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- Keyline Remove Keyline from the comparison
- Northwind Notes Remove Northwind Notes from the comparison
| Attribute | Keyline Quill & Key | Northwind Notes Northwind Labs |
|---|---|---|
| Rating | 3.79 Best | 3.18 |
| Ratings | 718K | 4.34M Best |
| Written reviews | 132K | 1.06M Best |
| Installs (estimated) | 51.3M | 42M Best |
| Installs, last 30 days | 568K | 10.4M Best |
| Recent growth | +21.2% Best | +2.5% |
| Best chart position | #2 | #1 Best |
| Download size | 13.4 MB Best | 32.1 MB |
| Price | Free | Free |
| Category | Productivity | Productivity |
| Developer | Quill & Key | Northwind Labs |
| Contains ads | No | No |
| In-app purchases | Yes | Yes |
| Content rating | Everyone | Everyone |
| Requires Android | 11 | 11 |
| Released | December 6, 2019 | March 8, 2018 |
| Last update | September 21, 2026 | September 6, 2026 |