# Pool-Calculator — user reviews > 101 indexed App Store user reviews of Pool by Pool and Spa Resources, LLC, rated 4.20/5 from 629 ratings. - Source: https://appshunter.io/ios/app/pool-calculator/id412876581/reviews - App overview in markdown: https://appshunter.io/ios/app/pool-calculator/id412876581.md - Rating breakdown: 5★ 382 · 4★ 123 · 3★ 34 · 2★ 18 · 1★ 72 ## What do users think of Pool? Overall sentiment: neutral **Pros** - 💡 Useful pool chemistry calculator - 🚀 Makes pool maintenance easy - 👍 Provides chemical dosage recommendations - 🔍 Helpful 'Effects' tool to understand chemical impacts **Cons** - 🐛 Accuracy issues with certain chemical calculations - 🔍 Confusing or outdated chemical names - 🔍 Limited customization options - 🐛 Crashes and compatibility issues with newer iOS versions **Commonly reported bugs** - App crashes on launch for many users - Keyboard issues preventing data entry - Incorrect chemical effect information (e.g. soda ash) - Volume calculation not updating properly **Most requested features** - Ability to save and track test history - Support for multiple pools/spas - Metric-only unit support - More detailed chemical dosage information (e.g. weight-based) ## Newest reviews (16 of 101) ### 3/5 — Don’t have the chemicals I use. *2024-09-05* 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. ### 4/5 — App suggestion *2024-07-14* 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! ### 2/5 — DO NOT BUY! *2023-11-01* 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). ### 3/5 — Data entry *2023-07-04* After entering data for FC I select done; it reveal a ; it takes me to the main data screen then show no data has been entered. Unless you enter 1-5 it doesn’t save the information you entered it instead shows invalid number entered error. I wish my free Chlorine was between 1 to 5 ppm but it’s not. ### 2/5 — Water temperature missing *2023-06-24, version 5.0.1* Are use this for a few years now, and I’d give it five stars however, this new version has deleted water temperature setting which affects balancing of chemicals. ### 3/5 — Update Bleach Percentage *2023-06-15, version 5.0.1* The only gripe I have is that it doesn’t have the new 7.5% Clorox Disinfecting Bleach as an option in the “Effects” tab. If this gets updated it’s an easy 5 Star App. ### 4/5 — Covers All Bases *2023-04-19, version 5.0.1* The App is great. It also me to use alternative chemistry in my pool. I don’t have to buy chemicals from a “pool” store. I mostly shop the grocery store and the local big box stores. ### 2/5 — Update is not good *2023-03-26, version 5.0.0* All my old data got erased and the new app update simply does not work. I’m super disappointed. ### 3/5 — The app used to be a 5 star app *2023-03-07* Since the recent updates the app has become harder to use, and they have taken away from the app the most important reading for pool pros - the “Borate” testing option is no longer available on the app.. but is on the website? Does not make sense. There is also no contact form on the website, and app support takes you to the same website where there is no contact option. New look is not appealing or helpful in any way. Revert the app back to the way it was. **Developer response:** Hello TXHPS, We just updated the app and hopefully this addressed your issues. We fixed the issues related to the recent release and Borate is now in the app. Please email us at support@poolcalculator.com if you are still having issues. ### 3/5 — Great App. Highly recommended. New Version Buggy *2023-01-26* Use the app almost everyday for the maintenance of my hot tub. Latest version has introduced some bugs. Effects does not work and test not blocks goals above a certain range (like FC over 12) Please fix. ### 4/5 — Pretty good app just needs one improvement *2023-01-15* The only issue I have with the app is when I am calculating how much dry acid to use to lower the pH it only returns a ml by volume result rather than kg’s. The web based version of the calculator does provide this so I use the web based version instead now. If you can update the app with this functionality then I’ll give it 5 stars. ### 1/5 — don’t bother *2022-11-09* use a free one ### 2/5 — Buggy *2022-09-06* Certain calculator values do not work. For example Chlorine required. There also seems to be an issue with ph increaser type. ### 1/5 — Doesn’t work *2022-06-10, version 4.2.0* Enter required info, FC is at zero in pool and apps provides no suggestion and doesn’t allow input for what type of chlorine being utilized ### 2/5 — Not consistent with browser version *2022-05-08* Not consistent with browser version. This app doesn’t have the ability to save readings. Wasted 5.00. You can pay 9.99 a year for this ability on web version which is a lot. Web version links to app. Assumed they would have same functionality and this was a one time purchase. Save your money. ### 4/5 — It make life easier *2022-04-26, version 4.2.0* My pool is 15,000 gallons. All of the tables do not have a column for that size pool. This just allows me to avoid a stupid simple math mistake. ## Most critical reviews (10 lowest-rated) ### 1/5 — Scam *2025-08-03, version 5.0.1* Do not I mean do not give your credit card information especially from your apple wallet!!!!!! This has no contact information ### 1/5 — Sad Trombone *2024-05-04* 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 ) ### 1/5 — Fair but lots of room for improvement *2023-07-26, version 5.0.1* I am not sure how this app beats a piece of paper. I use an Excel spreadsheet to track my testing results and chemicals to be added to the pool. My objective is to develop charts to show the apparent interaction over time between chemical changes Ph, Cl, ALK etc. This app doesn’t appear to keep any records to compare one week vs the next. So I ask, why not us s piece of paper. This is junk. ### 1/5 — Not very good *2023-04-15* The online version is better. I’d like a refund please. The app has a slow reaction time, does not store or chart results of tests. Critically the app does not give recommended dose amounts by weight unlike the online calculator. ### 1/5 — Update Broke the Calculator *2023-03-13, version 5.0.0* After the recent update, it seems impossible to update the volume calculation. The keyboard hides any of the other tabs at the bottom and there’s no way to dismiss the keyboard. ### 1/5 — Worthless *2023-02-25, version 5.0.0* I paid for it and I get nothing a blank screen. Worthless app ### 1/5 — Latest update made app useless *2023-01-28, version 5.0.0* Loved this app until the recent update. Virtually nothing works with it. Horrible! Had to go find another app. ### 1/5 — It stopped working with recent update. *2023-01-20, version 5.0.0* I’ve been using this calculator for a couple years to quickly determine how much chemicals to add to my hot tub. Since the recent update it’s just a blank screen that says “pool ready”. ¯\_(ツ)_/¯ I guess I’ll go find another app. ### 1/5 — Done button when editing number broken *2023-01-17, version 5.0.0* The keyboard doesn’t collapse when hitting done ### 1/5 — Latest upgrade broke everything *2023-01-08* I e used this app for a few years now and it was great at calculating chemical additions to keep everything in balance. I never used an online account and have no need to track multiple pools- I’m a homeowner not a pool maintenance company. Today after the latest upgrade my pool is gone and my chemistry is gone and it will not let me re-enter my pool volume without creating an online account. **Developer response:** Hello sjk6574, We just updated the app and hopefully this addressed your issues. We apologize for any inconvenience this caused you. Please email us at support@poolcalculator.com if you are still having issues. ## Most praised reviews (10 highest-rated) ### 5/5 — Super useful *2025-06-18, version 5.0.1* A pool mai te ande essential for me. ### 5/5 — Great app *2025-04-25, version 5.0.1* Has been a great teaching tool for me ### 5/5 — Works Well and now saves settings *2023-11-17* The app did the job for me. Pool type volume etc are saved and loaded each time I restart the app. Would be good to be able to enable/display and disable/hide the chemical settings that are not of interest. Also name them at full name rather than the abbreviation I.e Total Alkalinity rather than TA. It works well and now saves the settings from one session to the next even across devices if you create an account. Thanks for a very useful app. ### 5/5 — Lifesaver *2023-09-27* Moved to the country and built a pool. No one wants to come out and service it because the round trip is too long. This has been an incredible tool. First time pool owner. I have a sparkling blue pool all summer long!! Highly recommend!!! ### 5/5 — Amazing App! *2021-06-30, version 4.2.0* Makes balance in pool chemistry look easy ### 5/5 — Great App. *2020-10-31, version 3.0.1* Love this app. It’s so easy to keep track of your pool readings. ### 5/5 — Best Available but Desperately Meeds Multi Pool Support! *2020-09-19, version 3.0.1* I love this app and use it daily but it needs two things to be perfect: 1: multi spa and/or pool support. I have a pool and hot tub and in order to change between the two I have to re-enter the volume settings each time 2: there’s a strange bug to where if you enter an invalid character in the amount box you get an “NaN” error and you have to restart Besides these two gripes I highly recommend this app to any pool or hot tub owner! ### 5/5 — Finally crystal clear water!! *2020-06-09* Love this app! This app coupled with the HTH 6-way test kit (liquid set - not the paper strips which expire) tells me exactly how much of what chemical to add to get my pool balanced. I struggled for months with info from the Internet until I found the pool calculator website and downloaded the app. Just plug in the results from the test kit and follow the advice from the app. Works perfectly for us. This is the best $5 I have spent all year! Thank you for helping me make our pool beautiful to swim in! ### 5/5 — The App works as advertised *2020-06-08, version 3.0.1* My mistake. The app is fine. ### 5/5 — Very helpful *2020-05-05, version 3.0.1* Very helpful app! I use it all the time! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*