# Basinly: Pool & Spa Water Care — Know what your water needs

> Know what your water needs (iPhone/iPad app by Pristn Technologies LLC.)

- Source: https://appshunter.io/ios/app/basinly-pool-and-spa-water-care/id6799775611 (this page in markdown: same URL + `.md`)
- Developer: [Pristn Technologies LLC](https://appshunter.io/developer/6780124788)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 16.4 · 80 MB
- Languages: American English, French (France), Japanese, Korean, European Portuguese, European Spanish
- Released: 2026-09-03
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/basinly-pool-and-spa-water-care/id6799775611/reviews.md

## What is Basinly?

Basinly is the pool and spa companion that turns every water test into something you can act on. Log a test, and one simple number, the stability score, tells you at a glance whether to treat the water or leave it alone.

Built for chlorine pools, saltwater pools and hot tubs, indoors or out.

STABILITY SCORE
- One score from 0 to 100 that reads how steady your water is, built from every default parameter you test
- See exactly what is dragging it down and what to fix first
- A water balance (LSI) read on the side, so you know whether the water is scaling or corrosive
- Watch it climb as your water settles in

LOG TESTS IN SECONDS
- Free chlorine, pH, alkalinity, stabilizer (CYA), calcium hardness, salt, bromine and water temperature, from strips or a drop kit
- A fast keypad and one step per parameter; skip anything you did not measure
- Target ranges from industry guidance for chlorine pools, saltwater pools and hot tubs, every one of them editable
- Add your own custom parameters, or turn off the ones you never test

DOSING YOU CAN ACTUALLY FOLLOW
- Exact amounts sized to your water body's volume, aimed at the middle of the band, never the top
- Steps in a safe order, with wait and retest steps in between, so two chemicals never meet
- Chlorine targets that can follow your stabilizer reading in CYA-aware mode
- Log the treatment and the dose lands as a marker on the chart it moved

CHARTS THAT MAKE SENSE
- Every parameter trended over time against its target band, with your time in target
- Dose markers on the line, so cause sits right next to effect
- Spot drift early, before the water turns

STAY ON SCHEDULE
- Brushing, backwashing, filter changes and anything else, as recurring reminders with a date and a time
- Dosing follow-ups when a retest is due, and a nudge when a test is overdue
- Chemical stock that deducts itself when you log a dose, so you know before you run out mid-treatment

SEASON BY SEASON
- Opening and closing checklists, step by step, timed to your hemisphere
- Indoor pools get no sun, so Basinly starts them with the stabilizer target off; pools open all year skip the opening and closing ritual
- Photo notes for a stain, a gauge or cloudy water, worth more than a paragraph later

YOURS, EVERYWHERE
- Works offline at the pool and syncs on its own when you are back online
- Your whole history on every device
- Gallons or liters, Fahrenheit or Celsius, and six languages
- Export everything as CSV, any time

PERFECT FOR
- New owners who want to be told what to add, how much, and when
- Experienced owners who want clean data and clear trends
- Anyone tired of spreadsheets and a shoebox of test strips

Basinly is free to start, and dosing, reminders and maintenance are never behind a paywall. Basinly Pro adds unlimited pools and spas, full history with 90 day, 1 year and all time charts, and overlay charts with correlation hints. Pro is a yearly subscription with a 7 day free trial for new subscribers.

Download Basinly and know exactly what your water needs.

Terms of Use: https://www.pristntechnologies.com/en/basinly/termsofuse
Privacy Policy: https://www.pristntechnologies.com/en/basinly/privacypolicy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Basinly Pro | $20.00 | per year |



## Version history (last 1 release)

### 1.0 — 2026-09-03

No release notes.

## More apps by Pristn Technologies LLC

- [Taskeon: Shared Tasks & Chat](https://appshunter.io/ios/app/taskeon-shared-tasks-and-chat/id6780124786)
- [Recif: Reef Tank Tracker](https://appshunter.io/ios/app/recif-reef-tank-tracker/id6791485365)

All apps by Pristn Technologies LLC: https://appshunter.io/developer/6780124788

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*