Which Companies Run The Most Detected A/B Tests Across Page Areas?
- By Ali Abouelatta
- n = 1,126
- Published
- Updated
- 2 min read
- experiments · saas · monetization · mobile · web
Short answer
Across 1,126 area-annotated experiments tracked by Lazyweb Research, the most-tested companies are Workday (32 annotated experiments), Navan (24), and a cluster tied at 22 — Memrise, YouTube Music, and Slack source[1]. Testing volume is spread across 362 companies with at least one detected experiment, so even the top testers are a small share of the total source[1]source[2]. The leaderboard skews toward enterprise SaaS and subscription apps source[1].
Workday leads all tracked companies with 32 detected experiments, ahead of Navan (24) and a three-way tie at 22 (Memrise, YouTube Music, Slack) — Lazyweb Research, July 2026.
Bar chart · Annotated experiments
Annotated experiments — Top testing companies
One block is about 1.1 Annotated experiments
- Workday
- 32
- Navan
- 24
- Memrise
- 22
- YouTube Music
- 22
- Slack
- 22
- Microsoft-auth
- 20
- Apple Music
- 19
- Audible
- 18
- ChatGPT
- 17
- Plantin
- 15
The finding: a long tail with an enterprise-heavy head
Detected experiments span 362 distinct companies (out of ~809 tracked apps) source[2]. The most-tested by annotated-experiment count are Workday (32), Navan (24), then Memrise, YouTube Music, and Slack (22 each), Microsoft-auth (20), Apple Music (19), and Audible (18) source[1]. The head of the list mixes enterprise SaaS (Workday, Navan, Slack, GitHub) with subscription consumer apps (music, learning) source[1].
Top testing companies
By distinct annotated experiments source[1]:
| Company | Annotated experiments |
|---|---|
| Workday | 32 |
| Navan | 24 |
| Memrise | 22 |
| YouTube Music | 22 |
| Slack | 22 |
| Microsoft-auth | 20 |
| Apple Music | 19 |
| Audible | 18 |
| ChatGPT | 17 |
| Plantin | 15 |
Workday and Navan alone account for the entire 5-company 'business' category cut, which is why that vertical is flagged as concentrated source[1]source[3].
How to apply it
Use the leaderboard to pick peers worth studying closely: if you're B2B SaaS, Workday, Navan, Slack, and GitHub are the highest-volume testers to benchmark against source[1]. For consumer subscriptions, the music and learning apps (YouTube Music, Apple Music, Memrise) show the most detected activity source[1]. High test volume signals an active experimentation culture worth learning from — but volume alone doesn't mean their changes won source[1].
Caveats
Counts are detected before/after experiments observed by Lazyweb Research, not the company's full internal test program — apps tested more heavily on tracked surfaces rank higher source[4]. 362 companies have at least one experiment, so top testers are still a thin slice source[2]. Company concentration distorts small category cuts (e.g. business) source[3].
Real in-market screens
Screens from real, in-market apps, tracked by Lazyweb Research.
Zoom1125 × 2436opens the full image 
Saturn1179 × 2556opens the full image 
Particle1206 × 2622opens the full image 
Picsart1206 × 2622opens the full image
The numbers
| # | Stat | Computed from |
|---|---|---|
| [1] | Top testers by annotated experiments: Workday 32, Navan 24, Memrise 22, YouTube Music 22, Slack 22, Microsoft-auth 20, Apple Music 19, Audible 18, ChatGPT 17, Plantin 15 | top_testing_companies |
| [2] | 362 distinct companies have at least one detected experiment, out of ~809 tracked apps | companies_with_experiments |
| [3] | Workday and Navan dominate the 5-company business category | smallSampleWarnings; top_testing_companies |
| [4] | Counts are detected before/after experiments observed in the corpus, not internal test programs | universe |
Methodology
Universe is companies ranked by distinct annotated experiments within 1,126 annotated experiments over 4,814 detected experiments across 362 companies in the ~800 tracked-apps corpus. Counts are LLM-detected before/after diffs on tracked surfaces, July 2026, not internal test programs.
Sources
- [1]
Lazyweb Research analysis of top testing companies (~800 tracked apps), July 2026
Companies ranked by distinct annotated experiments within 1,126 annotated experiments.
- [2]
Lazyweb Research analysis of 362 companies with detected experiments (~800 tracked apps), July 2026
Distinct companies with >=1 detected experiment out of ~809 tracked apps.
- [3]
Lazyweb Research analysis of category concentration (~800 tracked apps), July 2026
Business category is Workday/Navan-dominated.
- [4]
Lazyweb Research analysis of 4,814 detected experiments (~800 tracked apps), July 2026
Detected experiments are observations on tracked surfaces, not internal test logs.
Source: Lazyweb Research — proprietary analysis of real, in-market app screens. Cite as Lazyweb Research, 2026-07-07.