Pool Chemical LogBook
Track pool chemistry
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Track pool chemistry with ease. Instant LSI, chemical corrections, and inspector-ready PDF reports.
Built for commercial pools.
Pool Chemical Logbook is the professional logbook & calculator for hotels, HOAs, apartments, health clubs, and facilities —and it works great for homes, too. Record daily chemistry, see LSI instantly, compute exact product-based doses, and export inspector-ready monthly PDF logbooks. The app runs offline on-site and syncs to the cloud when you’re back online.
Why operators choose it:
- Code-friendly monthly logbook:
Clear, inspector-ready PDF reports many cities expect you to keep on file.
- Owner → Member Collaboration:
Invite staff or team members to share a property with clear roles. Owners can delegate read-only or editing rights, switch between Owner and Member views, and keep all pools & spas under one shared cloud logbook.
- Graph Readings & Trends:
Visualize your chemistry history with clear, color-coded graphs for pH, chlorine, alkalinity, temperature, and more—making it easy to spot changes before they become problems.
- Code-friendly monthly logbook:
Clear, inspector-ready PDF reports that many cities expect you to keep on file.
- Offline-first:
Keep logging and editing with no internet; your data syncs automatically when service returns.
- Commercial focus:
Multiple pools/spas per property, fast entry, initials/notes, and correction workflows.
- Exact dosing, fewer callbacks:
Product-aware math shows side-effects (e.g., dichlor adds CYA, cal-hypo adds CH) so you don’t over-correct.
What you can do:
1- Log pools & spas fast
pH, Free/Combined Chlorine (FC/CC), Total Alkalinity (TA), Calcium Hardness (CH), Stabilizer/CYA, TDS, Temperature, Flow, and Filter PSI.
2- See LSI live
Color-coded Langelier Saturation Index with a pointer—spot corrosive/balanced/scale-forming water at a glance.
3- Calculate precise chemical doses
- Raise FC: Liquid chlorine 12.5%, Cal-Hypo 67%, Dichlor 56%, Trichlor 90%
- Lower/neutralize FC: Sodium thiosulfate, Sodium sulfite
- Raise TA: Sodium bicarbonate, Soda ash, Sodium sesquicarbonate
- Lower TA / pH: Muriatic acid 31.45%, Sodium bisulfate
- Raise CH: Calcium chloride 100% / 77%
- Raise CYA: Cyanuric acid
Each option shows realistic side-effects and scales to your volume (US or metric).
4- Export inspector-ready monthly PDFs
One tap to generate professional summaries for audits, city/health reviews, or management reports.
5- Targets & guided corrections
Set your desired ranges and get step-by-step help to bring water back into balance.
6- Graph your readings (new!)
Review recent days, weeks, or months of chemistry in interactive charts for smarter water-quality management.
7- Units your team expects
Gallons/Liters, °F/°C, and smart dose units (fl oz / gal / oz / lb or mL / L / g / kg).
Offline + cloud = reliable operations:
- Works anywhere: Logging, editing, and reviewing continue without internet.
- Automatic sync: When the device is online, the app syncs changes to your account for backup and device upgrades.
- Inspector-ready always: Your monthly logbooks are available on device and as PDFs you can email or archive.
Designed for:
- Commercial operators: Hotels, HOAs, apartments, community centers, fitness clubs, schools, and service companies.
- Residential owners: Anyone who wants simple steps, accurate dosing, and neat records.
Free vs Pro:
- Free: Quick logging, LSI gauge, targets, multiple pools/spas.
- Pro (subscription): Advanced chemical calculator & corrections, pH–TA coupled guidance, and PDF export.
Notes & safety:
Calculations use typical concentrations and industry formulas; always follow product labels, add chemicals with circulation running, brush after additions, and retest. Local regulations vary—use the app to support, not replace, your professional judgment and your jurisdiction’s code.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- New way to get member seats
The developer, POOL BY ENGINEER INC, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Contact Info
- Contacts
- User Content
- Identifiers
- Usage Data
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Pool By Engineer INC
- Size
- 26.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Contains
Unrestricted Web Access
- In-App Purchases
Yes
- Pro Monthly $11.99
- 10 Seat Monthly Plan $119.99
- 9 Seat Monthly Plan $109.99
- 8 Seat Monthly Plan $94.99
- 7 Seat Monthly Plan $84.99
- 6 Seat Monthly Plan $69.99
- 5 Seat Monthly Plan $59.99
- 4 Seat Monthly Plan $47.99
- 3 Seat Monthly Plan $35.99
- 2 Seat Monthly Plan $23.99
- Copyright
- © 2025 Pool By Engineer Inc.