PoolDose: Pool Calculator

Enter your test-strip readings to see what to add now: product, strength and amount in your units. Each reading has a status word, with water balance explained in words. For pools and hot tubs using chlorine, bromine, biguanide (Baquacil) or salt systems, at any volume, including spas under 1,000 gallons. Today's dose is always free. Logging adds tests to a local history; export is free. A one-time purchase unlocks full history and trends, every body of water and import of old logs. Restore purchase is available in Settings. No account. No subscription. Data is stored only on your device and is not copied to iCloud. PoolDose makes no network requests of its own; purchases use Apple's StoreKit. No permissions requested and no third-party SDK.