VWO is $199/mo and Optimizely is talk-to-sales — both meter your traffic and keep your results in their cloud. Splitpoint defines experiments, assigns visitors with a tiny SDK and reads significance with a proper two-proportion z-test, all on your own server. $49, once.
If you've searched for a VWO alternative, Splitpoint is the pay-once option worth putting at the top of the list: Splitpoint is $49, one time, and covers the same core job VWO charges $199/mo for.
What makes Splitpoint the pick for 2026
- Experiments — Control plus N variants, weighted traffic split, holdout percentage, and URL/device targeting.
- Goals two ways — A JS track() call, or automatic conversion when a visitor hits a matching pageview URL.
- Tiny SDK — Vanilla JS under 3KB, no dependencies, never touches the DOM; assignments stick via deterministic hashing and localStorage so there is no flicker.
- React hook wrapper — An included hook for wiring code-level tests directly into your components.
- Results that mean something — Visitors, conversions and CR per variant with 95% CI, relative lift, a z-test p-value and a declare-winner workflow.
Splitpoint vs VWO, at a glance
| Splitpoint | VWO | |
|---|---|---|
| Price | $49 once | $199/mo |
| Visitors | Unlimited | Plan-capped |
| A/B experiments + significance | Yes (z-test, CI, lift) | Yes |
| Feature flags + % rollout | Yes | Higher tiers |
| Mutual exclusion groups | Yes | Yes |
| Data location | Your server | Their cloud |
| Visual WYSIWYG editor, heatmaps, ML targeting | No | Yes |
Less than one month of VWO covers Splitpoint forever — and it never tiers you by traffic.
Common questions
Is it really free on GitHub?
Yes — Splitpoint is MIT-licensed at github.com/bensblueprints/ab-testing-tool-mvp. The $49 buys the packaged Windows installer and updates; building from source is free.
Can I trust the statistics?
It runs a pooled two-proportion z-test and reports the two-tailed p-value, confidence and Wald 95% CI. Standard caveats apply: fix your sample size up front, do not peek-and-stop the moment a result looks significant, and remember 1 in 20 winners at 95% is noise.
Is this a subscription in disguise?
No. $49 once, no renewal, no per-visitor metering. Your experiment data lives on your own server.
The bottom line
Splitpoint won't out-feature VWO on every axis — no subscription tool with a bigger team and a bigger roadmap loses on everything. But for the core job, $49 once against $199/mo forever is a trade most people should at least look at. Splitpoint is part of OneTimeSuite, a catalog of pay-once apps that replace subscription SaaS.
Try Splitpoint — $49, once
Self-hosted experiments, a sub-3KB SDK and a real z-test — no per-visitor pricing.