See the chemistry story
Track chlorine, pH, alkalinity, calcium, CYA, and filter pressure over time.
Clear water. Clear decisions.
Know what your pool needs before you add a thing.
PoolNerd turns chemistry readings, weather, and pool details into one straightforward record of your water.
Start your 14-day free trialNo credit card required.
PoolNerd
Your pool's memory.
Everything in context
Less guesswork at the water's edge.
Put weather in the picture
Understand how heat, rain, and freezing conditions relate to your readings.
Keep a dependable record
Store service notes and readings together, with CSV import and export when needed.
Work from your actual pool
Configure shape, dimensions, depth, equipment, and location for useful context.
Dive in
Give your pool a smarter history.
Start with 14 days free. Your Microsoft account keeps your pool data private and available across your devices.