Stop Losing Insights—Find Any Past Test in Seconds
No more digging through scattered documents—find any test in seconds with instant search.
Clear outcomes and learnings for every test—understand your wins and losses at a glance.
Get alerts when you're about to duplicate a past experiment. Build on what you've learned.
When team members leave, your testing insights stay. No more starting from scratch.
Sound Familiar?
Test Results Are Everywhere
Some tests are in JIRA. Others in Confluence. The really old ones? Maybe a shared Google Drive folder nobody remembers.
Knowledge Walks Out the Door
When a team member leaves, months of hard-won testing insights disappear with them. You're left starting from scratch.
You Keep Re-Running the Same Tests
"Did we test this before?" becomes the most common question. Without a searchable Test Library, you waste cycles on repeat experiments.
No Way to Learn From Patterns
You've run 100+ tests, but you can't easily see which types of changes actually move the needle. Every test feels like starting over.
One Centralized Test Library for Your Entire Team
GrowthLayer gives you a single source of truth for every A/B test your organization runs—past, present, and future.
Structured Storage
Every test captured with hypothesis, variants, results, and learnings in a consistent format.
AI-Powered Organization
Auto-tagging, smart categorization, and semantic search that understands what you're looking for.
Team Knowledge Base
Institutional memory that stays with your organization, not individual team members.
What You Can Do With GrowthLayer's Test Library
How Teams Use the Test Library
Build on Past Wins
Before launching a new test, quickly check if similar experiments have been run. Build on what worked instead of starting from scratch.
Onboard in Days, Not Months
New hires can browse your entire testing history to understand what's been tried, what works, and where opportunities exist.
Prove Program Value
Pull up aggregate results, win rates, and revenue impact in seconds—not hours of manual spreadsheet work.
Every test, searchable in seconds
Log results in 60 seconds. AI auto-tags by feature, hypothesis type, and outcome. Search your entire test history instantly instead of digging through spreadsheets.
Works Even Better With
The Test Library is the foundation. These features help you get even more value from your testing data.
Test Insights & Pattern Detection
Automatically surface winning patterns across your test history. See which types of changes consistently move the needle.
Learn moreTest Import & Integrations
Import your existing tests with AI-powered Quick Import or sync directly with Optimizely and VWO. Get started in minutes, not weeks.
Learn moreFrequently Asked Questions
What is an A/B Test Library?
An A/B Test Library is a centralized system for storing, organizing, and searching all your experimentation data. Instead of scattering test results across JIRA, Notion, and spreadsheets, a Test Library keeps everything in one searchable location—so your team can learn from past experiments and build institutional knowledge.
How do I organize my A/B test results?
GrowthLayer automatically organizes tests by category, page type, metric, and outcome. Our AI-powered tagging suggests relevant tags based on your hypothesis, and semantic search lets you find tests using natural language queries. You can also create custom views by brand, site section, or any dimension that matters to your team.
Why do CRO teams need a centralized Test Library?
Without a centralized Test Library, teams waste time re-running experiments, lose knowledge when people leave, and can't identify patterns across their testing history. A proper Test Library preserves institutional knowledge, prevents duplicate tests, and helps teams compound their learnings over time—leading to higher win rates and faster iteration.
Does GrowthLayer replace my testing tool?
No. GrowthLayer is a Test Library and analysis system that works alongside your existing testing platform (Optimizely, VWO, Google Optimize, etc.). You continue running experiments in your current tool—GrowthLayer stores, organizes, and analyzes the results so you can learn from them over time.