Alright, let's get started by creating a new collection in Adalo called "Users." You'll need these fields:

• Name
• Email
• Referral Code (Text)
• Referred By (Relationship to Users)
• Referral Count (Number)

Next, make sure the "Referral Code" field in the "Users" collection can accept unique values. You can use a random string generator or a script to create these unique referral codes for new users. It's like giving each user their own secret handshake!

Now, let's create a signup screen. Here, users can input their name, email, and referral code. Add a text input element for the referral code and link it to the "Referral Code" field in the "Users" collection. Easy peasy, right?

Time to validate that referral code during signup:

• Query the "Users" collection to see if the referral code exists.
• If it does, link the new user record to the existing user via the "Referred By" relationship field.
• Don't forget to increment the 'Referral Count' of the referring user by 1. They deserve some credit!

On the user profile screen, show the logged-in user's unique referral code. Use a text element to display the "Referral Code" field from the "Users" collection. It's like showing off a badge of honor!

Generate a custom link that includes the referral code. For example, https://yourappname.adalo.com/signup?referral=<Referral Code>.
Let users share this link through SMS, email, or social media using sharing components. Sharing is caring, after all!

Modify the signup screen to read the referral code from the URL parameters:

• Add a screen action to check if there's a 'referral' parameter in the URL.
• Automatically fill the referral code text input with this value if it exists. It's like magic, but it's no-code!

Create a relationship field in the "Users" collection called "Referred Users" (many-to-one relationship with the "Users" collection).
This will help in tracking which users were referred by whom and can be used to display the referral count or show the list of referred users on the profile page. It's like having your own little network!

Optionally, add a rewards system by creating new fields to track rewards for both the referrer and the referee:

• Add reward points to the referring user when their referral signs up.
• Optionally add rewards to the referee (new user) who signs up using a referral code.

Use this information to display rewards or enable certain features inside your app based on user referrals. Everyone loves a good reward, right?