> For the complete documentation index, see [llms.txt](https://guides.fieldedgeapp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.fieldedgeapp.com/product-tour-or-mobile-app/people/custom-fields.md).

# Custom Fields

FieldEdge displays custom fields from your NationBuilder database on contact profiles. This lets your field team access and update campaign-specific data directly from the mobile app.

## Viewing Custom Fields

Custom fields appear on the **Personal** tab of a contact's [profile](/product-tour-or-mobile-app/people/profile.md). They are displayed below the standard contact information fields.

## Editing Custom Fields

To edit a custom field:

1. Open the contact's profile
2. Tap the **Edit** icon
3. Scroll to the custom fields section
4. Update the field value
5. Save your changes

Changes to custom fields sync back to NationBuilder in real time.

{% hint style="info" %}
Custom fields are defined in NationBuilder. FieldEdge displays and allows editing of custom fields that have been configured for your nation. To add or modify custom field definitions, use the NationBuilder control panel.
{% endhint %}

## Field Types

FieldEdge supports the following NationBuilder custom field types:

* **Text** — free-form text input
* **Number** — numeric values
* **Checkbox** — true/false toggle
* **Dropdown** — select from predefined options
* **Date** — date picker

{% content-ref url="/pages/mNbeVNiu4CLJtjCmdTt1" %}
[Contact Profile](/product-tour-or-mobile-app/people/profile.md)
{% endcontent-ref %}

{% hint style="info" %}
Which edit and profile fields are visible to users is configured in [App Customization](/product-tour-or-hq/app-customization.md).
{% endhint %}