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About

ABTestly is an A/B testing platform for teams that ship experiments in code rather than through a visual editor. You write each variation as real JavaScript and CSS. Experiments 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 rather than one inferred number, so results stay auditable. Confidence intervals are shown with the sample size, no winner is declared before significance, and sample ratio mismatch is detected and flagged. Three statistics engines: frequentist on every plan, sequential and Bayesian from Pro upwards. Also a speed guardrail comparing p75 LCP against control. Pricing is published: $99 a month at 50,000 tracked users, $249 at 200,000, $549 at 500,000, with a 14-day trial on monthly plans.

About

Spar is an AI conversion rate optimization (CRO) and A/B testing platform for Shopify, broader ecommerce, and SaaS teams. It profiles any storefront, grounds recommendations in your funnel data, behavior signals, reviews, public opinion, and brand context, then turns specific friction points into prioritized, test-ready A/B variations, each citing the evidence it came from. Spar runs and measures its own tests using sequential statistics, flagging a winner once a variation reaches 95% probability of being best. Variants are scoped JavaScript, so your theme and app code stay untouched. It works alongside other experiment and task management platforms. Nothing ships without your approval.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software engineering and CRO teams at ecommerce and SaaS companies who write their own test variations in code, and agencies running experiments for client sites.

Audience

Ecommerce brands, merchants, and agencies

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

No images available

Screenshots and Videos

No images available

Pricing

$99/month
Free Version Not Supported
Free Trial Supported

Pricing

$100/month
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

ABTestly
Founded: 2025
abtestly.com

Company Information

Spar
Founded: 2025
Canada
spar.so

Alternatives

No Alternatives

Alternatives

Categories

AB Testing Supported

Categories

Integrations

Shopify Not Supported

Integrations

Shopify Supported
Claim ABTestly and update features and information
Claim ABTestly and update features and information
Claim Spar and update features and information
Claim Spar and update features and information