Tests that run themselves.
Wins you actually understand.
You run the store. Spar runs the experiments. Every Friday, you get a plain-English recap of what worked, what flopped, and the one button to ship the winner.
Shopify install takes 2 minutes. You approve every variant before it goes live.
You shouldn't have to learn CRO to grow your store.
Founders running a store on their own (or with one other person) live with three problems. Spar was built to take all three off the table.
I don't know what to test.
Every growth blog has a different list of 47 things you should be doing. None of them looked at your store. You read three of them, get more confused, and close the tab.
I can't afford a growth hire.
Agencies want $6k a month. A full-time growth lead is $120k plus equity. Neither one of those is a number you can write next to ad spend right now.
I don't have a Friday afternoon for this.
It's already 11pm. Customer support is unread. Ads need attention. The idea that you'll also sit down and write a test plan is a joke you keep telling yourself.
You won't log in to a dashboard. You'll just read a message.
Every Friday morning, Spar tells you what it tried, what worked, and what to do next. You tap the green button. The win goes live.
Sticky add-to-cart on PDPs
Checkout sessions up 6% vs control. Stat sig at 1,420 sessions.
Free-shipping bar at the top
Basically a coin flip. Stopped it on its own.
3 product pages bouncing on mobile
Users leaving within 2 seconds. Want me to dig in?
Delivered 9:14 AM
A message, not a meeting.
No spreadsheets to open, no jargon to decode, no dashboard to learn. Spar talks to you the way a smart partner would: short, specific, and honest about what didn't work.
The numbers next to the words.
When Spar says a test won, it shows you the proof in one tap. When it says a test flopped, it stops the variant on its own. You don't have to remember to check.
Decisions in three taps.
Ship the winner, see the proof, or look at the next thing Spar found. You decide what goes live. Nothing changes on your store without you.
Illustrative. Product names and numbers are examples of what a typical week looks like, not data from a real customer.
What Spar actually does for you.
Four things, each one tied to a worry you're already carrying. If a capability doesn't kill a worry, it isn't here.
Spar picks what to test.
It audits your store the same way a senior CRO would, scores every gap against a library of patterns that work in ecommerce, and lines up the highest-impact ideas first.
Mockups and code, both in the box.
Every test idea comes with a visual mockup and the actual JS to run it. Nothing waits on a designer. Nothing waits on a Shopify dev. You don't have either, and that's fine.
Results in plain English.
No p-values, no statistical jargon, no chart that needs a course to read. When Spar says a test won, that's because the math actually says it won. We did the reading for you.
One tap and it ships.
When you say go, the winning variant is live on your store within seconds. No code copy-paste, no theme edits, no Friday lost to deployment.
"Is AI going to break my store?" No.
The real worry founders have about AI tools. We took it seriously. Here are the four guardrails that mean your store keeps working even when Spar is doing its job.
Nothing ships without you.
Spar can pick what to test and build the variant, but only you can publish it. Every change is gated behind a button you press. No autopilot, no surprise.
Variants are scoped, not rewrites.
Tests run as scoped JavaScript on the pages they target. Your theme files stay untouched. If a variant is off, your store renders exactly the way it does today.
One screen, every rollback.
If something looks off after a ship, you can flip a test off in a single click. The original page is back instantly. No support ticket, no waiting on a deploy.
Spar stops bad tests on its own.
If a variant is hurting checkout, Spar pulls the plug before it costs you orders. It's looking at the numbers every hour, even when you aren't.