From hypothesis to live experiment in under 5 minutes.
No developers. No tag managers. No deployment pipelines. Open our visual editor directly on your site, make your changes, set traffic allocation, and go live.
No-Code Visual Editor
Install one snippet and access a WYSIWYG editor directly on your site. Change text, images, styles, and layout without touching code.
Dynamic Keyword Insertion
Personalize landing page copy from URL parameters. Message match your ads automatically. Zero coding required.
Custom JavaScript & CSS
Need more control? Add custom JS and CSS for granular adjustments. Perfect for advanced experiments and precise tweaks.
AI Editor Assistant
Let AI help you write headlines, CTAs, and copy variations. Generate ideas and create variants faster than ever.
Know what's working before you check the dashboard.
Stellar's AI analyzes experiment performance across devices, traffic sources, and time periods—then tells you exactly what to do next. Get confidence scores and actionable recommendations to guide your CRO decisions.
Real-time results. Native GA4 integration.
See experiment data the moment visitors land. Break down performance by device type, UTM parameters, day of week, and hour of day. Integrates directly with GA4, Segment, and Mixpanel.
Real-Time Data
See live results with a straightforward interface. Understand exactly what's happening with each variant as traffic flows in.
GA4 & Third-Party Integrations
Send experiment data to Google Analytics, Segment, Mixpanel, or any tracking tool via custom JavaScript hooks.
Easy Goal Setup
Set conversions in seconds. Choose goals based on page visits, clicks, or form submissions. No coding needed.
Multiple Conversion Tracking
Track different conversion events per experiment for a comprehensive view of results and down-funnel performance.
Know which clicks turn into customers.
Stellar doesn’t just track clicks—it shows you which channels, campaigns, and on-page changes actually drive purchases. From the first visit to checkout, see the revenue impact of every experiment in one privacy-first dashboard.
See what gets attention—and what gets ignored.
Heatmaps show exactly where visitors click, how far they scroll, and what they skip. Know which elements drive action and which are costing you conversions.
No more blind spots: track the entire journey.
Map the complete customer journey across pages, forms, and checkouts. Spot exactly where visitors drop off and where revenue is leaking.
The lightest A/B testing script in the market.
At just 5.4KB and served on a CDN, Stellar is 25x smaller than competitors like VWO or AB Tasty. Zero impact on page speed, Core Web Vitals, and SEO.
At just 5.4KB and served on a CDN, Stellar's pure JS script is 25x smaller than competitors like VWO or AB Tasty. With minimal dependencies and a fixed size regardless of test count, it preserves your website's speed, Core Web Vitals, user experience, and SEO performance.
Everything you need, nothing you don't.
Stellar is purpose-built for speed and simplicity. No bloated feature sets, no complexity tax.
Privacy-First
GDPR compliant out of the box. No cookies, no PII collection. Your visitors' data stays safe.
Advanced Targeting
Target by URL rules, device type, and country. Show experiments only to the visitors that matter.
Works Everywhere
Shopify, Webflow, WordPress, Wix, Framer, custom builds—one snippet and you're testing.
Statistical Confidence
Bayesian statistics built in. Know when you have a winner with real confidence—no guesswork.
Loved by CRO marketers and growth teams
“The easiest and best A/B testing tool I've used. Unbelievably easy to set up, seamless editor, and much better user experience than other apps. Everything we needed - GoStellar has.”
“We never found a good replacement for Google Optimize until we found Stellar. Super easy to install and get campaigns running. We're running half a dozen campaigns with plans for plenty more.”
“Extremely easy to use and beginner-friendly. The no-code visual editor means you can create variants without developer input. Customer support is fantastic and genuinely open to feedback.”
“Very easy to setup with a user-friendly interface. The insights are valuable for business decisions. It's mandatory for our CRO agency and we've onboarded many clients with great results. Fast, responsive support.”
“GoStellar is incredibly easy to use, even for non-developers, with a great interface and design. I can set up and run experiments within five minutes, and the self-serve capabilities make it highly valuable.”
“The platform is lightweight and user-friendly, offering a quick view of actionable data and top-notch support. It enables quick A/B testing of landing pages without unnecessary features or consuming team time.”
Built for the people who actually run the tests.
Whether you're an agency managing 20 clients or a solo growth marketer shipping fast, Stellar fits your workflow.
CRO & Digital Agencies
Manage experiments across client sites from one account. Prove ROI with real data. Ship tests without chasing client devs for deployments.
Growth Teams
Move fast without breaking things. Test hypotheses in minutes instead of sprints. The lightest script means zero drag on your site's performance.
CRO Specialists
Statistical confidence, AI-powered recommendations, and the lightest script in the market. The precision you need without the bloat you don't.
Marketing Directors
Show leadership what's working with real experiment data. No developer dependencies, no waiting on engineering sprints. Test and prove results on your timeline.
Seamless adoption and fast results.
“It’s exactly what we were looking for. No fluff, easy setup, and a free way to test before committing. I can’t say enough positive things about the product and we’re using it across every client now and it’s perfect. It’s affordable, intuitive, and it simply does what it says it’s going to do.”
— Charles Wagner, Performance Marketer
Read full postReady to stop guessing and start testing?
Join hundreds of teams running experiments with the fastest A/B testing platform in the market.
Visual editor means zero developer dependency. Launch experiments in minutes.
Works with everything. WordPress, Webflow, Shopify, custom builds—all covered.
AI insights and real-time analytics reveal the truth. Then test a fix in minutes.
Statistical confidence ties every test to real outcomes. No guessing, just data.
Simple tiers for every testing stage.
Start in Sandbox, move to Plus when you need more room, and scale to Pro for full-funnel optimization and team workflows.
Sandbox
Explore the product with strict limits.
- Up to 5k MTU
- 60-day data retention
- 2 variants per experiment
- 1 active experiment
- 2 goals per domain
- 1 domain, no team seats
- — No heatmaps, funnels, or AI insights
Plus
For solo marketers running steady experiments.
- Up to 25k MTU
- 180-day data retention
- 3 variants per experiment
- 2 active experiments
- 5 goals per domain
- Visual editor + analytics
- 3 domains, no team seats
- — No heatmaps, funnels, or AI insights
Pro
Full optimization stack for teams & agencies.
- Unlimited variants & experiments
- Unlimited goals & domains
- Heatmaps & funnels
- AI insights & recommendations
- Advanced targeting rules
- Dynamic keyword insertion
- Team seats & priority support
Enterprise
Custom security, scale, and support.
- Custom MTU volumeTailored high-volume pricing
- Unlimited domains & seats
- SSO & security requirements
- Dedicated account manager
- Priority implementation support
Fixed price with clear limits for solo users.
Move to Pro when you need full-funnel analytics and team workflows.
Pro includes 50k MTU and scales in small 1k increments.