Know exactly what your water needs.
Basinly turns every pool and hot tub test into one score you can trust, and when something is off, tells you what to add, how much for your volume, and in what order.
2 parameters are outside target. Start with chlorine, then retest in about six hours.
Last test earlier today · 4 parameters
The test is easy. Knowing what to do is not.
A strip tells you chlorine sits at 1.6 and alkalinity at 60. It does not tell you what that means, what to add first, or how much your particular pool needs. Basinly does that arithmetic: one score for the whole picture, and a treatment plan sized to your water, in a safe order, with the wait times between steps.
One number that says act, or leave it alone.
Every test rolls into a single 0 to 100 score. The further a reading sits outside its target band, the more points it costs, and critical readings cost the most. Tap the ring in the app and the breakdown shows exactly what is dragging the score down and what is holding steady.
- Every default parameter you test counts, from chlorine to calcium hardness
- A chlorine pool, a saltwater pool and a hot tub each get their own target bands
- A nudge when the score starts falling, and again when it recovers
Free chlorine is the main drag on your score right now.
Dragging it down
- Free chlorine0.4 low
- pH0.1 high
Holding steady
- Total alkalinityheld
- Stabilizer (CYA)held
Everything between the test and the swim.
Log a test in about two minutes
Strips or a drop kit both work. Basinly steps through your parameters one at a time — skip what you did not measure, and add custom parameters for anything else you test.
Dosing you can actually follow
Exact amounts for your volume, in the right order, with wait-and-retest steps instead of a wall of chemistry.
Stock that counts itself down
Tell Basinly what is in the shed and every logged dose is deducted automatically, so it can warn you before you run out mid-treatment.
Reminders and photo notes
Recurring nudges for brushing, backwashing and filter changes, plus photo notes for the stain you will want to describe later.
Opens and closes with the season
Opening and closing checklists that follow your calendar in either hemisphere, with water-temperature hints for the right moment. Indoor pools switch to year-round mode.
Works at the pool, syncs at home
Local-first: every test saves to your phone instantly, with or without signal, then syncs across your devices. Export everything to CSV any time.
3.2ppm
Thu, Aug 13 · Backyard Pool
Chemical additions
See what moved the water.
Every parameter is charted against its own target band, and every dose you log lands as a marker on the chart it moved, so cause sits right next to effect. Seven and thirty day views are free; Basinly Pro opens 90 days, a year and all time, plus overlay charts with correlation hints.
- Your target band shaded behind every chart
- Chemical additions marked right on the line
- Time in target tallied for every window
Know what your water needs.
Basinly is coming to the App Store and Google Play. The free plan covers one pool or spa with 7 and 30 day charts; Basinly Pro adds unlimited water bodies and your full history.
Need help with Basinly?
Questions, feedback, or trouble with the app? Write to us and a human will answer.
or email us at contact@pristntechnologies.com