Pool Math by TroubleFreePool vs Sun Sizer

PoolMath makes swimming pool care, maintenance and management easy by tracking chlorine, pH, alkalinity and other levels to help calculate how much salt, bleach and other chemicals to add. Keep swimming in your TroubleFreePool with Pool Math. Crystal clear algae free pool water is what Trouble Free Pool Math is committed to. Pool Math performs all the calculations you need to keep your chlorine, pH, calcium, alkalinity, and stabilizer levels balanced. Why choose Pool Math over the others? Other apps claim to make testing easy by using test strips and your phone's camera. Unfortunately, this is simply too good to be true. Test strips are notoriously inaccurate and end up costing you much more money in both chemicals and the tests themselves in the long run. Trouble Free Pool believes using a proper test kit is much easier, effective, and economical in the long run. By following these calculations the pool owner achieves and maintains crystal clear water without reliance on the often unproductive advice and unneeded expense from pool stores. Pool Math's great features include: • Calculators for pH, Free Chlorine, Calcium Hardness, Salt, Total Alkalinity, Calcium Hardness, Borates, CSI • Track Maintenance: Backwashing, Vacuuming, Filter Cleaning, Filter Pressure, SWG Cell %, Flow Rate • Track Chemical Additions • Track Weather conditions with your logs • Calculate the Effects of Adding chemicals to your pool • Bleach Price Calculator - Find the best deals on bleach easily • Summary page to see an overview of test results and chemical additions • Data backup / Export Premium Subscribers get access to these additional features: • Unlimited Test Log History Storage • Maintenance Reminders • Cloud Sync/Backup • Sync across multiple devices • Unlimited Pool / Spa Configurations • Test Log CSV Import / Export Pool Math Premium Subscription details: • Auto-renewable subscription • 1 year for $7.99 USD • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration of 1 year) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. • Privacy Policy & Terms of Use: http://poolmathapp.com/privacy/

Sun Sizer Pro is a solar design toolkit for installers, DIY builders and off-grid homesteaders. Size the array, check the wiring, measure the site and hand the client a clean PDF — all on your phone, even with no signal on the roof. Everything runs on the device. No account, no cloud, no ads, and nothing you enter ever leaves your phone. DESIGN THE ARRAY • String Sizing — minimum and maximum panels per string from your coldest and hottest site temperatures, checked against the inverter's voltage window. • Inverter Match — DC:AC ratio, current per MPPT input and combiner checks. • Area → Panels — enter roof length, width and fire setbacks and see a to-scale layout of how many panels fit, in portrait or landscape. • Row Spacing — shade-free row pitch for a 9 am–3 pm window on the shortest day, now including sloped ground. WIRE IT SAFELY • Voltage Drop — AWG or mm², copper or aluminum, AC or DC. • Ampacity & OCPD — NEC-style conductor sizing with temperature and conduit-fill derating, and the breaker to match. • Battery Cables & Fuses — DC cable size, fuse rating and interrupt rating for battery banks. READ THE SITE • Sun Path & Tilt — a watch-face dial of the sun's path for any day, sunrise and sunset, and the best tilt for year-round, summer or winter production. • Measure Tilt & Azimuth — lay the phone on a panel to read its angle and the direction it faces, with roof pitch in twelfths. • Shade & Obstructions — mark a tree or chimney with the camera to get its height and see exactly when it shades the array. • Roof & Ground Plane — capture a roof's tilt, facing and size with the camera. • Built-in NASA climate data for most of the world, so production estimates use real monthly sunlight and temperatures for the site. ESTIMATE THE PAYBACK • Production & ROI — monthly and annual kWh, savings and payback, shown as an honest range rather than a single hopeful number. • Over the system's life — panel degradation, rising electricity prices and an optional inverter replacement, with lifetime output and cost per kWh. • Off-Grid Sizing — appliance loads, days of autonomy, battery bank, worst-month array size and inverter surge. • Charge Controller — MPPT or PWM sizing with cold-weather voltage checks. ON THE JOB • Conduit & Cable Run — walk the route with the camera and send the length straight to Voltage Drop. • Working Space — check the clearance in front of an inverter or panelboard against NEC 110.26. • Projects — enter the site and equipment once and every calculator uses them. Duplicate a project to compare two designs. • PDF reports — share a clear report with code checks, estimates and assumptions. • Equipment library — save your panels, inverters and batteries, and share whole projects with a colleague by AirDrop. BUILT FOR THE FIELD • Works completely offline. • Imperial or metric units. • A high-contrast sunlight mode for bright days on the roof. • Designed for iPhone and iPad. Camera measuring is sharpest on iPhone Pro and iPad Pro models with LiDAR, and every camera tool also accepts typed measurements. FREE AND PREMIUM String Sizing and Sun Path & Tilt are free. A one-time Premium purchase unlocks every other tool — no subscription. Sun Sizer Pro is a design aid. Always confirm your results against the equipment manufacturer's specifications and your local electrical code before installing.