# Windows Phone to-do app sold in the app store

Built a to-do app for Windows Phone in evenings and sold it through the app store.

| Tag | Value | Confidence |
|---|---|---|
| Category | Software and apps | 95% |
| Earns from | One-time sales | 95% |
| Startup cost (estimate) | Under $100 | 54% (low) |
| Time (estimate) | Hands-off | 90% |
| Where | Online | 98% |
| Coding | Needs coding | 99% |

Source: [Ask HN: Are you working on any side projects that make "small/passive" income?](https://news.ycombinator.com/item?id=2358570), Hacker News, nigelsampson, 2011-03-23
Page: https://allsidehustleideas.com/ideas/windows-phone-to-do-app-sold-in-the-app-store-1ccfe2

## 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.