# What do companies test on mobile vs web, and where does each platform concentrate experiments?

Source: Lazyweb Research
Author: Ali Abouelatta, Lazyweb Research
Published: 2026-07-07
Updated: July 2026
Sample size: n=4814
Category: [Mobile vs web pattern differences](https://design.lazyweb.com/blog/category/mobile-vs-web-pattern-differences)
Tags: experiments, mobile, web, pricing, landing-page
HTML: https://design.lazyweb.com/blog/mobile-vs-web-experiment-mix
Markdown: https://design.lazyweb.com/blog/mobile-vs-web-experiment-mix.md

**Answer.** The experiment corpus is mobile-dominated ~12:1 — 4,449 detected mobile experiments vs 365 web (of 4,814 total) [1]. Where they test differs sharply: web concentrates on navigation, announcement bars, pricing tables and forms, while mobile concentrates on offers and pricing on the paywall [2]. Hero and CTA are heavily tested on both. Use the platform-specific hot spots to prioritize your own test roadmap.

> 4,449 mobile experiments vs 365 web (of 4,814 detected) — a ~12:1 split — Lazyweb Research, July 2026.

## Finding: same volume gap, different focus areas

Mobile carries ~12x the detected experiments of web [1]. The area mix (annotated observations) shows each platform's obsessions:

| Area | Web | Mobile |
| --- | --- | --- |
| HERO | 272 | 216 |
| NAV | 144 | — |
| CTA | 91 | 141 |
| ANNOUNCEMENT BAR | 63 | — |
| PRICING TABLE / PRICING | 47 | 254 |
| OFFER | 46 | 255 |
| FORM | 37 | — |
| SOCIAL PROOF | 34 | 14 |

Web-only areas (nav, announcement bar, form) reflect a page-diff surface; mobile-heavy areas (offer 255, pricing 254) reflect paywall economics [2].

## How to apply this

If you run a mobile app, the corpus says the highest-leverage tests cluster on the paywall offer and price (255 offer + 254 pricing annotations) — test intro pricing, trial framing, and price points before chrome [2]. If you run a web product, tests cluster on hero messaging, navigation, and pricing-table structure, plus announcement bars and forms that have no mobile-paywall analog. Match your roadmap to where the platform's leverage actually sits rather than copying the other side.

## Caveats

Web experiments (n=365) are ~12x fewer than mobile, so every web-side number here is an absolute count with explicit n, never a rate implying parity [1]. All 365 web experiments share one placeholder canonical screen id, so they are page diffs and not joinable to a screen graph — do not compute web experiment positions [3]. 'Detected experiment' means an observed before/after change, not a measured A/B lift.

## The numbers

| Stat | Computed from |
| --- | --- |
| 4,449 mobile vs 365 web detected experiments (of 4,814) | experiment_platform_split |
| Area mix: web HERO 272/NAV 144/CTA 91/PRICING TABLE 47/OFFER 46; mobile OFFER 255/PRICING 254/HERO 216/CTA 141 | experiment_area_mix_by_platform |
| 365 web experiments all share placeholder canonical screen id 23588; mobile span 1,357 distinct screens | web_experiments_not_screen_anchored |

## Methodology

Universe: 4,814 detected experiments and 2,160 area annotations across mobile and web corpora, July 2026. Method: count experiments and area annotations by platform. Caveat: detected before/after changes with model-assigned areas, not measured A/B lift; web n is thin.

## Sources & citations

- [1] Lazyweb Research analysis of 4,814 detected experiments (mobile + web corpora), July 2026. 4,449 mobile, 365 web.
- [2] Lazyweb Research analysis of 2,160 experiment area annotations (mobile + web corpora), July 2026. Area mix by platform from experiment annotations.
- [3] Lazyweb Research analysis of 365 web detected experiments (web corpus), July 2026. All web experiments point to one placeholder canonical screen; captured as page diffs.

## Related questions

- [Should a mobile paywall use one momentum CTA or a web-style multi-tier pricing table?](https://design.lazyweb.com/blog/mobile-paywall-cta-vs-web-pricing-experiments)
- [Do mobile paywalls and web pricing pages actually differ for the same product?](https://design.lazyweb.com/blog/mobile-paywall-vs-web-pricing-page-differences)
- [Where do web products concentrate their experiments, and what does that mean for my roadmap?](https://design.lazyweb.com/blog/web-experiment-focus-areas)
- [Are mobile onboarding flows longer than web onboarding?](https://design.lazyweb.com/blog/are-mobile-onboarding-flows-longer-than-web)
- [Why would an app push subscriptions to web checkout instead of billing in-app?](https://design.lazyweb.com/blog/why-apps-push-subscriptions-to-web-checkout)
- [Do signup and checkout look different on mobile vs web in the data?](https://design.lazyweb.com/blog/mobile-vs-web-signup-checkout-surfaces)
- [What share of web product screens are acquisition and monetization surfaces?](https://design.lazyweb.com/blog/web-pricing-page-screen-mix)
- [Can I trust a benchmark that compares the same product's mobile app vs its website?](https://design.lazyweb.com/blog/same-product-mobile-web-comparison-feasibility)

## Explore the evidence

- [Billing toggle experiment kit](https://design.lazyweb.com/blog/billing-toggle-experiment-kit?utm_source=lazyweb&utm_medium=research&utm_campaign=billing-toggle-kit)
- [Cal AI annual-plan and trial presentation](https://design.lazyweb.com/blog/cal-ai-paywall-annual-plan-and-trial)
- [Monthly versus annual billing toggles](https://design.lazyweb.com/blog/monthly-vs-annual-billing-toggle-pricing)
- [Billing cadence versus plan tiers](https://design.lazyweb.com/blog/annual-billing-toggle-vs-plan-tiers)
- [Cal AI trial-introduction screens](https://design.lazyweb.com/flow/cal-ai/onboarding-paywall)

## Continue your research

[Connect Lazyweb to your coding agent](https://www.lazyweb.com/mcp-install)