Best Lsi Calculator Apps

215+ iOS apps curated and reviewed

4.2 avg rating
17 free apps
Updated May 2026

Whether you're new to lsi calculator or looking for an upgrade, our curated collection of 215+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Lsi Calculator

LSI Calculator#1

LSI Calculator by Pure Planet Science & Technology, Inc.

Commercial Pool Calculator
Editor's Choice
📊 Productivity
4.4(5 ratings)
Free
LSI Calculator screenshot 1
LSI Calculator screenshot 2
LSI Calculator screenshot 3

This mobile app helps users manage water better by providing a commercial pool calculator and eco-friendly water treatment solutions. Download the app to learn more and take control of your water management with the help of expert tools and education.

Orenda#2

Orenda by Hasa, Inc.

Pool Calculator and Education
Strong Contender
📊 Productivity
4.7😊(452 ratings)
Free
Orenda screenshot 1
Orenda screenshot 2
Orenda screenshot 3
Orenda screenshot 4

Easily master pool chemistry and balance water chemicals using a user-friendly pool calculator app. Enhance your pool maintenance experience with accurate dosing and educational resources. Experience hassle-free pool chemistry with Orenda!

What We Love

  • 🚀 Easy to use
  • 💡 Helpful for pool maintenance
  • 🚀 Simplifies pool chemistry
  • 👍 Provides valuable information

Room to Improve

  • 🐛 Issues with updating desired levels
  • 🐛 Metric system not working properly
  • 🐛 Difficult to input readings
LSI Calc DB Water Balance Log#3

LSI Calc DB Water Balance Log by Verosocial Studio

LSI Job Logbook
Worth Considering
💼 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 Lsi Calculator apps to explore

4
Pool Math by TroubleFreePool
Pool Math by TroubleFreePool
Pool Math by TroubleFreePool
Easy pool care and maintenance
Free

An application for pool care and maintenance helps users easily manage and track their swimming pool's chlorine, pH, and other levels to determine the right chemicals to add for crystal clear water. Features include calculators, maintenance tracking, weather conditions, and a bleach price calculator. Premium subscribers gain access to additional features like unlimited test log history storage and maintenance reminders.

🔧 Utilities
(272)
5
Calculator #
Calculator #
Calculator #
Scientific Calculator
Free

Calculate complex mathematical equations effortlessly with this intuitive app. Simplify your calculations on the go with advanced features like graph plotting and equation solving. Download now to supercharge your math skills!

🔧 Utilities
(36K)
6
Calculator for iPad!
Calculator for iPad!
Calculator for iPad!
Basic & Scientific Calculator
Free

Quickly crunch numbers with our user-friendly iPad calculator app that offers basic and scientific functions. Download now for accurate calculations on the go!

🔧 Utilities
(60K)
7
Calculator⁼
Calculator⁼
Calculator⁼
Fraction, Scientific Calc +
Free

A handy math assistant for solving basic and scientific calculations intuitively and quickly. Become a math master with this free app!

🔧 Utilities
(357K)
8
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

A top-rated scientific calculator app on iOS devices offering advanced math functions with a user-friendly interface for users of all levels. Features include step-by-step solutions, math photo solving, and handwriting recognition. Enhance your calculations with this versatile tool.

📚 Education
(6.2K)
9
Calculator +
Calculator +
Calculator +
Scientific Calc Plus Fraction
Free

Experience the award-winning calculator app for iPad and iPhone, offering a free basic and scientific calculator with an elegant design, simple usability, and beautiful interface. Calculate with ease and precision today!

🔧 Utilities
(9.6K)
10
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
Calculates everything. Try it.
Free

A versatile calculator app for iPhone and iPad offering over 40 calculators and unit converters for finance, health, and more. Simplify your calculations with just one app today!

📊 Productivity
(4.8K)
11
Calculator₊
Calculator₊
Calculator₊
Basic, Scientific, Plus Calc
Free

Try Calculator₊, the ultimate mathematics tool offering basic, scientific, and plus calculations. Ideal for homework, exams, and managing expenses, this app is like having a personal math tutor on your phone. Download now for easy and intuitive math solutions!

🔧 Utilities
(1.7M)
12
Panecal Scientific Calculator
Panecal Scientific Calculator
Panecal Scientific Calculator
For engineers and students
Free

A scientific calculator app designed for engineers and students, offering features like formula display, quick editing, memory functions, and various calculation modes. Improve accuracy and efficiency with easy formula navigation and editing tools. Explore advanced functions for different number systems and mathematical operations.

🔧 Utilities
(1.9K)
13
Calculator HD Pro
Calculator HD Pro
Calculator HD Pro
Basic & Scientific Calc
$9.99

A powerful calculator app for all your mathematical needs, featuring advanced functions, intuitive interface, and customizable settings. Download now for a seamless calculation experience.

🔧 Utilities
(11K)
14
Digits Tape Calculator
Digits Tape Calculator
Digits Tape Calculator
The calculator for humans
$1.99

Try Digits Tape Calculator, the calculator designed for humans. With a unique correctable tape feature, spreadsheet-like editing, and calculator simplicity, it's perfect for tracking expenses and budgets. Get organized on-the-go with Digits 3 for iOS.

🔧 Utilities
(1.1K)
15
Calculator HD Pro Lite
Calculator HD Pro Lite
Calculator HD Pro Lite
Basic & Scientific Calc
Free

A professional-grade calculator app designed for quick and accurate mathematical calculations on-the-go. Upgrade to the full version for advanced features and functionalities.

🔧 Utilities
(51K)
16
Calculator Pro Lite
Calculator Pro Lite
Calculator Pro Lite
Best Calculator
Free

A versatile and customizable calculator app offering basic and scientific functions, memory features, history tape, and various layout options. Users can personalize their color themes, access scientific functions, and easily perform complex calculations, all with ad-supported convenience. Explore the app now for a powerful and user-friendly calculation experience!

🔧 Utilities
(3K)
17
Sci:Pro Calculator
Sci:Pro Calculator
Sci:Pro Calculator
by Jerry Montgomery
Free

A versatile calculator app with Basic, Scientific, and Programmer modes for iPhone, iPad, and iPod Touch. Easily view history and share results via email or copy. Get precise calculations on-the-go!

🔧 Utilities
(3.6K)
18
Calculator for iPad₊
Calculator for iPad₊
Calculator for iPad₊
Basic, Scientific, Plus Calc
Free

A powerful math solver and scientific calculator for iPad and iPhone, featuring advanced functions and quick calculations. Share your results easily and master your business expenses with percentage calculations. Get it now!

🔧 Utilities
(126K)
19
Calculator HD++
Calculator HD++
Calculator HD++
by smalltech sarl
Free

Experience a high precision calculator app that offers a user-friendly interface, supports multiple functionalities like undo, switching workspaces, Bluetooth keyboard compatibility, and more. Print and share your calculations with ease and precision for free!

🔧 Utilities
(268)
20
Pool Calculator AWT
Pool Calculator AWT
Pool Calculator AWT
Pool volume calculator
Free

This pool maintenance tool helps you calculate your pool's water volume, balance water chemistry, and determine the scaling potential of your water. With its multiple functions, it simplifies pool maintenance by accurately calculating chemical needs and target chlorine levels.

📊 Productivity
(1)