212+ iOS apps curated and reviewed
If you already know LSPIV, this is the deeper bench. 212+ lspiv apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 2 |  | Free | 4.7★ (11K) | Yes | Yes | Sep 2026 | |
| 3 |  | Free | 4.8★ (5.4K) | No | Yes | Sep 2026 | |
| 4 |  | Free | 4.8★ (23K) | Yes | Yes | Sep 2026 | |
| 5 |  | Free | 4.8★ (7.5K) | No | No | Sep 2026 | |
| 6 |  | Free | 4.3★ (35) | No | No | Aug 2026 | |
| 7 |  | Free | 2.8★ (212) | No | No | Sep 2026 | |
| 8 |  | Free | 1.7★ (612) | Yes | No | Aug 2026 |
This application enables large-scale particle image velocimetry (LSPIV) using a smartphone. It offers a non-intrusive method for measuring water surface velocity distribution in both field and lab settings. The app provides instant ortho-rectification of captured images without needing ground control points.
Monitor river levels, flow rates, and flood warnings with real-time data and forecasts. Get custom alerts for your favorite waterways and visualize trends with interactive graphs. Essential for anyone living, working, or recreating near water.
Access real-time water levels, flows, and temperatures for rivers worldwide. Ideal for sports enthusiasts and professionals, it offers detailed maps, navigability information, and customizable alerts for over 40,000 hydrometric stations.
