Pool-Calculator Downloads & RevenuePool-Calculator · App Store
Pool-Calculator is #125 in Lifestyle Paid in Canada and charting in 8 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
Full timeline · 14 events in the last 12 months
- 📈Pool-Calculator hit #1Top Paid · Lifestyle · PH
- 📈Pool-Calculator charting in a new countryUnited Kingdom
- 📈Pool-Calculator entered the top 100Top Paid · Lifestyle · CA
- 📈Pool-Calculator entered the top 100Top Paid · Lifestyle · ZA
- 📈Pool-Calculator charting in a new countrySouth Africa
- 📈Pool-Calculator charting in a new country in 2 chartsColombia · Philippines
- 📈Pool-Calculator entered the top 100Top Paid · Lifestyle · PH
- 📈Pool-Calculator charting in a new country in 4 chartsAustralia · Canada · Indonesia · Mexico
- 🆕Pool-Calculator first spotted by AppInsider#74 in Top Paid · Lifestyle · United States
- 🆕Pool-Calculator released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Pool-Calculator at a glance
AI summary written from our chart and store data, 2026-10-24. It can be wrong: check the numbers above.
A paid utility for pool and spa owners that calculates chemical dosages, water volume, and the secondary effects of additives to maintain balanced water chemistry. The app holds the #1 position in the Philippines Lifestyle Paid charts, with lower rankings in Australia (#131) and Sweden (#188), indicating strong regional dominance in Southeast Asia.
Similar apps: PoolMath, SwimCloud, Pool Care Pro
Pool-Calculator on the App Store
App details
Pool-Calculator downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| LifestylePaid | #125 | |
| LifestylePaid | #142 | |
| LifestylePaid | #142 | |
| LifestylePaid | #84 | |
| LifestylePaid | #165 | |
| LifestylePaid | #101 | |
| LifestylePaid | #185 | |
| LifestylePaid | #159 |
Apps near Pool-Calculator on the chart
Lifestyle Paid, around #125.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Pool-Calculator
From the 50 most recent App Store reviews in the US.
Users report that recent updates have broken core functionality, causing the app to crash on launch or display blank screens on iOS devices. There is widespread frustration regarding inaccurate chemical calculations and a complete lack of accessible customer support for paid users.
Mostly negative (16% of recent reviews give 4–5 stars). People like it for being easy to use, and its features and content. The main complaints are about crashes and bugs, and recent updates. Recent reviews are more positive than earlier ones.
What people like
- Ease of use: “Makes balance in pool chemistry look easy”
- Features & content: “This has been an incredible tool”
- Useful
Common complaints
- Crashes & bugs: “Crashed every single time”
- Updates: “Update Broke the Calculator”
- Price & subscription: “Refund has been requested”
- Login & account: “Error: Account failed to load”
About Pool-Calculator
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
• Bor
Latest updates
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