Mida is the lightweight A/B testing tool built for speed and simplicity. See how it ranks in our best A/B testing tools comparison.


VWO is a broad experimentation suite with web testing, personalization, and feature experimentation. Mida focuses on fast website A/B testing, personalization, and campaign experiments for teams that care about speed, simplicity, and predictable pricing.
Mida keeps the core workflow simple: create a hypothesis, generate or edit a variant, target the right audience, and measure the outcome.
Mida uses a 15KB compressed script, making performance a core product promise rather than an afterthought.
Start free up to 100,000 monthly tested users, then move to transparent paid plans from $399/month or $299/month when billed annually.
VWO is useful when a company needs a large enterprise experimentation stack. Mida is strongest when the team wants fast, focused website experimentation.
No. Mida is intentionally focused on lightweight website experimentation and personalization for marketing teams.
Yes. Mida supports A/B tests, split URL redirect tests, SPA testing, personalization, and feature-flag-style rollouts for website experiences.
A/B testing scripts execute on high-value pages. A lighter script helps protect load speed, Core Web Vitals, and conversion rate.
We don't force you to a higher plan for a few more A/B testing features

Plan Name
Growth
Growth
Number of Tested Users
100,000+
Paid tiers only
Former free tier: 50K MTU — discontinued
Pricing
$399/month
or $299/mo billed annually
$646/m
billed annually
Charging Model
Usage based
Tiered based
Web Experimentation (A/B Test)
✅
✅
Unlimited Variations
✅
✅
OS/User/Traffic Targeting
✅
✅
Download/Share Summary Report
✅
✅
Campaign Data Retention
Unlimited
Unlimited
Cross-domain Testing and Tracking
✅
❌
Campaign Scheduling
✅
❌
Personalize Text
✅
❌
Behavioral Targeting
✅
❌
Multivariate Testing
✅
❌
Personalization for Web
✅
❌
Deploy Rollouts for Web
✅
❌
Feature Flags
✅
❌
Perfect for marketers who don’t want to rely on developers and prefer to deploy changes themselves. Start testing and optimizing without waiting on Alex, the frontend developer. We don't like him either.
Click, edit, and publish new variants
Drag elements and reposition them around
Supports custom Javascript and CSS editors


Mida's script is at least 10 times smaller than most other A/B testing platforms. It loads instantly without affecting your site performance and SEO ranking.
Script size is ridiculously small
You won't feel a thing when it works its magic
Loads instantly (almost... 20ms) on any site
Tested users are individuals who visit your website and are included in any of the A/B tests you're conducting. See our visual guide to Monthly Tested Users (MTU).
Mida counts an MTU when a unique visitor interacts with at least one active experiment within a billing month. Each user is counted only once per month, regardless of how many experiments they participate in or how many pages they view. Learn how Mida counts Monthly Tested Users (MTU).
A project is one workspace with its own tracking snippet, usually one per website. It has nothing to do with how many tests you run: on Growth your experiments, variants and goals are all unlimited, inside every project.
Most brands only ever need one project. Some use two, for example one for the marketing site and one for the app, when they want each site reported on its own instead of visitors being tracked across both. The limit is only there to stop an agency from buying a single plan and loading in dozens of unrelated client accounts. Sandbox includes 2 projects, Growth includes 5, and Enterprise is unlimited. If you manage multiple client sites, ask us about the Agency plan.
Mida is designed to have minimal impact on your site speed. Our script is 15KB compressed and typically much smaller and faster than most competitors, keeping your website's performance smooth. You can see a detailed comparison of script and loading times A/B testing tool speed and script size benchmark.
Yes. Mida provides native iOS (Swift) and Android (Kotlin) SDKs for server-side A/B testing and feature flags, plus a Flutter SDK for cross-platform apps. See the SDK catalog for installation details.
Mida works with almost all websites that allow the addition of custom HTML codes.
Yes, it works on all website funnels that allow you to inject custom HTML codes to the HEAD section.
Yes, Mida supports cross-domain testing! You can use the same project snippet across different websites or domains. Add the unique project snippet to each site you want to test or track goals within the same project.
No, it's all covered within the Growth plan. Our pricing plan doesn't charge you separately on features, it's purely a usage-based pricing model with all features covered.
Yes. Mida supports flexible agency setups, depending on how you work with your clients and handle billing. Agency portal and multi-client account options in Mida.
Mida is 10X faster than anything you have ever considered. Try it yourself.
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