Chemical Tracking & LSI
Pool Chemical Log Software
Ditch the clipboard and paper chemical logs. Skimlog lets your technicians log chlorine, pH, alkalinity, CYA, calcium, salt and more with sliders on their phone, suggests chemical doses based on the readings and pool volume, and includes a Langelier Saturation Index calculator to check whether the water is balanced.
Every reading is saved with the service. Pull up any pool's chemistry history, and customers get a service report by email when the visit is completed.
No credit card required • 14-day free trial

How Chemical Logging Works
Log, calculate, and share.
Step 1
Test & Log Readings
Test the water, then slide each parameter to the reading on your phone. Free chlorine, pH, alkalinity, CYA, calcium, salt — all in one screen.
Step 2
Get LSI & Dosing Advice
Skimlog suggests chemical doses based on the readings and pool volume, and the LSI calculator shows whether the water is balanced.
Step 3
Store & Share Reports
Readings are saved with each service. Customers get a service report by email when the visit is completed.
Replace your clipboard with accurate digital logs
Dosing suggestions and an LSI calculator built in. Try it free for 14 days.
Complete Chemical Tracking for Pool Pros
- Slider-Based Entry
- No tiny text fields. Slide to your reading for free chlorine, pH, alkalinity, CYA, calcium, and salt.
- LSI Calculator
- Enter pH, temperature, alkalinity, calcium hardness, and TDS to see the Langelier Saturation Index and whether the water is corrosive, balanced, or scale-forming.
- Dosing Recommendations
- Skimlog suggests how much chlorine, acid, or other chemicals to add based on the readings and pool volume.
- Photo Documentation
- Attach before-and-after photos to every service. Photos are timestamped and saved with the service record.
- Chemistry History
- Look back at any pool’s past readings to spot changes in chlorine demand, pH, or calcium over time.
- Automated Customer Reports
- When a visit is completed, the customer gets a service report email with the readings, photos, and notes you choose to include.
Still on paper? Check water balance with the free pool LSI calculator or print a weekly pool chemical log sheet.
Questions pool pros ask
- What chemicals does Skimlog track?
- Technicians log chlorine, pH, alkalinity, calcium hardness, cyanuric acid (CYA), and salt, plus filter pressure.
- How does the LSI calculator work?
- Enter pH, water temperature, alkalinity, calcium hardness, and TDS. The calculator shows the LSI value and whether the water is balanced, corrosive, or scale-forming.
- Can customers see their chemical logs?
- Yes. The customer portal shows each pool’s chemistry readings, and customers get a service report by email when a visit is completed.
- Can I log chemicals offline?
- Yes. Technicians can log readings, add photos, and complete services without cell service. The data syncs when the device reconnects.
Accurate chemical logs, every pool, every visit
Start your free 14-day trial and go paperless this week.
No credit card required.