The pool store’s free test
What it does well
It costs nothing, a real person reads it, you get your numbers the same day, and after a few seasons the staff know your pool and your water. Nothing here is an argument for not going.
- They sell what they diagnose. That is not a trick — it is how a store keeps the lights on. But the person reading your sample also sells the answer.
- Their hours, not your water. Saturday at ten is the store’s cadence, not your pool’s. poolcntrl sets your next test from what this one found — a few hours after a chlorine correction, about a week when nothing needs fixing.
- Every visit starts from zero. Next Saturday’s sample arrives with no memory of last Saturday’s, so the advice starts over too. poolcntrl keeps every test, dose and note against your pool.
What it leaves to you
It is a good test. It is not a system: what happens between visits, and whether last week’s dose worked, is yours to track.
Who it suits
Anyone who passes a pool store most weeks, and anyone who wants a second opinion on a strip.
The full argument, point by point →
A free ppm calculator
What it does well
Quick, free and accurate at the one thing it does: give it your volume, a product and the change you want, and it gives you an amount.
What it leaves to you
A bare calculator answers the question you bring it. Which reading to fix first, what your chlorine target should be for your stabilizer, and whether last week’s dose worked are left to you. Some free tools go further and keep a log or suggest targets — if one of those already works for you, keep using it.
Who it suits
Owners who already know their targets and keep their own records.
A pool service
What it does well
The only option where somebody else does the work — the water, and usually the brushing, skimming and equipment checks as well.
What it leaves to you
Very little, which is the point. The trade is cost. A full-service pool route is priced locally: rates vary widely between markets, it bills every month your pool is open, and opening and closing visits usually cost extra. Your own quote is the number to compare.
Who it suits
Owners who would rather pay than do it, and pools nobody has time for.
poolcntrl
What it does well
Turns your own test into an exact plan for the products you already own: what to fix first, how much, and when to test again. Pro keeps every test and dose against your pool and checks your next reading against what you added.
What it leaves to you
The testing and the pouring are still yours. It does not see your water — it works from the numbers you enter.
Who it suits
Owners who test their own water and want the answer to be the same every time. This calculator stays free forever, account or not. poolcntrl Pro — $5.99/month or $49.99/year, after your 2-week free trial.
Try the free calculator →
