How Many Detected Experiments Touch Social Proof, and What Changed?
- By Ali Abouelatta
- n = 120
- Published
- Updated
- 2 min read
- experiments · ux-patterns · landing-page · design
Short answer
Lazyweb Research detected 120 before/after experiments across 62 companies whose diff mentions social proof — about 2.5% of the 4,814-experiment corpus source[1]source[2]. Separately, 48 experiments are annotated directly in a 'social proof' change area, and 18 hero-area experiments also touch social proof number[3]number[4]. Most social-proof changes are additions (37 added vs 3 removed among classifiable diffs) number[5].
120 of 4,814 detected experiments (62 companies) mention social proof; among classifiable changes, additions beat removals 37 to 3 — Lazyweb Research, July 2026.
Bar chart · Count
Count — Where it shows up and which direction it moves
One block is about 2.6 Count
- Added
- 37
- Removed
- 3
- Mixed
- 6
- Unclassifiable
- 74
How much social proof gets tested
Of 4,814 detected experiments spanning 362 companies (2022-10-10 to 2026-07-04), 120 mention social proof — testimonial, star rating, review count, user count, or 'trusted by' — across 62 distinct companies source[1]source[2]. That makes it a mid-frequency tactic: more touched than free-plan removal (10) but far behind discount badges (1,133) number[6]number[7].
Where it shows up and which direction it moves
By annotated change area, 'social proof' is a named area on 48 experiments; hero remains the most-tested area overall at 405 experiments, 18 of which also mention social proof number[3]number[4]number[8]. Direction of the social-proof changes:
| Direction | Count |
|---|---|
| Added | 37 |
| Removed | 3 |
| Mixed | 6 |
| Unclassifiable | 74 |
Among the changes we could classify, additions outnumber removals roughly 12:1 number[5].
How to apply it
If you're deciding whether social proof is worth a test slot, the corpus shows it's tested less than pricing or CTA copy but almost always in the additive direction — teams add it and keep it (0 of 29 add-screens later removed it) number[9]. A concrete pattern from the corpus: voice-notes scaled up its testimonial wall and framed an aggregate '500,000+' user claim rather than a bare assertion number[10].
Caveats
Keyword tagging counts experiments that mention social proof, not a curated set of pure social-proof tests; treat 120 as an upper-ish bound on the theme source[2]. Learnings are LLM-inferred rationale for observed diffs, not confirmed test outcomes.
Real in-market screens
Screens from real, in-market apps, tracked by Lazyweb Research.
Chaton1170 × 2532opens the full image 
Brainly1125 × 2436opens the full image 
Hoopla1206 × 2622opens the full image 
Lose It1206 × 2622opens the full image
The numbers
| # | Stat | Computed from |
|---|---|---|
| [1] | 120 experiments mention social proof, 62 companies | tactic_mentions__social_proof |
| [2] | 4,814 detected experiments across 362 companies | total_detected_experiments; distinct_companies_in_experiment_corpus |
| [3] | 48 experiments annotated in the 'social proof' area | annotation_area_breakdown: social proof 48 |
| [4] | 18 hero-area experiments also mention social proof (of 405) | hero_social_proof_experiments |
| [5] | 37 added / 3 removed / 6 mixed / 74 other | direction_split__social_proof |
| [6] | 10 experiments mention free-plan removal | tactic_mentions__free_plan_removal |
| [7] | 1,133 experiments mention discount badges | tactic_mentions__discount_badges |
| [8] | hero is the most-annotated area at 405 experiments | annotation_area_breakdown: hero 405 |
| [9] | 0 of 29 add-screens later removed social proof | retention__social_proof |
| [10] | voice-notes scaled testimonial cards; 'Loved by 500,000+' | qualitative: voice-notes |
Methodology
Universe: 4,814 detected before/after UI experiments (362 companies, 1,358 canonical screens), of which 120 mention social proof; keyword tag on what_changed+learning plus annotation areas, July 2026 pull. Learnings are LLM-inferred, not measured A/B results.
Sources
- [1]
Lazyweb Research analysis of 4,814 detected experiments (362 companies, 1,358 canonical screens), July 2026
Keyword-tagged on what_changed+learning; distinct companies via control screenshot join.
- [2]
Lazyweb Research analysis of 120 detected experiments (social-proof-mentioning subset), July 2026
Tagging matches experiments that mention the tactic, not a curated pure-tactic set.
Source: Lazyweb Research — proprietary analysis of real, in-market app screens. Cite as Lazyweb Research, 2026-07-07.