Could musical taste become useful, portable data?
Factory paired a deliberately small contribution loop with a growing catalogue, giving people a record of taste they could build over time.
- Users
- ≈3,000
- Catalogue
- 207,000
- Artists
- 22,000
Across web, iOS, and Android
Tracks available to discover and review
Represented across the catalogue
- 1Discover
- 2Listen in Spotify
- 3Review a track
- 4Build a portable history
Founder-reported product metrics · 2024–2025. Catalogue totals describe the product at its later reported scale.
The first direction leaned more heavily on the brand. As the product developed, I moved toward a quieter interface that made logging faster and allowed people’s music to remain the focus.

Could the core behaviour work before native distribution?
The web product tested the hardest assumption first: whether people would repeatedly contribute a short record of what they were listening to.
- Reviews
- 10,000+
- Time to milestone
- 6 months
- Distribution
- Web
Contributed before the native launch
From the beginning of the web product
The core behaviour preceded iOS and Android
- 1Invite people
- 2Discover a track
- 3Write a review
- 410,000+ reviews
Founder-reported product metric · 2024–2025. This milestone was reached before the iOS and Android applications launched.
Would native distribution accelerate adoption?
With the contribution loop established on the web, the native launch tested whether easier access through iOS and Android could expand the audience.
- Before native apps
- 2,000
- 30 days after launch
- ≈3,000
- User growth
- +50%
Users on the web product
Users across web, iOS, and Android
Within 30 days of the native launch
- 1Web baseline
- 2Native launch
- 3iOS and Android
- 430-day measure
Founder-reported product metric · 2024–2025. The comparison uses the reported user counts before launch and 30 days later, not an inferred time series.