Hot Tub pH & Chlorine Calc

Keep your hot tub water crystal clear and safe with Hot Tub pH & Chlorine Calc, the ultimate offline chemical calculator for small residential hot tubs and inflatable spas. This app is built to solve the most common problem for hot tub owners: knowing exactly how many chemicals to add without guessing. It works 100% offline, protecting your privacy and letting you use it in your backyard without relying on a Wi-Fi connection. Core Features: Exact Chemical Calculator: Input your current test strip readings (pH and Free Chlorine) and get precise math-based instructions. Example: "Add 12 grams of pH Decreaser (pH-)." Custom Spa Setup (My Spa): Save your water volume (Liters or Gallons) and the specific types of chemicals you use (granules, tablets, liquids). The app adjusts its algorithms for your exact setup. Rescue Guide (Troubleshooting): Dealing with cloudy water, green water, foam, or strong chlorine odors? Access our offline symptom manual for instant, step-by-step solutions. History Log: Keep a chronological record of your water tests to spot trends and maintain perfect water balance. Action-Oriented Dashboard: See your current water status at a glance, along with quick reminders for filter cleaning or water changes. Extra Tools (100% Free): Shock Mode: Automatically calculate the heavy chemical dose needed to sanitize the water from scratch after a busy weekend or to clear up green water. Integrated Pump Timer: Start a 20-minute countdown after adding chemicals so your jets can mix the water. The app will alert you when it’s safe to soak. Local Reminders: Set offline push notifications to remind you to test your hot tub's pH every 3 to 7 days. Perfect for owners of Intex, Bestway, Lay-Z-Spa, Coleman, and any residential hot tub. Download Hot Tub pH & Chlorine Calc and take the guesswork out of water maintenance today!

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