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- Hollow Signal Remove Hollow Signal from the comparison
- Northwind Notes Remove Northwind Notes from the comparison
| Attribute | Hollow Signal Hollow Pine | Northwind Notes Northwind Labs |
|---|---|---|
| Rating | 4.08 Best | 3.18 |
| Ratings | 3.36K | 4.34M Best |
| Written reviews | 451 | 1.06M Best |
| Installs (estimated) | 263K | 42M Best |
| Installs, last 30 days | 5.8K | 10.4M Best |
| Recent growth | +40.9% Best | +2.5% |
| Best chart position | #2 | #1 Best |
| Download size | 1.16 GB | 32.1 MB Best |
| Price | $2.99 | Free |
| Category | Action | Productivity |
| Developer | Hollow Pine | Northwind Labs |
| Contains ads | No | No |
| In-app purchases | No | Yes |
| Content rating | Teen | Everyone |
| Requires Android | 7.0 | 11 |
| Released | June 3, 2026 | March 8, 2018 |
| Last update | August 26, 2026 | September 6, 2026 |