> For the complete documentation index, see [llms.txt](https://docs.efento.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.efento.io/efento-ble-loggers/using-loggers/standalone-mode/mobile-app-settings.md).
# Mobile app settings
To configure the application settings, tap the menu in the upper-left corner of the app and open **Configuration**.
The following options are available:
* **Activation Energy** – A constant used when calculating the Mean Kinetic Temperature (MKT). The default value is **83.14472 kJ/mol**.
* **Default Encryption Keys** – These keys are used to automatically decrypt logger communications that are encrypted with the same key. For example, if the key *“qwerty123”* is added as a default, any logger using this key will be decrypted automatically. You can add up to **five default encryption keys**.
* **To add a key:** Tap **Add encryption key**, enter the new key and its description, and save the settings.
* **To remove a key:** Tap and hold the key you want to delete.
* **Location in PDF Reports** – When enabled, the address of the location where the report was generated will be added to the footer of PDF reports. The location is determined using GPS via Google Maps.
* **Forget Logger** – Removes the encryption keys and reset codes of the selected logger(s) from the application.
* **Downloading Measurements** – By default, the app downloads the full logger memory, which may take time. Using this setting, you can choose to download only the most recent data (e.g., last 24 hours or last 7 days) to speed up the process.
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