experiment-coach vs whatidid
experiment-coach is a plugin bundle for AI coding tools published by growthack88. Marketplaces we read that list it: 1 (Community GitHub marketplaces). whatidid is a plugin bundle for AI coding tools published by microsoft. Marketplaces we read that list it: 1 (Copilot CLI: github/awesome-copilot). As of our marketplace pass on 2026-11-10. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  experiment-coach |  whatidid |
|---|---|---|
| Community marketplace growthack88/growth-marketing-os | Listed Version: not stated Forks (GitHub): 26 Stars (GitHub): 129 Not marked · First seen |
Not listed |
| Copilot CLI: github/awesome-copilot | Not listed | Listed Version: 1.0.0 Forks (GitHub): 10 Stars (GitHub): 52 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | experiment-coach | whatidid |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 129 (better) | 52 (worse) |
| Forks (GitHub) (differs) | 26 (better) | 10 (worse) |
| Last release (differs) | Not published | 2026-10-23 |
| Where it runs | Installs as a plugin bundle | Installs as a plugin bundle |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 6 | 2 |
| Licence (differs) | Not stated | MIT |
| Repository (differs) | github.com/growthack88/growth-marketing-os | github.com/microsoft/what-i-did-copilot |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-20 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
experiment-coach
Experiment Coach: validate ideas before launch (interviews, smoke tests, fake doors, pre-sales) and run growth experiments after it (pass lines, sample sizes, A/B readouts, experiment log), in Arabic and English, with no invented benchmarks.
whatidid
Turn your Copilot sessions into proof of impact — research-grounded HTML reports with effort estimation, skills analysis, and ROI metrics from local session logs.
How to run each
experiment-coach As a Claude Code plugin
/plugin marketplace add growthack88/growth-marketing-os
/plugin install experiment-coach@growth-marketing-oswhatidid
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: experiment-coach · What it can do: whatidid · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/github/awesome-copilot/blob/HEAD/.github/plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.