Pool vs MyPoolGuy

Stop guessing. Stop Googling. Pool-Proof walks you step-by-step through a complete spa or hot tub water chemistry session using Taylor K-2006 Platinum test kit methodology — the gold standard used by pool professionals. THE RIGHT ORDER, EVERY TIME Water chemistry is order-dependent. Balancing pH before alkalinity causes instability. Adding chlorine when pH is acidic corrodes equipment. Pool-Proof enforces the correct sequence: Free Chlorine, Total Alkalinity, pH, Calcium Hardness. Every time, without fail. PRECISE DOSE RECOMMENDATIONS Pool-Proof calculates exactly how much of each chemical to add — baking soda, muriatic acid, liquid chlorine, Cal-Hypo shock, dry acid, sodium carbonate (soda ash), calcium increaser, or granular bromine. Every dose follows the 50% Staged Dosing rule: add half the calculated amount, run jets for 45 minutes, then re-test. This prevents chemical bounce and over-treatment. Dose cards show liquid amounts in fl oz and mL, plus granular equivalents in household measures (tsp, tbsp, cup) — so you can use whatever product you have on the shelf. THE LSI SCORE The Langelier Saturation Index (LSI) is your water balance report card. Pool-Proof calculates it using CYA-corrected alkalinity per Taylor K-2006 methodology. A large color-coded score — from corrosive to scaling — gives you the full picture at a glance. CHLORINE & BROMINE Switch between chlorine and bromine mode from the Setup screen. Bromine mode adjusts all target ranges, skips CYA correction, and uses the correct dosing rates for granular bromine automatically. WET-HAND FRIENDLY Built for poolside use. Giant tap targets. Physical-style +/- drop counters that mirror the real test kit workflow. No tiny keyboard fields. Dark theme for outdoor readability. THE VAULT Save every test session. Review past LSI scores and readings. Spot trends over time. All history is stored privately on your device — no account required, no cloud sync. BUILT-IN SAFETY GUARDRAILS Pool-Proof includes the same safety rules professional techs follow: pH gate — chlorine dosing blocked when pH is below 7.0 Alkalinity guardrail — emergency baking soda forced when effective alkalinity drops dangerously low Acid cap — muriatic acid limited to a safe maximum per treatment cycle TA-first logic — pH corrections deferred until alkalinity is balanced FLEXIBLE FOR ANY SPA Gallons or liters volume input F or C temperature toggle Liquid or granular dose format preference Basic Mode (acrylic or fiberglass spa) or Pro Mode (plaster pool, full LSI and calcium hardness) Chlorine or bromine sanitizer COMPLETELY PRIVATE All data is stored locally on your device. No login. No subscription. No data collection. Nothing ever leaves your phone. Works with the Taylor K-2006 Platinum test kit. Trusted methodology. No guesswork. DISCLAIMER: Pool-Proof is a calculation aid designed to assist with routine residential spa maintenance. It does not replace professional water testing or licensed pool service technicians. Always follow chemical product labels and safety precautions.

MyPoolGuy is now completely FREE to download — the pool guy in your pocket, for every pool owner. Stop guessing what to put in your pool. Enter your water test readings and MyPoolGuy's dosing engine tells you exactly what to add and how much — for chlorine pools, salt water pools, bromine pools, and hot tubs. WATER TESTING MADE SIMPLE • Works with the test strips or liquid kit you already own — just enter your readings • Instant analysis of free chlorine, pH, alkalinity, calcium hardness, cyanuric acid, and salt • Clear, color-coded results you can actually understand EXACT CHEMICAL DOSING • Precise amounts based on your pool's volume — in pounds, ounces, or gallons • Chlorine, salt water, and bromine pools, plus hot tubs and spas • Step-by-step plans for common problems like algae and cloudy water • Know exactly what to buy before you walk into the store FIND A PRO • Locate pool service pros and retail pool supply stores near you • See ratings and reviews from other pool owners • Rate and review your own pool pro LOCAL DEALS • Participating local pool stores send deals and promos straight to the app SERVICE REPORTS & HISTORY • Keep a clean history of your water tests and service visits FULLY BILINGUAL • Every screen in English and Spanish — switch anytime FREE TO USE MyPoolGuy is free to download and free to use. An optional Pro subscription adds extras like trend charts and smart insights — the core toolkit stays free. Whether you're opening the pool for the season, fighting cloudy water, balancing a salt water pool, or keeping a hot tub crystal clear, MyPoolGuy gives you a straight answer in seconds. The pool guy in your pocket. Download free today.