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- Periodic Remove Periodic from the comparison
- Harvest Lane Remove Harvest Lane from the comparison
| Attribute | Periodic Tilde Software | Harvest Lane Slate & Stone |
|---|---|---|
| Rating | 4.46 Best | 3.78 |
| Ratings | 5.45K | 8.38M Best |
| Written reviews | 612 | 1.08M Best |
| Installs (estimated) | 581K | 673M Best |
| Installs, last 30 days | 10.5K | 4.15M Best |
| Recent growth | -2.6% | -2.4% Best |
| Best chart position | #13 | #1 Best |
| Download size | 34.7 MB Best | 460.8 MB |
| Price | $1.99 | Free |
| Category | Education | Simulation |
| Developer | Tilde Software | Slate & Stone |
| Contains ads | No | Yes |
| In-app purchases | No | Yes |
| Content rating | Everyone | Everyone |
| Requires Android | 7.0 | 11 |
| Released | September 6, 2019 | December 3, 2024 |
| Last update | September 5, 2026 | September 7, 2026 |