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Best Orenda Calculator Apps

250+ iOS apps curated and reviewed

3.5 avg rating
18 free apps
Updated September 2026

Finding the right orenda calculator apps can be overwhelming with so many options. We've analyzed 250+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Orenda Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1OrendaOrendaFree4.7★ (473)NoNoSep 2026
2Calculator #Calculator #Free4.6★ (36K)YesYesSep 2026
3Calculator‰Calculator‰Free4.9★ (409K)YesNoSep 2026
4Calculator for iPad!Calculator for iPad!Free4.7★ (61K)NoNoSep 2026
5Calculator - Basic & NoAdsCalculator - Basic & NoAdsFree2.0★ (1)NoNoMay 2026
6Calculator :)Calculator :)Free3.0★ (1)NoNoMay 2026
7Calculator: Simple & CleanCalculator: Simple & CleanFree—NoNoAug 2026
8Calculator: 1-2-3 Number PadCalculator: 1-2-3 Number PadFree—NoYesAug 2026

Top Picks for Orenda Calculator

Orenda#1

Orenda by Hasa Inc.

Pool Calculator and Education
Editor's Choice
📊 Productivity
4.7😊(473 ratings)
Free
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This app helps you master pool chemistry by accurately calculating chemical dosages and balancing water based on the LSI. It offers a user-friendly experience for both novices and professionals, including a volume estimator and educational videos.

What We Love

  • 🚀 Easy to use
  • 💡 Helpful for pool maintenance
  • 🚀 Simplifies pool chemistry
  • 👍 Provides valuable information
  • 👍 Great educational resources
  • 👍 Useful app for pool professionals

Room to Improve

  • 🐛 Issues with updating desired levels
  • 🐛 Metric system not working properly
  • 🐛 Difficult to input readings
  • 🐛 Lack of history/logging functionality
Calculator ##2

Calculator # by Incpt.Mobis

Scientific Calculator
Strong Contender
🔧 Utilities
4.6😐(36K ratings)
FreeAdsIn-App Purchases
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This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

What We Love

  • 👍 Easy to use
  • 🚀 Powerful functionality
  • 💡 Helpful for math classes
  • ⭐ Great for students
  • 👌 Works like a real calculator

Room to Improve

  • 🔍 Confusing interface after update
  • 📢 Too many intrusive ads
  • 💰 Paywall for advanced features
  • 🐛 Incorrect calculations
  • 🔇 Loud audio ads
Calculator‰#3

Calculator‰ by Tim O's Studios, LLC

Default Calculator
Worth Considering
🔧 Utilities
4.9😊(409K ratings)
FreeAds
Calculator‰ screenshot 1
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This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.

What We Love

  • 👍 Easy to use
  • 👍 Large, clear buttons
  • 👍 Accurate calculations
  • 👍 Simple, no-frills design
  • 👍 Reliable and stable
  • 👍 Helpful for visual impairments

Room to Improve

  • 🔍 Lack of advanced features
  • 💰 Ads can be intrusive
  • 🔒 Concerns about security/malware
  • 🐛 Occasional bugs and glitches

More Orenda Calculator apps to explore

FAQ about Orenda Calculator

What are the best orenda calculator apps for iPhone?
Orenda tops our orenda calculator apps ranking as of September 2026, with a 4.7-star average from 473 App Store ratings, and it's free to download.
Yes — 18 of the top orenda calculator apps we rank are free to download, including Orenda and Calculator #.
Orenda has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ orenda calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
The Orenda app is a swimming pool calculator designed to help users master pool chemistry. It accurately calculates chemical dosages and balances water according to the LSI, making pool chemistry easier for both novices and professionals.
Key features include a chemical dosing calculator, LSI water balancing, a pool volume estimator, a user-friendly interface, and access to educational videos within the app.