A/B Testing
Test what works. No cookies needed.
GhostlyX A/B testing lets you run split tests on any page without cookies, fingerprinting, or personal data collection. Deterministic visitor assignment, Bayesian statistics, and real-time results in a single lightweight script.
Experiment data
| Metric | Value |
|---|---|
| Total visitors | 9.6k |
| Total conversions | 576 |
| Probability B beats A | 97.2% |
| Control | Winner |
Visitors and Conversions
| Variant | Visitors | Conversions | Rate |
|---|---|---|---|
| Blue button (original) | 4.8k | 241 | 5.0% |
| Green button | 4.8k | 335 | 7.0% |
Statistical significance reached. The winning variant can be deployed with confidence.
Switch between experiments to explore variant performance and Bayesian probability. All data is simulated.
Make data-driven decisions without compromising privacy
Most A/B testing tools rely on cookies and third-party scripts to track individual visitors across sessions. GhostlyX takes a fundamentally different approach. Variant assignment is deterministic, based on an anonymous visitor hash and experiment ID.
Key Features
- Deterministic variant assignment: Visitors are assigned to variants using a stable hash function.
- Bayesian probability engine: Results use Monte Carlo simulation with 10,000 samples.
- Automatic conversion attribution: Conversions are attributed to the correct variant automatically.
- Multiple variants per experiment: Run tests with up to 4 variants on Business plans.
- Pageview and event goals: Track conversions based on specific URL paths or custom events.
- Real-time results dashboard: Watch visitor counts, conversion rates, and probability scores update in real time.
Privacy at every layer
- No cookies or local storage: Variant assignment is computed from a deterministic hash on every page load.
- No visitor identifiers: Experiment data is stored with anonymous visitor hashes only.
- GPC and DNT respected: Visitors with Global Privacy Control or Do Not Track enabled are excluded from all experiments.
- Opt-out page available: Visitors can exclude themselves from GhostlyX tracking.
- Aggregated statistics only: Individual visitor behaviour is never exposed.
- Lightweight on-demand loading: The experiment script loads only when experiments are active for the current page.
Set up an A/B test in four steps
- Enable experiments on your tracking script by adding
data-experiments="true". - Create an experiment in the dashboard, defining the page and adding variants.
- Set a conversion goal based on pageviews or events.
- Monitor results and deploy the winning variant once confident.
A/B testing plan limits
- Business: $29/mo, 10 active experiments, up to 4 variants per experiment.
- Scale: $69/mo, unlimited experiments and variants.
Frequently asked questions
What is GhostlyX A/B testing?
GhostlyX allows you to run split tests on your website without cookies or personal data.
Does GhostlyX A/B testing use cookies?
No, it uses a deterministic hashing algorithm based on anonymous visitor identifiers.
How does variant assignment work without cookies?
It uses a deterministic hash function to map visitors to variants based on stable inputs.
What statistical method does GhostlyX use?
GhostlyX employs Bayesian statistics with Monte Carlo simulation for clearer results.
What types of goals can A/B tests track?
Pageview goals and event goals for conversion tracking are available.
Which plans include A/B testing?
Available on Business and Scale plans only.