55+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our ppfd free list covers 55+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (118) | Yes | Yes | Sep 2026 | |
| 2 |  | Free | 4.6★ (4.9K) | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.5★ (2.6K) | No | Yes | Sep 2026 | |
| 4 |  | Free | 4.7★ (8.3K) | No | No | Sep 2026 | |
| 5 |  | Free | 4.0★ (1) | No | Yes | Jul 2026 | |
| 6 |  | Free | 4.7★ (3) | No | Yes | Aug 2026 | |
| 7 |  | Free | — | No | No | May 2026 | |
| 8 |  | Free | — | No | No | Aug 2026 |
This app measures light intensity for plants, converting LUX to PPFD and DLI. It offers advanced light mapping, uniformity analysis, and efficiency insights to optimize plant growth. Customize profiles for different environments and growth stages.
This app acts as a professional-grade light meter for plants, measuring PAR, PPFD, DLI, and more using your device's camera. It helps optimize plant lighting by providing accurate readings and in-app guides, with optional advanced features available through purchase.
Transform your smartphone into a professional light meter. Measure illuminance and color temperature with scientifically validated accuracy, trusted by professionals. Requires a simple diffuser for precise readings.
