Features

Hidden fields for custom signup forms

Automatically populate HTML hidden inputs in your signup and login forms. Collect users data from cookies, UTMs, and URL parameters without effort.

Hidden fields for custom signup forms
Cascade
Tinybird
Privalia
Hubuc
Hopin
Mutua Madrileña

How it works

Hidden fields features


Set hidden fields via URL params

Fill hidden fields with data from a URL and add any parameter you'd like to track. Pass hidden fields both with UTMs and your own URL parameters to track the user's itinerary, campaign details, etc. and any information you'd like to see in your submissions.

JavaScript method to set values

Use our JavaScript SDK method to set hidden field values programmatically. This will give you the flexibility to set values, at any moment, in the form lifecycle: when the user continues to the next step, when information is available in your site, etc.

Get started with a template

Import a template with just a few clicks and adapt it to your needs

Basics

Contact form

A contact form with basic details to allow users to reach you out.

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Signup

Signup form with Firebase

A custom signup form with Firebase that collects basic information to create an account.

Firebase
Signup

Signup form with email OTP verification with custom API

Verify your users' email address sending them a one-time-password (OTP) and sign them up with a custom API.

OTP
HTTP Request
Data verification

Phone OTP verification with Twilio

Verify your users' phone number sending them a one-time-password (OTP) with Twilio.

Twilio
Signup

Signup form with phone OTP verification with custom API

Verify your users' phone number sending them a one-time-password (OTP) and sign them up with a custom API.

HTTP Request
OTP
Automation

Demo request form with Calendly

Require your users to provide information before allowing them to schedule a slot with Calendly widget.

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See all the templates

Other popular features

Discover what use cases you can build with Arengu

Security and privacy by default

We help you comply with your security and privacy policies. You decide where you want to store the information you collect, and who has access to it.

SOC 2 certified

Monitored by a 3rd party to stay compliant with SOC 2 security standards.

GDPR compliant

Full control of your data to help you comply with your privacy policies.

Hosted in the EU

Servers and data are securely hosted in the European Union.

Encrypted data

Data is stored encrypted using the AES256 algorithm.

Learn more about security

Out of the box integrations

Send your data back and forth between Arengu and your favourite apps.

Getting started with Arengu

Arengu allows you to build all your user flows connected to your current stack, and avoids coding all the UI, complex integrations, validations or logic from scratch. Try it for free and start building faster and scaling your application needs as they grow.