Best Base Calculator & Converter Apps

249+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated October 2026

Every iPhone needs a few good base calculator & converter apps. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Base Calculator & Converter Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Base Calculator & ConverterBase Calculator & ConverterFree3.8★ (4)NoNoOct 2026
2Calculator₊Calculator₊Free4.7★ (1.7M)YesYesNov 2026
3Calculator‰Calculator‰Free4.9★ (410K)YesNoNov 2026
4Calculator +Calculator +Free4.6★ (10K)YesYesNov 2026
5Calculator for iPad!Calculator for iPad!Free4.7★ (61K)NoNoNov 2026
6Calculator: Basic & ScientificCalculator: Basic & ScientificFree4.6★ (205)YesYesOct 2026
7Base Converter and CalculatorBase Converter and CalculatorFree5.0★ (2)NoNoOct 2026
8Calculator: Simple CalculatorCalculator: Simple CalculatorFree——NoJun 2026

Top Picks for Base Calculator & Converter

3.8(4 ratings)
Free
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Easily convert numbers between binary, octal, decimal, and hexadecimal bases. Perform arithmetic operations like addition, subtraction, multiplication, and division across different bases. The app also saves your calculation history for quick access.

Calculator₊#2

Calculator₊ by Impala Studios B.V.

Basic, Scientific, Plus Calc
Strong Contender
🔧 Utilities
4.7😞(1.7M ratings)
FreeAdsIn-App Purchases
#79in Utilities
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This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.

What We Love

  • 💻 Useful calculator features
  • 🎨 Customizable backgrounds and themes
  • 📚 Helpful history tracking

Room to Improve

  • 📺 Intrusive full-screen ads
  • 💰 Expensive subscription model
  • 🔍 Ads blocking calculator functionality
Calculator‰#3

Calculator‰ by Tim O's Studios, LLC

Default Calculator
Worth Considering
🔧 Utilities
4.9😊(410K ratings)
FreeAds
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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 Base Calculator & Converter apps to explore

FAQ about Base Calculator & Converter

What are the best base calculator & converter apps for iPhone?
Base Calculator & Converter tops our base calculator & converter apps ranking as of October 2026, with a 3.8-star average from 4 App Store ratings, and it's free to download.
Yes — 20 of the top base calculator & converter apps we rank are free to download, including Base Calculator & Converter and Calculator₊.
Base Calculator & Converter has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 249+ base calculator & converter apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.