Works where you work
Launch in <45 seconds
A solid product, but don't take our word for it
"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."
Fastest in the market, built for speed and simplicity
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.
Why we stand out
Create variants with our visual editor
✓ No-code visual editor
Install our snippet to access a WYSIWYG editor directly on your site. Works with any website.
✓ Dynamic Keyword Insertion
Personalize your landing pages copy with dynamic keyword insertion. Message match your ads. Zero coding required.
✓ Custom JS and CSS
Add custom JavaScript and CSS for more granular control over your page. Perfect for advanced tweaks and precise adjustments.
✓ Real-time Performance Analysis
Understand conversion patterns with detailed breakdowns by device type, UTM parameters, weekday, and hour of day. Identify what's working and what needs optimization with visual charts and metrics.
✓ AI Conversion Insights
Get AI-powered recommendations to optimize your experiments. Analyze performance patterns across devices, traffic sources, and time periods. Receive actionable insights with confidence scores to guide your CRO decisions.
Get AI-powered Insights
Real time analytics,
Integrates with GA4
✓ Real time data
See your data in real time with a straight forward interface. Understand exactly what's happening with each variant.
✓ Integrates with GA4
Easily integrate your Stellar data with GA4 or other tools such as Segment or Mixpanel.
✓ Easy Goal Setup
Set your conversions in seconds with a simple interface. Choose one based on page visits or specific user actions. No coding needed.
✓ Track multiple conversions
On a per experiment basis, you can track different conversion events to get a more comprehensive view of your results and understand down funnel performance.
Track conversions, effortlessly
Split test your way to market fit and beyond
More comments from our early Beta launch :)
Jake M. — Performance Marketer
Other testing tools have a million features I don't need. Stellar focuses on what actually matters: speed, ease of use, and great analytics.
Richard R. — E-commerce Owner
Stellar is the real deal. No unnecessary features, no steep learning curve. Just quick tests that actually improve our store.
Ben C. — Growth Hacker
It does the job without slowing down our pages. If you're running tests and care about performance, this is the tool to use.
Mike T. — Founder @ DTC Brand
Stellar is refreshingly lightweight and ridiculously easy to use. My team got experiments running without having to call in developers. Game changer!
Lauren K. — Growth Marketer
Setting up my first test took no more than 5 minutes. Easily the best testing tool I've used.
Jason B. — CRO Specialist
We were looking for a Google Optimize alternative. Stellar is so simple yet incredibly powerful. And their usage based pricing makes us save a TON compared to our previous contract with VWO.
Sarah J. — Marketing Lead
Stellar keeps it simple but does everything you need. Fast, lightweight, and no unnecessary complexity. Also, their support team are absolute legends.
David R. — SaaS Product Manager
Switched to Stellar after dealing with slow, clunky testing platforms. The difference is night and day. Setup is fast, the script is tiny, and our site loads just as fast as before. Highly recommend.
Tom G. — Lead Designer
Ran my first test in five minutes and without a developer. Reporting is clear, setup is easy, and it just works.
Emily W. — Conversion Specialist
The perfect alternative to all those bloated testing tools. Their support team actually knows A/B testing and helps when you need it.
Pricing
Free
Up to 25k MTU
Built-in analytics
Visual web editor
Custom CSS & JS editor
AI editor assistant
Basic A/B testing
Up to 3 variants per experiment
Up to 2 experiments running simultaneously
Pro
50k MTU included
Unlimited variants
Unlimited concurrent experiments
Advanced targeting rules
Dynamic keyword insertion
AI insights & recommendations
Priority support
Enterprise
Custom MTU volume
Custom solutions
Integrations support
Unlike competitors who charge in fixed large blocks, we dynamically bill in small increments of 1k MTU, ensuring you never overpay
Compared to average competitors like VWO's $4,700/year for 50k MTU, our equivalent annual cost is just $1,118
We only count users who actually see experiments. Multiple experiment views from the same user count as just 1 MTU