Saline: Saltwater Pool Calc

Saltwater pool chemistry that knows your cell. Per-cell salt targets for Hayward, Pentair, Jandy. Brand-cited dosing. Pay once for Pro.

Pay once for Pro. No subscription, no ads, no account. Works offline.

Saline is the iOS chemistry assistant for saltwater pool owners. Enter your test readings — free chlorine, pH, total alkalinity, calcium hardness, cyanuric acid, salt, water temperature — and get exact doses scaled to your pool volume. Cell-aware: pick your Hayward TurboCell, Pentair IntelliChlor, or Jandy TruClear and Saline tunes salt targets and recommendations to that specific cell.

Features • Brand-cited dose math for BioGuard, HTH, Clorox, Pool Essentials, Leslie's, and generics • Test & Adjust: 7-parameter readings → recommendations with manufacturer-cited dose math • CSI (Calcium Saturation Index) calculation — the metric that predicts SWG cell longevity • SWG-specific FC/CYA guidance — 5 % ratio, not the 7.5 % manual-chlorine rule • Borates calculator — TFP's recommended pH-stabilizer that most pool apps ignore • Salt addition calculator with cell-brand-specific targets • Named-source citations: Trouble Free Pool wiki, manufacturer documentation • Universal app for iPhone and iPad

For pool owners who don't want to memorize forum threads. SWG (saltwater) pools 8,000–60,000 gallons.

Free download with a 2-day full-feature trial. $6.99 one-time unlocks Saline Pro permanently — no subscription, no ads, no account, no cloud.

Privacy: Saline collects nothing. No analytics, no accounts, no network requests. Your settings live on your device.