Split Test Pro vs Stellar
Looking for a Stellar alternative? Split Test Pro runs server-side tests and feature flags, is a Shopify app that tests themes and templates, and reads your results with AI — with plans from $79/month, billed only on traffic that's actually in a test.
Compare the details.
The features that shape your testing program.
Where you can test
| Feature | Stellar | |
|---|---|---|
| Shopify App Store app | Yes | No |
| Any website (one script tag) | Yes | Yes |
| Server-side testingIncluded on every paid plan | Yes | Partial |
| Feature flags and rollouts | Yes | Not listed |
What you can test
| Feature | Stellar | |
|---|---|---|
| Shopify theme and template tests | Yes | No |
| CSS and JavaScript variants | Yes | Yes |
| Split URL / redirect tests | Yes | Not listed |
| Audience targeting | Yes | Yes |
| Custom traffic split | Yes | Yes |
| Flicker-free variants | Yes | Yes |
| Scheduled start and end | Yes | Not listed |
Stats and results
| Feature | Stellar | |
|---|---|---|
| Statistical method | Bayesian | Bayesian |
| Custom goals and events | Yes | Yes |
| False-winner guardrails | Yes | Not listed |
| Segment breakdowns | Yes | Yes |
AI
| Feature | Stellar | |
|---|---|---|
| AI test ideas | Yes | Yes |
| AI-generated variants | Yes | Yes |
| AI results analysis | Yes | Partial |
Pay for traffic
that actually tests.
Split Test Pro plans start at $79/month and bill by tested sessions — visitors who actually enter a test. Stellar plans start at $29/mo (annual) and bill by monthly tracked users.
Split Test Pro$79/mo
- Billed by tested sessions only
- Monthly billing · 14-day free trial
- No lock-in · cancel anytime
- Included
- Partly included
- Not available
- Not listedWe couldn't confirm it
Stellar information is based on publicly available sources reviewed in October 2026 and may have changed since. “Not listed” means we couldn't confirm the feature. Stellar is a trademark of its respective owner; Split Test Pro is not affiliated with Stellar.
Why teams choose Split Test Pro
Test beyond the page
Server-side tests and feature flags come with every paid plan: roll features out gradually, kill them instantly, and A/B test them with the same Bayesian results.
Made for Shopify, too
Install from the Shopify App Store and test themes and templates, with purchases, add to carts and revenue tracked automatically.
AI from idea to answer
Splitty builds tests on your live page, and AI analysis reads the results and tells you what they mean — so you know what to do next.
Pay for tested traffic only
Plans bill by tested sessions — visitors who actually enter a test. Traffic that never sees an experiment doesn't count.
Questions
Is Split Test Pro a good Stellar alternative?
If you want a tool that runs server-side tests and feature flags, is a Shopify app that tests themes and templates, and reads your results with AI, yes. Split Test Pro plans start at $79/month, bill only on tested sessions, and come with a 14-day free trial so you can compare for yourself.How do I switch from Stellar to Split Test Pro?
Install Split Test Pro from the Shopify App Store or add one script tag to any site, then recreate your tests — or let Splitty build them from a one-line description. Switch over as your current tests finish.What does “tested sessions” billing mean?
A tested session is a visitor who entered at least one running experiment that month, counted once however many pages they view. Visitors who never reach a test don't count toward your plan.Do I need a developer?
No. Splitty, the AI test builder, writes the variants for you on your live page. Developers can still write their own CSS and JavaScript variants, or use server-side flags.Where does the Stellar information come from?
From Stellar's publicly available information, reviewed in October 2026. Where we couldn't confirm a feature we say “Not listed” rather than “No”. Features change — check with Stellar for their current offering.
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