Archived App
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This utility measures ambient temperature and humidity using a physical device that connects to your iPhone or iPad's audio jack. It provides real-time readings, comfort information, and calculates dew point and heat index without needing a battery.
What's New in J
1.6
November 23, 2016
This app has been updated by Apple to display the Apple Watch app icon.
Developer apps
FAQ
How do I use J-TH?
Open the J-TH app, firmly plug the J-TH device into your iPhone/iPad's audio jack, and turn the headphone volume to maximum. Readings should appear within seconds. Remember to unplug the device when finished.
Does J-TH require a battery?
No, J-TH does not require a battery. It draws power directly from your iPhone or iPad through the audio jack connection.
What is the temperature and humidity range for J-TH?
J-TH can measure temperatures from -30 to 70 degrees Celsius (-22 to 158 degrees Fahrenheit) and humidity levels from 0% to 100%.
What should I do if J-TH is not detecting the device?
Ensure the headphone volume is at maximum. If the issue persists, check your iPhone/iPad's privacy settings to ensure microphone access is enabled for the J-TH app. Also, verify that 'Volume Limit' is turned off in your device's settings.
Will J-TH work on iPhones/iPads purchased in the EU?
For devices purchased in the EU, the EU volume limit may affect performance. If you encounter issues, try turning off the 'EU Volume Limit' in your iPhone/iPad's settings and attempt to use J-TH again.
What information does J-TH provide besides temperature and humidity?
In addition to real-time temperature and humidity, J-TH offers Comfort Information for reference and calculates the Dew Point and Heat Index.
What devices is J-TH compatible with?
J-TH is designed to work with iPhones and iPods. It connects via the audio jack.
How often is J-TH updated?
The last update for J-TH was on November 23, 2016, with version 1.6. There have been no updates since then.
