250+ iOS apps curated and reviewed
Finding the right npkalc apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (16) | No | Yes | Oct 2026 | |
| 2 |  | Free | — | No | No | May 2026 | |
| 3 |  | Free | 3.3★ (26) | No | No | Nov 2026 | |
| 4 |  | Free | 1.0★ (1) | No | Yes | May 2026 | |
| 5 |  | $2.99 | 3.3★ (8) | No | No | Oct 2026 | |
| 6 |  | Free | 4.9★ (410K) | Yes | No | Nov 2026 | |
| 7 |  | Free | 4.7★ (61K) | No | No | Nov 2026 | |
| 8 |  | Free | — | No | No | Aug 2026 |
This app helps calculate fertilizer needs for various applications, supporting both granular and liquid types with flexible unit inputs. It's designed for anyone managing lawns, gardens, or larger agricultural areas.
Plan your farm's fertilizer applications with this reference tool. Select your crop and desired yield to determine the necessary vital nutrients. Save and email results for future planning.
