Best Langelier Saturation Index Apps

22+ iOS apps curated and reviewed

3.7 avg rating
18 free apps
Updated May 2026

Saturation Index Calculator is the household name in langelier saturation index, but it's far from the only option. We track 22+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Langelier Saturation Index

Saturation Index Calculator#1

Saturation Index Calculator by Affektive Software LLC

Editor's Choice
📊 Productivity
4.3(4 ratings)
Free
Saturation Index Calculator screenshot 1
Saturation Index Calculator screenshot 2

This simple and user-friendly tool helps you determine if your pool chemistry is balanced by calculating the Langelier Saturation Index. By inputting your pool's pH, temperature, alkalinity, calcium hardness, and total dissolved solids, you'll get an assessment of your water's balance and recommendations for maintaining your pool equipment.

LSI Calc DB Water Balance Log#2

LSI Calc DB Water Balance Log by Verosocial Studio

LSI Job Logbook
Strong Contender
💼 Business
1.0(1 ratings)
FreeIn-App Purchases
LSI Calc DB Water Balance Log screenshot 1
LSI Calc DB Water Balance Log screenshot 2

This application helps pool owners and professionals calculate the Langelier Saturation Index (LSI) of their pool water, ensuring it's properly balanced and healthy for swimmers. Simply enter your pool's pH, temperature, total alkalinity, and calcium hardness levels, and the app provides an instant LSI calculation, allowing you to track changes and make adjustments as needed.

More Langelier Saturation Index apps to explore

4
Steam
Steam
Steam
Steam properties calculator
$4.99
$9.99 | 50% OFF
🔧 Utilities
(14)
5
Bunker One - Fuel Calculator
Bunker One - Fuel Calculator
Bunker One - Fuel Calculator
by Askapps
Free
💼 Business
(2)
6
NPC Pro
NPC Pro
NPC Pro
by National Plasters Council, Inc
Free
$4.99 | 100% OFF

This essential tool for pool professionals and owners helps ensure balanced water chemistry and proper startup procedures for new plaster finishes, preventing costly repairs and extending the life of pool surfaces. Download it today to take the guesswork out of pool chemistry and access expert resources, podcasts, and community connections.

💼 Business
(0)
7
IOR - Index of Refraction
IOR - Index of Refraction
IOR - Index of Refraction
by Studio Orb, LLC
$0.99
🔍 Reference
(177)
8
Haverly's PetroCalc
Haverly's PetroCalc
Haverly's PetroCalc
Oil & Gas Property Tools
Free

This all-in-one oil and gas calculator streamlines petroleum calculations, including viscosity blending, crude-oil blending, and heating-value look-ups, with an intuitive interface and offline functionality. Download it today to tackle every oil and gas calculation with confidence, from distillation-curve conversions to viscosity predictions.

🔧 Utilities
(3)
9
PoolCalc
PoolCalc
PoolCalc
by Bonham Customs
Free

This calculator helps determine the scaling potential of pool water using the Langelier Saturation Index, allowing users to save and edit readings, locations, and notes. With a paid upgrade, pool professionals can also save multiple locations for their pool route, and users can provide feedback to help shape the app's future development.

🔧 Utilities
(1)
10
SI Calculator Pro
SI Calculator Pro
SI Calculator Pro
LSI / RSI Calculator
Free
🔧 Utilities
(0)
11
SHIMADZU UV
SHIMADZU UV
SHIMADZU UV
by Shimadzu Business Systems Corporation
Free

This handy application allows users of UV-Vis Spectrophotometers to quickly check the chemical and physical characteristics of solvents and perform unit conversions. It provides easy access to solvent data and a convenient converter tool for laboratory operations, making it a useful resource for users - try it out today!

🔧 Utilities
(1)
12
DC Values
DC Values
DC Values
by Endress and Hauser Instruments International AG
Free
💼 Business
(0)
13
Neutrons4Science
Neutrons4Science
Neutrons4Science
by Institut Laue-Langevin
Free

Explore the fascinating world of neutrons and discover how they help us understand the materials around us and the fundamental laws of physics. Through interactive 3D animations, experience neutron science and learn about innovative methods of neutron spectroscopy, all without needing to be a scientist, just curiosity is required.

📚 Education
(1)
14
Rheonics SensorView
Rheonics SensorView
Rheonics SensorView
Monitor Rheonics Sensors BLE
Free

This application connects to inline viscometers and density meters wirelessly, displaying measurements such as viscosity, density, and temperature in real-time. It features a customizable graph and plans to add estimated parameters in future updates, with ongoing development based on user feedback.

📊 Productivity
(2)
15
Pool Calculator & Chemistry
Pool Calculator & Chemistry
Pool Calculator & Chemistry
Water Balance Test & Dosage
Free
💼 Business
(0)
16
Standard Deviation Calculate
Standard Deviation Calculate
Standard Deviation Calculate
Statistics average calculator
Free
🔧 Utilities
(3)
17
Colorimetric Titration
Colorimetric Titration
Colorimetric Titration
Performs a colour analysis.
Free
🔧 Utilities
(0)
18
Water-Content
Water-Content
Water-Content
Water Content & Hydrates
Free
$6.99 | 100% OFF
📊 Productivity
(0)
19
Ekofluid Esca
Ekofluid Esca
Ekofluid Esca
Water Content Recalculation
Free
🔧 Utilities
(0)
20
Stochastic Processes
Stochastic Processes
Stochastic Processes
by Ilona Kosinska
Free
📚 Education
(0)