Aranet4 4+

Indoor air quality monitoring

SAF Tehnika AS

Designed for iPad

    • 3.4 • 18 Ratings
    • Free



Aranet4 is an innovative indoor air quality monitor that measures CO₂ level, temperature, relative humidity, and atmospheric pressure. Enjoy many additional features by downloading the Aranet4 app!

Want to access real-time measurements or browse your data history? Maybe set a buzzer or adjust CO₂ thresholds?

Connect your smartphone to the Aranet4 app via Bluetooth and explore:

- Access real-time data and store locally up to 14-day measurement history
- Analyze your measurement history with all-new charts
- Enjoy color-coded graphic visualizations of the CO2 levels
- Set measurement frequency to 1, 2, 5, or 10 minutes
- Adjust CO₂ thresholds and set buzzers
- Change temperature and atmospheric pressure units
- Calibrate CO₂ sensor
- Export stored data
- Update firmware and much more

Languages supported: English, French, Latvian.

What’s New

Version 3.2.0

- All-new charts with improved history loading and data visualization
- Color-coded graphic visualizations of the CO2 levels
- 14-day history in charts

Ratings and Reviews

3.4 out of 5
18 Ratings

18 Ratings

mgf1694 ,

Device is great, app is really slow

5 star for the device, but 3 star for the app.

The huge problem is the app is really slow once it accumulates data. Very nearly unusable for looking at data unless you’re willing to be very patient until the performance stabilizes upon refresh. There are many many other responsive apps with more data, so please contract a dev who can fix this.

Otherwise, the app design is great. Clean, intuitive, and I like the information available.

After buying a crappy co2 meter that broke, I would definitely buy this again, despite the app.

Developer Response ,

Please update the app to the latest 3.0.3 version.

Thank you for your opinion! All criticisms are taken into account in order to improve the app.

lingnik ,

Works great (2022)

As of January, 2022, the app works great. No complaints. Connected quickly via Bluetooth, immediately displayed the most recent readings and battery status. Historical charts are great for experimenting with environmental factors and seeing changes. The aranet4 Home is an expensive sensor, but it does everything it claims to do perfectly.

Tap the line chart icon or any of the displayed values to view historical charts. From the graph, you can export and share the data as a CSV file.

Tap the gear to adjust a sensor’s settings: frequency of readings (1, 2, 5, or 10 minutes), enable the buzzer, increase the bluetooth range, enable/disable smart home integration, update the firmware, customize the good/average/unhealthy ranges, turn on calibration mode (warning: the aranet4 is well-calibrated out of the box, and once you manually calibrate it there’s no way to go back to the factory calibration), and give the sensor a name.

The app’s settings (hamburger menu) let you adjust the language (English/Latvian), units of measurement for temp and pressure, enable a fullscreen mode, and enable a mode to keep the screen on.

Developer Response ,

Thank you for the positive feedback!

ben-the-breather ,

Nice interface, just needs a way to add notes!

The app is a nice interface to the Aranet monitor, and makes it way easier to change settings (like temp units) versus the ultra-mini hardware switches. The graphs are a nice feature, particularly if you leave the monitor in one location. It would be next level if you could tag timepoints on the graphs with sticky notes, with say, a press and hold to add note, and a tap to open. Also, good on the Devs for not collecting data!!

Developer Response ,

Thank you for a positive feedback! Your idea about sticky notes is added to the list of requested functionality.

App Privacy

The developer, SAF Tehnika AS, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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