Best Easy Custom Formula Calculator Apps

247+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated November 2026

Out of 247+ easy custom formula calculator apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Easy Custom Formula Calculator Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Easy Custom Formula CalculatorEasy Custom Formula CalculatorFree—NoNoSep 2026
2Calculator for iPad!Calculator for iPad!Free4.7★ (61K)NoNoNov 2026
3Calculator--Calculator--Free4.7★ (916)YesNoOct 2026
4Calculator‰Calculator‰Free4.9★ (410K)YesNoNov 2026
5Calculator - CalcRightCalculator - CalcRightFree4.8★ (874)NoNoNov 2026
6Calculator·Calculator·Free4.9★ (34K)YesYesNov 2026
7Calculator - CalcProCalculator - CalcProFree3.7★ (10)YesYesOct 2026
8Calculator +Calculator +Free4.6★ (10K)YesYesNov 2026

Top Picks for Easy Custom Formula Calculator

Calculator for iPad!#2

Calculator for iPad! by 7th Gear

Basic & Scientific Calculator
Strong Contender
🔧 Utilities
4.7😊(61K ratings)
Free
Calculator for iPad! screenshot 1
Calculator for iPad! screenshot 2
Calculator for iPad! screenshot 3
Calculator for iPad! screenshot 4

This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.

What We Love

  • 📐 Versatile calculator with basic and scientific modes
  • 📝 Useful note-taking and calculation history features
  • 🎨 Customizable color schemes
  • 💻 Works well on both iPad and iPhone
  • 👍 Easy to use and intuitive interface

Room to Improve

  • 💰 Ads can be intrusive in free version
  • 🔒 Lack of transparency around in-app purchases
  • 🔍 Difficulty finding and accessing premium features
  • 🖥️ Layout issues in split-screen mode
  • 🔢 Inconsistent button placement between portrait and landscape
4.7😊(916 ratings)
FreeAds
Calculator-- screenshot 1
Calculator-- screenshot 2

This is a straightforward calculator application designed for ease of use and clear readability. Users can personalize the app's appearance by choosing their preferred background and display themes.

What We Love

  • 💻 Easy to use
  • 🎨 Colorful and visually appealing
  • 👀 Large, easy-to-read numbers
  • 🎯 Accurate calculations
  • 🆓 Free app

Room to Improve

  • 🔊 Loud button clicking sound that can't be turned off
  • 📏 Lacks landscape mode
  • 🔢 No percentage or advanced math functions

More Easy Custom Formula Calculator apps to explore

FAQ about Easy Custom Formula Calculator

Are there free easy custom formula calculator apps for iPhone?
Yes — 20 of the top easy custom formula calculator apps we rank are free to download, including Easy Custom Formula Calculator and Calculator for iPad!.
Easy Custom Formula Calculator has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 247+ easy custom formula calculator apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.