Pool Charm — Free Pool Chemical Calculator & Pool Care Guide
Pool Charm is a free pool chemical calculator and pool care guide —
the pool guy in your pocket. Enter your pool test results and pool
size, and you get a clear, step-by-step treatment plan. No account
needed, and it works offline.
The calculator gives you exact dosing instructions for:
- Chlorine — free chlorine and shock
- pH
- Total alkalinity
- Stabilizer / cyanuric acid (CYA)
- Calcium hardness
- Salt (saltwater pools)
- Green pool & algae cleanup
It also includes The Spellbook: a nine-chapter, plain-English pool
care guide that explains pool water chemistry, filtration, algae,
stains, and salt systems in language anyone can follow.
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