Landing Page A/B Testing for Deep Link Campaigns

When users click a deep link on a device where the app isn't installed, they hit a landing page. This page has one job: convince the user to install the app or take an alternative action. A/B testing these landing pages is one of the highest-leverage optimizations you can make because small conversion improvements multiply across all your campaigns.

For destination testing, see A/B Testing Deep Link Destinations. For CTA testing, see CTA A/B Testing for App Install and Deep Links.

Tolinku A/B testing dashboard for smart banners The A/B tests list page showing test names, status, types, and variant counts.

What to Test on Landing Pages

High-Impact Elements

Element	Impact on Conversion	Testing Difficulty
Headline	High (20-40% lift possible)	Easy
CTA button text	High (10-30% lift)	Easy
CTA button color/size	Medium (5-15% lift)	Easy
Social proof	High (15-30% lift)	Medium
Page layout	Medium (10-20% lift)	Medium
Images/screenshots	Medium (10-25% lift)	Medium
Page length	Medium (5-15% lift)	Easy
App store badges	Low (2-5% lift)	Easy

Test Priority

Start with the highest-impact, lowest-effort tests:

Headline: Test benefit-focused vs. feature-focused
CTA text: Test "Download Free" vs. "Get Started" vs. "Try It Now"
Social proof: Test ratings/reviews vs. user count vs. testimonials
Page structure: Test short (above-fold only) vs. long (scrollable)

Implementation

Server-Side Variant Assignment

Assign variants before the page renders:

// Landing page server
app.get('/campaign/:slug', (req, res) => {
  const userId = req.cookies.visitor_id || generateVisitorId();
  const experiment = getActiveExperiment('landing_page', req.params.slug);

  if (experiment) {
    const variant = assignVariant(userId, experiment.id);

    res.cookie('visitor_id', userId, { maxAge: 30 * 24 * 60 * 60 * 1000 });

    res.render('landing', {
      ...getBasePageData(req.params.slug),
      ...variant.pageConfig,
      experimentId: experiment.id,
      variantId: variant.id,
    });
  } else {
    res.render('landing', getBasePageData(req.params.slug));
  }
});

Page Configuration per Variant

const landingPageExperiments = {
  headline_test_v3: {
    id: 'headline_test_v3',
    variants: [
      {
        id: 'benefit_focused',
        weight: 50,
        pageConfig: {
          headline: 'Save 2 Hours Every Week',
          subheadline: 'The project management app that automates the tedious stuff.',
          ctaText: 'Start Saving Time',
        },
      },
      {
        id: 'feature_focused',
        weight: 50,
        pageConfig: {
          headline: 'Project Management Made Simple',
          subheadline: 'Tasks, timelines, team collaboration, and automation in one app.',
          ctaText: 'Try It Free',
        },
      },
    ],
    primaryMetric: 'app_install',
    minSampleSize: 3000,
  },

  social_proof_test_v1: {
    id: 'social_proof_test_v1',
    variants: [
      {
        id: 'user_count',
        weight: 33,
        pageConfig: {
          socialProof: { type: 'user_count', text: 'Used by 500,000+ teams worldwide' },
        },
      },
      {
        id: 'rating',
        weight: 33,
        pageConfig: {
          socialProof: { type: 'rating', stars: 4.8, reviewCount: 12000, store: 'App Store' },
        },
      },
      {
        id: 'testimonial',
        weight: 34,
        pageConfig: {
          socialProof: {
            type: 'testimonial',
            quote: 'Replaced 3 tools for our team.',
            author: 'Sarah K., Engineering Manager',
          },
        },
      },
    ],
    primaryMetric: 'app_install',
    minSampleSize: 2000,
  },
};

Landing Page Templates

Short Landing Page (Above the Fold Only)

<div class="landing-short">
  <header>
    <img src="app-icon.png" alt="App Icon" class="app-icon" />
    <h1>{{headline}}</h1>
    <p>{{subheadline}}</p>
  </header>

  <div class="cta-section">
    <a href="{{appStoreUrl}}" class="cta-button">{{ctaText}}</a>
    <div class="store-badges">
      <img src="app-store-badge.svg" alt="Download on the App Store" />
      <img src="play-store-badge.svg" alt="Get it on Google Play" />
    </div>
  </div>

  <div class="social-proof">
    {{socialProofComponent}}
  </div>
</div>

Long Landing Page (Scrollable with Features)

<div class="landing-long">
  <!-- Hero (same as short) -->
  <section class="hero">
    <h1>{{headline}}</h1>
    <p>{{subheadline}}</p>
    <a href="{{appStoreUrl}}" class="cta-button">{{ctaText}}</a>
  </section>

  <!-- App screenshots -->
  <section class="screenshots">
    <div class="screenshot-carousel">
      {{#each screenshots}}
        <img src="{{this.url}}" alt="{{this.alt}}" />
      {{/each}}
    </div>
  </section>

  <!-- Features -->
  <section class="features">
    {{#each features}}
      <div class="feature">
        <img src="{{this.icon}}" alt="" />
        <h3>{{this.title}}</h3>
        <p>{{this.description}}</p>
      </div>
    {{/each}}
  </section>

  <!-- Social proof -->
  <section class="testimonials">
    {{socialProofComponent}}
  </section>

  <!-- Final CTA -->
  <section class="final-cta">
    <h2>Ready to get started?</h2>
    <a href="{{appStoreUrl}}" class="cta-button">{{ctaText}}</a>
  </section>
</div>

Tracking

Landing Page Events

// Page load
analytics.track('landing_page_viewed', {
  experimentId: experimentId,
  variantId: variantId,
  campaign: campaignSlug,
  source: utmSource,
  device: deviceType, // mobile, tablet, desktop
});

// CTA click
analytics.track('landing_page_cta_clicked', {
  experimentId: experimentId,
  variantId: variantId,
  ctaPosition: 'hero', // or 'bottom', 'sticky'
  campaign: campaignSlug,
});

// App store redirect
analytics.track('app_store_redirect', {
  experimentId: experimentId,
  variantId: variantId,
  store: 'ios', // or 'android'
});

// Install (tracked via deferred deep link)
analytics.track('app_installed_from_landing', {
  experimentId: experimentId,
  variantId: variantId,
  timeFromPageView: timeDelta,
});

Attribution Chain

The full attribution chain for landing page tests:

Ad click → Landing page (variant assigned) → CTA click → App store → Install → First open (deferred deep link matches)

Each step has drop-off. Measure the full chain to understand the true impact of landing page changes.

Common Test Results

Headline Tests

Variant	Example	Typical Result
Benefit-focused	"Save 2 hours every week"	Higher conversion for productivity apps
Feature-focused	"Task management + team chat"	Higher conversion for tool-comparison shoppers
Social proof	"Join 500K+ teams"	Higher conversion for social/community apps
Question	"Still managing projects in spreadsheets?"	Higher conversion when pain point is clear

CTA Text Tests

CTA Text	Typical Conversion	Best For
"Download Free"	High	Free apps
"Get Started"	Medium-high	SaaS, productivity
"Try It Free"	High	Apps with trials
"Start Your Free Trial"	Medium	Subscription apps
"Install Now"	Low	Feels pushy
"Learn More"	Very low	Doesn't commit the user to action

Page Length Tests

Page Type	Conversion Rate	Engagement
Short (above-fold)	Higher for brand-aware users	Low time on page
Long (features + social proof)	Higher for unaware users	High time on page

Rule of thumb: If users come from search or organic (they chose to look), short pages win. If users come from ads (they were pushed), longer pages win because they need more convincing.

Mobile-Specific Considerations

Load Time

Mobile landing pages must load in under 2 seconds. Every additional second reduces conversions by 7-10%.

// Optimize for mobile
const mobileOptimizations = {
  images: 'Compress to WebP, lazy load below fold',
  fonts: 'System fonts only, no custom font downloads',
  scripts: 'Defer non-critical JS, inline critical CSS',
  layout: 'Single column, large tap targets (44x44px minimum)',
};

Smart Banners vs. Landing Pages

For users who arrive on your website via deep link (not a dedicated landing page), smart banners may outperform full landing pages:

Approach	Pros	Cons
Dedicated landing page	Full control, optimized messaging	Requires build + maintenance
Smart banner on existing page	Low effort, contextual	Less prominent, lower conversion
Full-screen interstitial	High visibility	Google penalizes mobile interstitials

Test smart banners vs. landing pages for your specific traffic sources.

Best Practices

One test at a time: Don't test headline and CTA simultaneously unless you have enough traffic for a multivariate test.
Minimum 2 weeks: Run every test for at least 14 days to account for day-of-week patterns.
Pre-calculate sample size: Know how many visitors you need before starting.
Track installs, not just clicks: CTA click rate is meaningless if users don't install.
Segment by device: iOS and Android users may respond differently to the same page.
Keep the winner running: After declaring a winner, don't stop. Run the next test against the new baseline.

For A/B testing features, see Tolinku A/B testing. For landing page setup, see the landing page A/B testing docs.

A/B Testing conversions Deep Linking experimentation Landing Pages mobile-development optimization User Acquisition

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