# Not sure what to test?

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This document shares a variety of information to help Hackle users benchmark experiment topics, metrics, and numbers, and run experiments that fit their service.

Browse the sites below and prepare effective experiments.
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### Hackle Customer Case Studies

Check out case studies from various customers who are improving their products through Hackle A/B Tests.

* [An experiment guide for A/B test beginners to design immediately](https://blog.hackle.io/post/ab-guide-for-newbies?utm_source=%08guide)
* [How Team Sparta, the power players, grow fast with data](https://blog.hackle.io/post/teamsparta-interview?utm_source=guide) by Team Sparta
* [Getting started with A/B testing for game companies](https://blog.hackle.io/post/abtest-for-gameindustry?utm_source=operation_guide) by Gamedueo
* [The secret to how Korea's #1 freelance marketplace Kmong grows as fast as a startup!](https://blog.hackle.io/post/kmong-client-interview?utm_source=guide) by Kmong

### Free Sites

#### [AB Test Cases](https://www.abtestcases.com/cases-ecommerce/)

* You can find **A/B Test topics** and **success metrics with numbers** from real experiments.
* Browse experiment topics across **various industries** (e-commerce, advertising, travel, SaaS, etc.) such as landing pages, sign-ups, and pricing pages, and **come up with topics worth trying.**

### Paid Sites

#### [GoodUI](https://goodui.org/tests/)

* Benchmark experiment topics, detailed content, and numbers by funnel stage (Engagement, Retention) and UI type (Layout, Button).

#### [GuessTheTest](https://guessthetest.com/archived-tests/)

* Find experiments by metric (AOV, Conversion Rate) and UI (Button, CTA, etc.), and discover insights that can help your service grow.

Before starting an A/B Test, write a one-pager document to plan and prepare more thoroughly.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hackle.io/en/ab-test/about/ab-test-topic.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.