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Best Four.nta Apps

207+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated June 2026

Out of 207+ FOUR.NTA apps on iOS, 19 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 Four.nta Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Calculator₊Calculator₊Free4.7★ (1.7M)YesYesSep 2026
2EduCalc ClassicEduCalc ClassicFree3.9★ (303)NoYesAug 2026
3Measuring Tape, Photo RulerMeasuring Tape, Photo RulerFree4.2★ (2.6K)YesYesSep 2026
4Calculator Air: AI Math SolverCalculator Air: AI Math SolverFree4.7★ (83K)NoYesSep 2026
5MathMaster: Math Solver & HelpMathMaster: Math Solver & HelpFree4.6★ (12K)YesYesSep 2026
6Algebra Math SolverAlgebra Math SolverFree4.0★ (7K)NoYesSep 2026
7FastMath - Photo Math SolverFastMath - Photo Math SolverFree4.2★ (51K)YesYesSep 2026
8Astra AI: Study & Exam PrepAstra AI: Study & Exam PrepFree4.8★ (3.5K)YesYesSep 2026

Top Picks for Four.nta

Calculator₊#1

Calculator₊ by Impala Studios

Basic, Scientific, Plus Calc
Editor's Choice
🔧 Utilities
4.7😞(1.7M ratings)
FreeAdsIn-App Purchases
#100in Utilities
Calculator₊ screenshot 1
Calculator₊ screenshot 2
Calculator₊ screenshot 3
Calculator₊ screenshot 4
Calculator₊ screenshot 5
Calculator₊ screenshot 6

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
EduCalc Classic#2

EduCalc Classic by William Jockusch

Strong Contender
📚 Education
3.9😊(303 ratings)
FreeIn-App Purchases
EduCalc Classic screenshot 1
EduCalc Classic screenshot 2
EduCalc Classic screenshot 3
EduCalc Classic screenshot 4
EduCalc Classic screenshot 5

This app functions as a powerful graphing calculator with extensive scientific functions, unit conversion, and a built-in math and science reference. It supports graphing multiple equations, polar coordinates, and implicit functions, making it ideal for complex calculations and homework.

What We Love

  • 👍 Easy to use
  • 🚀 Powerful features
  • 💡 Helpful references and resources
  • 🔒 Reliable performance
  • 🤖 Useful for math and engineering
  • 💰 Great value for free app

Room to Improve

  • 🐛 Occasional glitches and bugs
  • 🤔 Confusing interface in some areas
  • 🔍 Difficult to find certain functions
  • 🔍 Lack of customization options
Measuring Tape, Photo Ruler#3

Measuring Tape, Photo Ruler by Grymala sp. z o.o.

Meter: measure length, height
Worth Considering
📊 Productivity
4.2😞(2.6K ratings)
FreeAdsIn-App Purchases
Measuring Tape, Photo Ruler screenshot 1
Measuring Tape, Photo Ruler screenshot 2
Measuring Tape, Photo Ruler screenshot 3
Measuring Tape, Photo Ruler screenshot 4
Measuring Tape, Photo Ruler screenshot 5
Measuring Tape, Photo Ruler screenshot 6

This app offers precise measurements using augmented reality and on-screen tools. It caters to both professional and everyday needs with features like a flexible measuring tape, bubble level, and photo ruler. Save and manage your measurements within projects for easy access.

What We Love

  • 🚀 Accurate measurements
  • 👍 Convenient and portable
  • 💡 Useful for various applications

Room to Improve

  • 🐛 Crashes and freezes
  • 🔋 High battery consumption
  • 💰 Excessive ads and paywalls
  • 🔍 Inaccurate measurements

More Four.nta apps to explore

FAQ about Four.nta

What are the best FOUR.NTA apps for iPhone?
Calculator₊ tops our FOUR.NTA apps ranking as of June 2026, with a 4.7-star average from 1.7M App Store ratings, and it's free to download.
Yes — 19 of the top FOUR.NTA apps we rank are free to download, including Calculator₊ and EduCalc Classic.
Calculator₊ shows ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 207+ FOUR.NTA apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
Calculator₊ offers several subscription plans, including monthly and half-yearly options, with prices ranging from $0.99 to $3.99. Many plans include free trial periods of 3 or 7 days.
The AI-powered Math Solver is designed to instantly solve math equations, quizzes, and word problems, including those captured via photo. While specific accuracy metrics are not provided, the feature aims to provide quick solutions.