--- title: "Pool-Calculator - Reviews, Revenue and Downloads in United States | Apple App Store" description: "Looking for help with calculations for your swimming pool or hot tub chemistry maintenance? The Pool Calculator does all the math for you, making chemical testing and treating your pool or hot tub a b" --- # Pool-Calculator — United States > Pool chemistry made easy! ![Pool App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/83/7c/b6/837cb602-9e05-2b63-7887-e0ab75cc5333/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png) **Developer:** [Pool and Spa Resources](https://apptail.io/developer/pool-and-spa-resources-NJHb) (United States) **Category:** Lifestyle **Rating:** 4.2/5 (630 ratings) **Price:** $4.99 **Bundle ID:** com.psiflow.poolcalculator **Store:** Apple App Store **Country:** United States **Version:** 6.0.1 (released 2025-10-06) **Original Release:** 2011-01-07 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id412876581) **AppTail Page:** [https://apptail.io/app/pool-calculator-Esad/united-states](https://apptail.io/app/pool-calculator-Esad/united-states) ## Pool Description Looking for help with calculations for your swimming pool or hot tub chemistry maintenance? The Pool Calculator does all the math for you, making chemical testing and treating your pool or hot tub a breeze. Pool Calculator is easy to use, and tells you exactly how much of each chemical to add to keep your water in balance and crystal clear. No more puzzling over complicated charts and formulas. Bring your iPhone or iPad out to the pool and have all the chemical information and calculations you need right at your fingertips. Pool Calculator works offline and online, so if you have poor internet reception by your pool, you’re still able to get test results. Pool Calculator provides a complete tool kit to make pool care easy. You get: • Chemical Calculator • Pool Volume Calculator • Chemical Effects (What-if) Calculator CHEMICAL CALCULATORS You can use whichever test strip or test kit you prefer for testing your pool or hot tub. Pool Calculator provides calculations for: - Chlorine (FCl) - Raising pH - Lowering pH - Total alkalinity (TA) - Calcium hardness (CH) - Stabilizer (CYA or cyanuric acid) - Salt - Borate (Borax) - Calcium saturation index (CSI, similar to LSI) RECOMMENDED CHEMICAL RANGES- USE OURS OR DECIDE YOUR OWN With Pool Calculator, the recommended ranges for your chemicals are based upon whether you have a pool or hot tub, and the surface material (plaster, vinyl or fiberglass) of your pool or hot tub. You can choose from several pre-defined ranges or customize based on your or your pool pro’s preferences. POOL VOLUME CALCULATOR To keep your swimming pool or hot tub at its best, it’s important that you accurately calculate your water volume. All of the chemical balancing recommendations you receive from the Pool Calculator are based on it. You can calculate the volume of your pool in metric units (liters) or in imperial units (gallons). The Pool Volume Calculator can be used for: • Rectangular Pools and Hot Tubs • Oval Pools and Hot Tubs • Round Pools and Hot Tubs CHEMICAL EFFECTS CALCULATOR “What if” analysis for adding chemicals to your pool or hot tub! Ever want to know the impact of adding a given amount of Chemical has on your swimming pool or hot tub chemistry? The Chemical Effects Calculator calculates the impact adding a specific amount of chemical has on your pool chemistry. It does this not only for the primary purpose of the chemical, but also on the other important measurements for your pool. For example, adding Trichlor not only raises your Free Chlorine, it also increases your Cyanuric Acid, lowers your pH and increases your Salt. Adding Cal Hypo raises Free Chlorine, and also raises Calcium Hardness (CH) and Salt. With the Chemical Effects Calculator, you can measure the effects on pool chemistry of adding a given dose of: • Bleach • Trichlor • Dichlor • Cal-hypo • Lithium Hypochlorite • Chlorine gas • Muriatic Acid • Dry Acid • Washing soda • Soda Ash • Borax • Sodium Tetraborate Pentahydrate • Boric Acid • Caustic Acid (lye) • Baking Soda • Calcium Chloride • Calcium Chloride dihydrate • Stabilizer • Liquid Stabilizer • Salt PoolCalculator can be used for in ground or above ground pools, spas and hot tubs, chlorine or salt pools, and a broad range of surfaces. Running into problems? Let us know at support@poolcalculator.com! ## Pool Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f8/97/21/f89721db-c621-ef99-014e-1e4602137a6e/ab56e7ff-7baf-4042-8a96-5e033ef3b3de_Pool_Calculator_Splashscreen_copy.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9f/d0/7a/9fd07aee-3536-b95c-d0b8-38fadd5c07c5/Simulator_Screenshot_-_iPhone_14_Plus_-_2025-08-29_at_15.52.30.png/1284x2778.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c7/e7/93/c7e793dd-3117-69c5-8256-da2d50fe3c8d/Simulator_Screenshot_-_iPhone_14_Plus_-_2025-08-29_at_15.52.53.png/1284x2778.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b3/57/a9/b357a923-5116-0d44-70a2-8dd4d34fb20e/Simulator_Screenshot_-_iPhone_14_Plus_-_2025-08-29_at_15.52.57.png/1284x2778.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/30/9c/65/309c65f2-4d6f-8f60-e5f6-6660f4beec7c/Simulator_Screenshot_-_iPhone_14_Plus_-_2025-08-29_at_15.53.04.png/1284x2778.png) ## Pool Rating Breakdown in United States - 5 stars: 382 (61%) - 4 stars: 123 (20%) - 3 stars: 34 (5%) - 2 stars: 18 (3%) - 1 stars: 73 (12%) ## Pool Reviews in United States ### *---- "No way to get in touch with the app’s developer" Been using the paid version of the app for years, now won’t allow to log on to my account. Tells me invalid password no matter how many times I try to reset it. Someone please correct, should really have a CONTACT US Link -- Scott 'n NJ, 2026-04-03 ### *---- "Is anyone supporting this app???" I have used poolcalculator.com for years. Loved it. Just bought this app. Doesn’t work. Just get Error: Pool failed to load OR Error: Account failed to load. Click through to app support and it takes me to the website where the is NO link to any app support. So far a waste of money. Is there an owner/developer who cares or do they just want our $5??? -- twp9, 2026-04-01 ### ***-- "Needs an update" I like the idea behind this app, but some of its calculations are off. Specifically, the muriatic acid calculation when you add borate is way off. Please fix. -- joel0507, 2026-03-01 ### *---- "Scam" Do not I mean do not give your credit card information especially from your apple wallet!!!!!! This has no contact information -- Empiremind2, 2025-08-03 ### ***** "Super useful" A pool mai te ande essential for me. -- TeresaK24, 2025-06-18 ### ***** "Great app" Has been a great teaching tool for me -- pray for upsate, 2025-04-25 ### ***-- "Don’t have the chemicals I use." Bummer. I really loved this app at first, but now I’m confused and cannot find a way to contact the company to ask for help. Doesn’t feel good to pay for an app and then not be able to get support. When using the calculator, it has certain options in a drop down menu to choose from so you know what amounts to add. But my chemicals aren’t in the list and there’s no help I can see to convert. One example: my ph up is liquid potassium carbonate. But what is on the list for raising ph is washing soda, soda ash, and borax. I google and can’t find any link between what I have and what they’re listing. So I’m stuck. Not cool. -- farbeyondme, 2024-09-05 ### ****- "App suggestion" App is great but I have a suggestion. Can you put a page in that allows us to change our tested amounts all at once without having to back in and out of each item? When I’m testing I do all my tests and then go back to read results so it’s a pain to have to constantly switch pages Otherwise the app is great! -- Ligale Finloft, 2024-07-14 ### *---- "Sad Trombone" As I recall this app used to be da bomb. But now it doesn’t work well on iPad or iPhone. Same failure scenario, can’t do a test without it crashing, or can set a parameter and then not be able to change it. Using the back button brings you to a blank page and have to force quit if you have any suggestions I’d be happy to try it, but I’ve had to resort to one of those other offerings that are simply not as user friendly (well, crashing is not user friendly but I remember when it used to work. I think it was a web app at the time ) -- xbasicx, 2024-05-04 ### **--- "DO NOT BUY!" Waste of money. Company is in Nigeria. Wonder how much experience they have with pools - and with pools in our latitude. Paid $5 for this app. - It does not allow addition of a second pool or spa even though the one added is called “first pool.” If you have two units, the size must be reentered for each one if a different one is tested next. - And there is no tracking of history. Each test is entered separately with treatment suggestions given for that one instance. No way to know what I did last week or last month. -Have two stars because it does calculate pool size and gives suggestions based on the chemicals you buy (assuming “washing soda” is the same as sodium bicarbonate or baking soda). -- AzBlestmom, 2023-11-01 [View all Pool reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Pool Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Paid | Dominican Republic | Lifestyle | #74 | | Top Paid | New Zealand | Lifestyle | #80 | | Top Paid | Philippines | Lifestyle | #85 | | Top Paid | Portugal | Lifestyle | #95 | | Top Paid | South Africa | Lifestyle | #98 | | Top Paid | Lebanon | Lifestyle | #100 | | Top Paid | Canada | Lifestyle | #121 | | Top Paid | Australia | Lifestyle | #138 | | Top Paid | Saudi Arabia | Lifestyle | #140 | | Top Paid | United Arab Emirates | Lifestyle | #144 | | Top Paid | Indonesia | Lifestyle | #146 | | Top Paid | Colombia | Lifestyle | #156 | | Top Paid | Greece | Lifestyle | #156 | | Top Paid | Thailand | Lifestyle | #162 | | Top Paid | Chile | Lifestyle | #184 | | Top Paid | Peru | Lifestyle | #184 | | Top Paid | Mexico | Lifestyle | #186 | | Top Paid | Sweden | Lifestyle | #186 | | Top Paid | Hungary | Lifestyle | #190 | | Top Paid | Israel | Lifestyle | #193 | | Top Paid | Czechia | Lifestyle | #196 | | Top Paid | Azerbaijan | Lifestyle | #197 | | Top Paid | Belgium | Lifestyle | #203 | | Top Paid | Malaysia | Lifestyle | #207 | | Top Paid | Kazakhstan | Lifestyle | #211 | | Top Paid | Ireland | Lifestyle | #212 | | Top Paid | United Kingdom | Lifestyle | #213 | | Top Paid | Kuwait | Lifestyle | #214 | | Top Paid | Denmark | Lifestyle | #214 | | Top Paid | Spain | Lifestyle | #223 | | Top Paid | Nigeria | Lifestyle | #231 | | Top Paid | Argentina | Lifestyle | #237 | | Top Paid | Singapore | Lifestyle | #240 | ## Pool Discovered Keywords - pool - calculator - the calculator - offline pool - calculator for iphone ## Apps Similar to Pool - [My Books Read](https://apptail.io/app/my-books-read-LMec/united-states) - [Pool Water Calculator](https://apptail.io/app/pool-water-calculator-ymDc/united-states) - [WaterLink Solutions PRO](https://apptail.io/app/waterlink-solutions-pro-BmDc/united-states) - [WaterLink Solutions Home](https://apptail.io/app/waterlink-solutions-home-crFc/united-states) - [Taylor® sureTREAT®](https://apptail.io/app/taylor-suretreat-gwxp/united-states) - [Pool Care by Swim University](https://apptail.io/app/pool-care-by-swim-university-HMgq/united-states) - [First Timers](https://apptail.io/app/first-timers-Dsov/united-states) - [Countdown & Days Since: Sincey](https://apptail.io/app/countdown-days-since-sincey-GcMv/united-states) - [Event Countdown: ToMoment](https://apptail.io/app/event-countdown-tomoment-joFw/united-states) - [Life Time Left: 4K Weeks](https://apptail.io/app/life-time-left-4k-weeks-UaGw/united-states) ## Pool Available In - [United States](https://apptail.io/app/pool-calculator-Esad/united-states) - [United Kingdom](https://apptail.io/app/pool-calculator-Esad/united-kingdom) - [Canada](https://apptail.io/app/pool-calculator-Esad/canada) - [Australia](https://apptail.io/app/pool-calculator-Esad/australia) - [Netherlands](https://apptail.io/app/pool-calculator-Esad/netherlands) - [Thailand](https://apptail.io/app/pool-calculator-Esad/thailand) - [New Zealand](https://apptail.io/app/pool-calculator-Esad/new-zealand) - [South Africa](https://apptail.io/app/pool-calculator-Esad/south-africa) - [Ireland](https://apptail.io/app/pool-calculator-Esad/ireland) - [Greece](https://apptail.io/app/pool-calculator-Esad/greece) - [Belgium](https://apptail.io/app/pool-calculator-Esad/belgium) - [Spain](https://apptail.io/app/pool-calculator-Esad/spain) - [Dominican Republic](https://apptail.io/app/pool-calculator-Esad/dominican-republic) - [Algeria](https://apptail.io/app/pool-calculator-Esad/algeria) - [Ecuador](https://apptail.io/app/pool-calculator-Esad/ecuador) - [Egypt](https://apptail.io/app/pool-calculator-Esad/egypt) - [Finland](https://apptail.io/app/pool-calculator-Esad/finland) - [Hong Kong SAR China](https://apptail.io/app/pool-calculator-Esad/hong-kong) - [Hungary](https://apptail.io/app/pool-calculator-Esad/hungary) - [Indonesia](https://apptail.io/app/pool-calculator-Esad/indonesia) - [Israel](https://apptail.io/app/pool-calculator-Esad/israel) - [India](https://apptail.io/app/pool-calculator-Esad/india) - [Italy](https://apptail.io/app/pool-calculator-Esad/italy) - [Japan](https://apptail.io/app/pool-calculator-Esad/japan) - [South Korea](https://apptail.io/app/pool-calculator-Esad/south-korea) - [Kuwait](https://apptail.io/app/pool-calculator-Esad/kuwait) - [Kazakhstan](https://apptail.io/app/pool-calculator-Esad/kazakhstan) - [Lebanon](https://apptail.io/app/pool-calculator-Esad/lebanon) - [Madagascar](https://apptail.io/app/pool-calculator-Esad/madagascar) - [North Macedonia](https://apptail.io/app/pool-calculator-Esad/north-macedonia) - [Mexico](https://apptail.io/app/pool-calculator-Esad/mexico) - [Malaysia](https://apptail.io/app/pool-calculator-Esad/malaysia) - [Nigeria](https://apptail.io/app/pool-calculator-Esad/nigeria) - [Norway](https://apptail.io/app/pool-calculator-Esad/norway) - [Oman](https://apptail.io/app/pool-calculator-Esad/oman) - [Peru](https://apptail.io/app/pool-calculator-Esad/peru) - [Philippines](https://apptail.io/app/pool-calculator-Esad/philippines) - [Pakistan](https://apptail.io/app/pool-calculator-Esad/pakistan) - [Portugal](https://apptail.io/app/pool-calculator-Esad/portugal) - [Paraguay](https://apptail.io/app/pool-calculator-Esad/paraguay) - [Romania](https://apptail.io/app/pool-calculator-Esad/romania) - [Russia](https://apptail.io/app/pool-calculator-Esad/russia) - [Saudi Arabia](https://apptail.io/app/pool-calculator-Esad/saudi-arabia) - [Singapore](https://apptail.io/app/pool-calculator-Esad/singapore) - [United Arab Emirates](https://apptail.io/app/pool-calculator-Esad/united-arab-emirates) - [Türkiye](https://apptail.io/app/pool-calculator-Esad/turkey) - [Taiwan](https://apptail.io/app/pool-calculator-Esad/taiwan) - [Ukraine](https://apptail.io/app/pool-calculator-Esad/ukraine) - [Vietnam](https://apptail.io/app/pool-calculator-Esad/vietnam) - [Slovenia](https://apptail.io/app/pool-calculator-Esad/slovenia) - [Argentina](https://apptail.io/app/pool-calculator-Esad/argentina) - [Azerbaijan](https://apptail.io/app/pool-calculator-Esad/azerbaijan) - [Brazil](https://apptail.io/app/pool-calculator-Esad/brazil) - [Belarus](https://apptail.io/app/pool-calculator-Esad/belarus) - [Belize](https://apptail.io/app/pool-calculator-Esad/belize) - [Switzerland](https://apptail.io/app/pool-calculator-Esad/switzerland) - [Chile](https://apptail.io/app/pool-calculator-Esad/chile) - [China](https://apptail.io/app/pool-calculator-Esad/china) - [Colombia](https://apptail.io/app/pool-calculator-Esad/colombia) - [Cyprus](https://apptail.io/app/pool-calculator-Esad/cyprus) - [Germany](https://apptail.io/app/pool-calculator-Esad/germany) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*