AquaBalance: Pool Calculator

Test your water and get the exact doses. AquaBalance tells you what to add to your pool or hot tub, how much and in what order, in cups, ounces or pounds, using the products you already have. No account. No forced ads. Everything stays on your phone and works offline. WHAT IT DOES • Checks free chlorine, combined chlorine, pH, total alkalinity, calcium hardness, stabilizer (CYA), salt and bromine • Doses in the right order, with waiting times and safety instructions • Practical amounts you can actually measure: cups, fl oz, oz and lb (or mL, g and kg) • Chlorine targets that follow your stabilizer level (FC/CYA) • pH doses based on your alkalinity, not a generic chart • Saturation index (CSI) to protect plaster, tile and equipment • "What to do now" checklist with progress for every reading • Step-by-step SLAM guide for green or cloudy water • Calculators: chlorine, pH, alkalinity, calcium, stabilizer, salt, water replacement and pool volume by shape • Guides: opening, closing and chemical safety • Pools and hot tubs: liquid chlorine, tablets, salt water (SWG) and bromine • Your own products: enter the strength printed on your labels • Ideal ranges you can adjust for each pool • Reminders to test the water, clean the filter and add chlorine NEUTRAL RECOMMENDATIONS Products are named by active ingredient, never by brand. The app doesn't sell chemicals. PREMIUM (OPTIONAL) Every calculation and recommendation is free, for up to 3 pools or hot tubs. The free version shows one small banner on the home screen, never pop-ups or videos. Premium removes it and adds unlimited reading history, trend charts, unlimited pools and hot tubs, unlimited reminders, and CSV export and backup. Choose monthly, yearly (with a 7-day free trial) or a one-time lifetime purchase. PRIVACY No sign-up, no location, no contacts. Your pool data stays on your device. The free version's banner is served by Google AdMob. Available in English, Portuguese, Spanish, French, German and Italian. Recommendations are estimates and depend on how accurate your test is. Always follow the product label and never mix chemicals.

First release: diagnosis and doses in the right order, practical measures, calculators, guides, reminders, history and 6 languages. Tell us what you think in Settings › Feedback and contact.