Stopwatch´ vs Pool & Spa Buddy

A simple, precise stopwatch.

Test your water, type in the numbers, and Pool & Spa Buddy tells you what is off, what to add, how much, and in what order. WHAT IT DOES Reads your test Enter pH, free chlorine (or bromine), total alkalinity, calcium hardness, and cyanuric acid from any strip or kit. Each reading is graded against the ideal range on a color scale you can read at a glance. Gives you a treatment plan One tap and you get a plain-English plan: which parameter to fix first, what product to use, and the dose for your actual water volume. Alkalinity before pH, pH before chlorine, re-test between steps. Water Look Photograph cloudy, green, foamy or brown water, or pick a photo you already have. You get the look, the usual causes, and what to test first. A photo cannot read pH or chlorine, so Water Look never gives a number; the strips still do the measuring. Knows a spa is not a small pool Switch between Pool, Salt and Spa. A spa runs hotter, turns its water over faster, is often sanitized with bromine, and a dose that is a rounding error in 15,000 gallons will overshoot badly in 350. The ranges and the math change with the vessel. Answers the follow-up Ask in your own words: why the water is cloudy, what cyanuric acid actually does, how often to test. Plain answers, no chemistry degree needed. Gear that fits Bluetooth testers, test kits and chemicals worth owning, with links to eBay. WHO IT'S FOR Anyone who owns a pool, a hot tub, or both and is tired of guessing at the chemical aisle. PRIVACY No account, no location. Your readings, saved plans and the dosing math stay on your phone. Three things leave it, and only when you use them: the question you type into Ask goes to our AI service to produce the answer; a Water Look photo goes to Google Gemini to describe how the water looks and is not stored by us; and if you connect an iopool sensor, your key stays on your phone and is used only to read that sensor. Pool & Spa Buddy gives general guidance for residential pools and spas. Always follow the directions and safety warnings on the chemical product itself. As an eBay Partner, Odam Solutions may be compensated if you make a purchase through a gear link. Built by Odam Solutions LLC in Washington state. Questions or bugs: jeremy@odamsolutions.com. We read every message.