---
title: "How questions: get the rule explained in plain language · Adea"
description: "\"How is … calculated\" and \"how does … work\": the rules in your code, explained so everyone understands them."
url: https://adea.app/questions/how
---

# How questions: the rules, explained.

"How is the subscription discount calculated?" can only be answered by reading the code. Adea reads it for you and draws the rule, so sales, support and management can follow along and developers can approve the explanation.

[Ask your first question](https://adea.app/signup) [See the demo](https://adea.app/demo)

## Questions like these

How is the subscription discount calculated?

Item in subscription delivery → not on sale → 10% of the item price → discount. €40 × 10% = €4.00.

How does a customer get marked inactive?

After 180 days without a purchase a nightly job sets inactive_at. The customer becomes active again on the next purchase.

When does an order get free shipping?

When the items cost at least €80. Until 9 days ago the limit was €65.

## What you get

### From code to plain language

Adea reads your code and writes the rule so everyone can follow.

### Drawn out

Rules are shown as a sequence of steps with examples, not a wall of text.

### Approved by developers

A developer can approve the explanation, so it is used in every future answer.

## Common questions

### What if the rule is spread across several files?

Adea follows the calls between files and shows where each part comes from.

## The other kinds

[What](https://adea.app/questions/what) [Why](https://adea.app/questions/why)

## What do you want to know?

[Start free](https://adea.app/signup) [Book 20 minutes](mailto:hello@adea.app?subject=20%20minutes%20about%20Adea)