5+ iOS apps curated and reviewed
Out of 5+ glenn ludlow apps on iOS, 4 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.0★ (1) | No | No | Jul 2026 | |
| 2 |  | Free | — | No | No | Aug 2026 | |
| 3 |  | Free | — | No | No | Jul 2026 | |
| 4 |  | Free | — | No | Yes | Aug 2026 |
This app helps boat operators understand navigation lights, shapes, and sounds. It features a unique drawing-based search and a visual browser for quick reference. Offline access to a comprehensive database makes it ideal for on-water use and classroom instruction.
