Simple Pool vs Pool Math Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Pool
This app helps you precisely test, dose, and track your pool and spa water chemistry. It offers practical dosing recommendations and tools to simplify routine maintenance for various pool types. Get accurate chemical calculations without ongoing fees.
- Water test logging
- Dosing recommendations
- Chemical tracking
- LSI/CSI monitoring
- Shock treatment mode
- Test reminders
- Chemical effects preview
Read full descriptionHide full description
Unlock crystal-clear pool water with Simple Pool - the pool chemistry calculator with no subscription, ever. One purchase, lifetime access. Simple Pool helps you test, dose, and track your pool water chemistry with precision. Get CYA-aware sanitizer targets, practical dosing recommendations, and powerful tools that make routine pool maintenance faster and easier. Whether you manage a chlorine pool, saltwater pool, bromine pool, or hot tub and spa, Simple Pool gives you accurate chemical calculations - including algae treatment dosing - every time. No more overspending at the pool store - just enter your test results and get exactly what your pool needs. What you can do: • Keep a chemical log of every addition with the unified Activity History • Log full water tests or Quick Tests in seconds • Built-in LSI calculator tracks the Langelier Saturation Index (LSI/CSI) to prevent scale and corrosion • Get dosing recommendations for chlorine, acid, total alkalinity, calcium hardness, stabilizer, and more • Set your exact chlorine concentration and acid strength for precise dosing • Use Shock Treatment mode (chlorine/saltwater pools) with progress tracking • Set recurring test reminders and shock retest reminders • Use the Chemical Effects Calculator to preview chemical changes before dosing • Track trends and test history over time with interactive charts • Haptic feedback confirms pool status at a glance • Support for chlorine, saltwater, and bromine pools • Keep visual track of how your pool is doing over time by snapping a photo during water testing • Share your pool's progress by tapping the share icon on your water test details Simple Pool Pro (one-time purchase, no subscription): • One-time purchase - no subscription, no recurring fees • Unlimited pools and spas • Full test and activity history • 90-day and all-time trend ranges • iCloud sync across Apple devices Free includes: • 1 pool • Test logging and dosing recommendations • 7-day and 30-day trends • 30 days of history Spend less time managing pool chemicals and more time enjoying your pool. Download Simple Pool and make pool care simple. Links: • Privacy Policy: https://sites.google.com/view/simple-pool-privacy-policy/home • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Pool Math Calculator
This app simplifies pool water chemistry by calculating precise chemical dosages for balanced water. It helps estimate the impact of adding various chemicals and determines pool volume from basic measurements. Designed for practical, everyday pool maintenance, it keeps essential information readily accessible.
- Chemical dosing calculations
- Water balance targets
- Chemical addition effect estimation
- Pool volume calculation
- Pool settings tracking
- CSI target checks
Read full descriptionHide full description
Pool Calculator helps you keep pool water balanced without guesswork. Use it to calculate chemical dosing, check water balance targets, estimate the effect of adding a chemical, and calculate pool volume from basic dimensions. The app is built for day-to-day pool care and keeps the most important numbers easy to read. What you can do: - Calculate dosing for free chlorine, pH, alkalinity, calcium hardness, stabilizer, borates, and salt - See suggested free chlorine targets based on CYA - Estimate the effect of adding bleach, acid, borax, washing soda, salt, and other common pool chemicals - Calculate pool volume for rectangular, round, and oval pools - Track pool-specific settings like volume, temperature, units, and surface type - Check CSI targets for better water balance decisions Pool Calculator is designed to stay fast, practical, and easy to use whether you are managing your own backyard pool or checking numbers before treatment.
Screenshots
Verdict
The clearest difference is update cadence: Simple Pool at every 6 days against Pool Math Calculator's every 2 months. Pool Math Calculator's advantage is monetization model (free vs free with in-app purchases). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Simple Pool sells 1 one-off in-app purchase and Pool Math Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for Simple Pool against 4.8 for Pool Math Calculator. Both are backed by a comparable volume of ratings — 19 and 43 respectively.
Simple Pool ships an update every 6 days, Pool Math Calculator every 2 months. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.
| Parameter | Simple Pool | Pool Math Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (19 ratings) — better | 4.8 (43 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 19 | 43 — better |
| Update frequency | Every 6 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 24 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Grey Park, LLC | Sergii Nesterenko |
Customer experience
Simple Pool
Pool Math Calculator
In-app purchases
Simple Pool
- SimplePool - Lifetime$9.99
Pool Math Calculator
- Unlock Pro$12.99
Questions
Is Simple Pool free?
Is Pool Math Calculator free?
Which has better reviews, Simple Pool or Pool Math Calculator?
Do Simple Pool or Pool Math Calculator have ads?
Which is updated more often, Simple Pool or Pool Math Calculator?
Other comparisons















