the nearest gas sensor, along with the live reading from that sensor. AirSafe then helps you interpret what that pollution level means by showing safety thresholds.

Sensor Map
A map shows all of the sensor locations as pins with the measured pollution level at that sensor.

Historical Data
A graph of a sensor's past observations can be pulled up by tapping on the corresponding marker on the map.


About the Project
The AirSafe app is part of the community-facing end of a collaborative project by Rice University. The project hopes to provide useful, high granularity data about the gases in the atmosphere to both researchers and members of the community.

Note that the data in this app focuses on the Houston area.


## Version history (last 5 releases)

### 2.0 — 2019-08-18

- Support for multiple pollutants, including BTEX gases and NO2
- Data from drone missions

### 1.5 — 2017-08-03

-Info button to tell about the app

### 1.4 — 2017-07-31

-More detailed messages, telling when a connection is made and when a connection is lost
-Better connection handling
-New font
-New icon and splash screen
-Minor bug fixes

### 1.3 — 2017-06-18

-Automatically reconnect to the historical database server.
-More meaningful safety level messages
-More pleasant background color

### 1.2 — 2017-06-16

-Notifications in the case of dangerous gas levels
-Display the sensor reading even if the user is far away
-Give hourly labels on the x-axis of the historical charts
-Give descriptions of the selected sensor

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## More apps by Ryan Knightly

- [The Floor Is Lava: For Real](https://appshunter.io/ios/app/the-floor-is-lava/id1027213525)
- [Geomica](https://appshunter.io/ios/app/geomica/id1190783334)
- [Boneless Pizza](https://appshunter.io/ios/app/boneless-pizza/id1252848014)
- [InvestorPrep: Learn To Invest](https://appshunter.io/ios/app/investorprep/id1256815602)
- [FlyAndDrive](https://appshunter.io/ios/app/flyanddrive/id1375820333)

All apps by Ryan Knightly: https://appshunter.io/developer/1022878694

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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 2025-01-09.*