Still Water: Pool Log
Chlorine & pH Test Tracker
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Test your pool, log it in seconds, and get exactly how much chlorine or acid to add. Track every reading. Never guess your water chemistry again.
Still Water is the simplest way to keep your pool or hot tub perfectly balanced.
Dip a test strip, tap what you see, and Still Water instantly tells you what to add — the exact amount of chlorine, pH up or down, alkalinity, or stabilizer for your pool's size. No chemistry degree, no guessing, no spreadsheets.
WHY POOL OWNERS LOVE IT
• Log a full water test in seconds — tap the colors that match your strip
• Get clear dosing guidance: exactly how much of each chemical to add
• See every reading over time so you can spot trends before they become problems
• Reminders so you never forget to test
• Beautiful, calm design that respects your time
BUILT FOR REAL POOLS
The six pads match the real test-strip colors you already use: Free Chlorine, Total Chlorine, pH, Total Alkalinity, Stabilizer (Cyanuric Acid), and Total Hardness. Dosing is calculated for your pool's actual gallons.
FREE TO START
Track one pool with today's reading and full dosing guidance, free forever.
STILL WATER PRO
Unlock everything:
• Multiple pools and hot tubs
• Your complete testing history
• Unlimited reminders
• iCloud sync across all your devices
Choose a one-time purchase or a low yearly price — your call.
PRIVATE BY DESIGN
Your data lives on your device and your own private iCloud. No accounts to create, nothing sold, nobody watching your water.
Test smarter. Swim happier.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://eastbayprojects.com/stillwater/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Nate McGuire, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nate McGuire
- Size
- 863.2 KB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Still Water Pro (Yearly) $4.99
- Still Water Pro (Lifetime) $9.99
- Copyright
- © 2026 East Bay Projects