# Music notation training web app

Built a site for practicing reading music notation while learning piano. It earns on its own without promotion.

| Tag | Value | Confidence |
|---|---|---|
| Category | Software and apps | 75% |
| Earns from | Ads | 92% |
| Startup cost (estimate) | $100 to $1k | 39% (low) |
| Time (estimate) | Hands-off | 95% |
| Where | Online | 99% |
| Coding | Needs coding | 96% |

Source: [Your best passive income? (2014)](https://news.ycombinator.com/item?id=7094679), Hacker News, dejv, 2014-01-21
Page: https://allsidehustleideas.com/ideas/music-notation-training-web-app-980962

## About this data

- Sources are public, first-person accounts: interviews, podcasts and community threads.
- Cost, time and the other tags are machine estimates, each with a confidence score.
- Income figures are the owner's own claim. We don't verify them.
- Link the idea page and its source. Call income figures the owner's unverified claim, and cost and time estimates.