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ABTestly
Code-first A/B testing with statistics you can audit
ABTestly is A/B testing for teams that write their variations in code rather than in a visual editor. Variations are real JavaScript and CSS. They live in your repository and go through the same review as any other change. The runtime is about 31 KB gzipped and the page is held until the variation is applied, so visitors do not see the control flash first. Assignment, exposure and conversion are recorded as three separate events on an exact ledger, so results stay auditable.
Hello Product Hunt.
We built ABTestly because every testing tool we tried put a visual editor between the engineer and the page. That is fine for swapping a headline. It falls apart on a headless build, on a single page app, or anywhere the team has already refused to add a third party script that rewrites the DOM after it loads.
ABTestly works the other way round. You write each variation as real JavaScript and CSS. It lives in your repository and goes through the same review as any other change. The runtime is about 31 KB gzipped, and the page is held until the variation is applied, so visitors do not see the control flash first.
The part we care most about is the measurement. Assignment, exposure and conversion are recorded as three separate events on an exact ledger rather than one inferred number, so you can audit where a result came from. Confidence intervals are always shown with the sample size, no winner is declared before significance, and sample ratio mismatch is detected and flagged. Frequentist statistics are on every plan; sequential and Bayesian start at Pro.
Pricing is published rather than quoted: $99 a month at 50,000 tracked users, $249 at 200,000 and $549 at 500,000. There is a 14 day trial on monthly plans and there is no free tier, so you will need a card to start.
We are small and this is early. If you try it and something does not work, say so here and we will answer.
The ABTestly team
No comment highlights available yet. Please check back later!
About ABTestly on Product Hunt
“Code-first A/B testing with statistics you can audit”
ABTestly was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #50 on the daily leaderboard. ABTestly is A/B testing for teams that write their variations in code rather than in a visual editor. Variations are real JavaScript and CSS. They live in your repository and go through the same review as any other change. The runtime is about 31 KB gzipped and the page is held until the variation is applied, so visitors do not see the control flash first. Assignment, exposure and conversion are recorded as three separate events on an exact ledger, so results stay auditable.
ABTestly was featured in A/B Testing (20.4k followers), Marketing (469k followers) and Developer Tools (520.4k followers) on Product Hunt. Together, these topics include over 169.7k products, making this a competitive space to launch in.
Who hunted ABTestly?
ABTestly was hunted by Arafat Islam. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how ABTestly stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Arafat Islam