PoolFu - Pool & Spa Chemistry

PoolFu - Pool & Spa Chemistry

Chemical Dosing Calculator

4 ratings
5 reviews
Free
In-App Purchases

Details

Released
March 17, 2026
Updated
October 1, 2026

Features

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PoolFu - Pool & Spa Chemistry screenshot #10 for iPhone
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About

This app provides comprehensive pool and spa water chemistry analysis and dosing recommendations. It considers multiple factors like equipment, weather, and history for safe and clear water. Features include safety guidance, smart dosing, and a health score.

✓Dosing calculator
✓Water safety guidance
✓Health score
✓Spa-specific chemistry
✓Saltwater generator support
✓Weather-aware recommendations
✓Offline functionality
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What's New in PoolFu

1.1.1

October 1, 2026

What's new in PoolFu Override ranges - Set your own total alkalinity and calcium hardness ranges in Edit Pool or Edit Spa, such as the ranges in your hot tub's manual - Salt pools with a salt cell that isn't listed in PoolFu can set a salt range too - Reading colors, treatments, the Health Score, charts, share cards, and Splash all follow your ranges - Safety limits stay fixed, so acid still waits until alkalinity is high enough to work safely - Each reading now shows the same color on every screen More accurate chemical dosing - Muriatic acid doses now account for alkalinity, stabilizer, borates, and water temperature - Calcium hardness recommendations now include amounts for both calcium chloride flakes and pellets - Vinyl pools use a moderate 220 ppm target for optional calcium adjustments at normal water temperatures - Champion AcidBlue Low-Fume Muriatic Acid is now available in the US, with doses calibrated for that product Safer treatment timing - When alkalinity needs correcting first, pH treatment now tells you to wait and retest instead of showing Mark as Applied - Recommended treatments now let you record the amount you actually added when it differs from PoolFu's suggestion - PoolFu remembers recently logged baking soda and recognizes the expected alkalinity increase on your next test Splash uses PoolFu's doses - We've had to give Splash a good talking to, and sent him to pool university. - Splash now talks like a pool pro, with clearer and more complete answers - When your last test is more than a week old, Splash asks you to test again before recommending a treatment - Splash now gives chemical amounts only when they come from PoolFu's treatment plan - Requests for ounces, grams, milliliters, and other supported units use the exact amount calculated by the app Fixes and improvements - A removed saltwater generator model no longer comes back after saving - Stability improvements

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Subscriptions & In-App Purchases

Annual

Annual Subcription to the PoolFu app

$53.991 Year
14 Days trial
How to cancel PoolFu subscription ⁉️

User reviews

Excellent accuracy

Just a great app all around really. I use this for my pool and it’s incredibly accurate and I love the recommendations. It’s nice how it tells you what to do first this is something that’s always stumped me when I’m dealing with multiple things.

Response from developer

Thank you for the kind words and 5-star review. We hope you are still enjoying using the app!

Awesome app!

PoolFu helps enormously with my pool maintenance, and I love that it actually explains the why behind everything. Thank you for making it so good!

Gamechanger

I just switched from another pool calculator app. First big difference I see is the UI is designed really well. I use Poolfu for both my pool and hot tub, and the recommendations are on point. It took me a little getting used to, but so far I’m very happy with this app.

Great Spa Testing App!

This app has been amazing and has exceeded my expectations. I use it when testing my hot tub, I log the results and follow the guidance. It tells me exactly what’s required and how to balance the water correctly. So easy to use and follow, and it’s great having all of the spa information and test history in one place. The achievements awarded in the app are fun too, thanks Splash! ;)
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Incredibly easy to use, very impressive

I’ve been using this for about a week now and I’m absolutely blown away by it so far. It seems to get every treatment recommendation spot on. Well, worth the subscription.

Response from developer

Thank you for the kind words and 5-star review. We hope you are still enjoying using the app!

Developer apps

FAQ

What is the free trial period for PoolFu?

Every new account includes a 14-day free trial for the standard PoolFu subscription. You can cancel anytime during the trial period. Pro subscriptions do not offer a trial.

Does PoolFu have ads?

No, PoolFu is ad-free. The app states it has no ads and no chemical company sponsors, focusing solely on providing accurate recommendations based on water chemistry.

What devices does PoolFu support?

PoolFu is available for iPhone and iPad devices. It also keeps your pools, spas, tests, and history synced across devices.

How often is PoolFu updated?

The latest version of PoolFu is 1.0.7, and it was last updated on June 3, 2026. This indicates a recent update, suggesting ongoing development and support.

What is the age rating for PoolFu?

PoolFu has an age rating of 4+. This means it is considered suitable for children aged 4 and above, with no mature content concerns.

Can PoolFu be used offline?

Yes, PoolFu works offline when you need it. This feature ensures you can access its water chemistry analysis and recommendations even without an internet connection.

What languages does PoolFu support?

PoolFu is a multi-lingual application, supporting English, Spanish, Portuguese, German, Italian, French, Chinese (Simplified and Traditional), and Japanese.

How does PoolFu calculate water safety?

PoolFu determines water safety by analyzing your pool or spa's readings, equipment, surface, weather, and history. It provides clear recommendations on whether the water is safe to use, requires caution, or should remain closed.