22+ iOS apps curated and reviewed
Saturation Index Calculator is the household name in langelier saturation index, but it's far from the only option. We track 22+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.3★ (4) | No | No | May 2026 | |
| 2 |  | Free was $0.99 | — | No | Yes | Sep 2026 | |
| 3 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 4 |  | $4.99 was $9.99 | 4.2★ (14) | No | No | Sep 2026 | |
| 5 |  | Free | 4.5★ (2) | No | No | Aug 2026 | |
| 6 |  | Free was $4.99 | — | No | No | May 2026 | |
| 7 |  | $0.99 | 3.2★ (177) | No | No | Jul 2026 | |
| 8 |  | Free | 4.7★ (3) | No | No | May 2026 |
Easily calculate your pool's Langelier Saturation Index to ensure balanced water chemistry. Input key water parameters to understand potential effects on your pool equipment.
Easily calculate and track the Langelier Saturation Index for your pool water. Maintain optimal water balance for a healthy and safe swimming environment. Supports multiple units and saves your calculations over time.
This app accurately calculates properties for air, water, seawater, and sugars. It uses detailed, published formulations for precise results across various conditions, including solids level and density of corn syrup.
