Best +666666666666666688888888888888888 Apps & Games

14+ iOS apps & games curated and reviewed

4.4 avg rating
12 free apps & games
Updated May 2026

▸ Calculator + is the household name in +666666666666666688888888888888888, but it's far from the only option. We track 14+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top +666666666666666688888888888888888 Apps & Games (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1▸ Calculator +▸ Calculator +$1.994.7★ (832)NoYesJul 2026
2Calculator, basic and advancedCalculator, basic and advancedFree4.6★ (78)YesNoMay 2026
3Base Calculator & ConverterBase Calculator & ConverterFree3.0★ (2)NoNoJul 2026
4Maths shortcut tricks number - Vedic maths tricks - mathematics magicMaths shortcut tricks number - Vedic maths tricks - mathematics magicFree3.0★ (1)NoNoMay 2026
5p-adelicp-adelicFreeNoNoMay 2026
6ProgCalcProgCalcFreeNoNoMay 2026
7my16cmy16cFreeNoYesJul 2026
8RPN Big Float CalculatorRPN Big Float CalculatorFree5.0★ (1)NoNoMay 2026

Top Picks for +666666666666666688888888888888888

▸ Calculator +#1

▸ Calculator + by CAT VIET SOFTWARE DEVELOPMENT & MEDIA JSC

Scientific Calculator
Editor's Choice
🔧 Utilities
4.7😞(832 ratings)
$1.99In-App Purchases
▸ Calculator + screenshot 1
▸ Calculator + screenshot 2
▸ Calculator + screenshot 3
▸ Calculator + screenshot 4

This app offers a comprehensive suite of 12 calculators, including scientific, currency, unit, and finance functions. It features advanced modes, extensive formula support, and a user-friendly interface for all calculation needs.

What We Love

  • 👍 Handy to use application
  • 🔢 Great calculator
  • 📊 Excellent for engineering & other use
  • 🔢 Very useful

Room to Improve

  • 🐛 Date function does not fit iPhone screen
  • 🐛 Alternate calculators no longer work
  • 🐛 Good calculator but not all function work
Calculator, basic and advanced#2

Calculator, basic and advanced by Saren Inden

Math made easy
Strong Contender
🔧 Utilities
4.6(78 ratings)
FreeAds
Calculator, basic and advanced screenshot 1
Calculator, basic and advanced screenshot 2
Calculator, basic and advanced screenshot 3
Calculator, basic and advanced screenshot 4
Calculator, basic and advanced screenshot 5
Calculator, basic and advanced screenshot 6

This app offers a comprehensive calculator with both simple and advanced modes. It includes an equation solver with step-by-step explanations, calculation history, graphing capabilities, and table generation for multiple inputs. Supports a wide range of mathematical operators and functions.

Base Calculator & Converter#3

Base Calculator & Converter by G Sanghani

Worth Considering
📚 Education
3.0(2 ratings)
Free
Base Calculator & Converter screenshot 1
Base Calculator & Converter screenshot 2
Base Calculator & Converter screenshot 3
Base Calculator & Converter screenshot 4
Base Calculator & Converter screenshot 5
Base Calculator & Converter screenshot 6

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.

More +666666666666666688888888888888888 apps to explore

4
Maths shortcut tricks number - Vedic maths tricks - mathematics magic
Maths shortcut tricks number - Vedic maths tricks - mathematics magic
Maths shortcut tricks number - Vedic maths tricks - mathematics magic
by EDUCATIONAL GAMES JOINT STOCK COMPANY
Free

Learn and practice 25 fun mathematical tricks to speed up calculations. These techniques help solve problems faster than traditional methods and are useful for honing basic skills like multiplication tables. Apply these skills in everyday situations to save time.

Learn 25 fun mathematical tricksSpeed up calculationsHone multiplication tables
🎮 Games
(1)
free
5
p-adelic
p-adelic
p-adelic
p-adics for everyone
Free
📚 Education
(0)
6
ProgCalc
ProgCalc
ProgCalc
38 Digit Swift Programmable
Free
📚 Education
(0)
7
my16c
my16c
my16c
Voyager 16C Microcode Emulator
Free
🔧 Utilities
(0)
8
RPN Big Float Calculator
RPN Big Float Calculator
RPN Big Float Calculator
by Stephan Jancar
Free

This advanced calculator offers unparalleled precision for complex mathematical operations, supporting up to 100,000 digits. It features both RPN mode and direct formula input, with a vast array of functions and built-in constants. Explore calculations with complex numbers, quaternions, and p-adic numbers.

High precision up to 100,000 digitsRPN and direct formula input modesComplex number and quaternion calculations
📚 Education
(1)
free
9
MathMind: Think Faster
MathMind: Think Faster
MathMind: Think Faster
Mental Math Tricks & Drills
Free

Master mental math techniques to calculate faster than a calculator. Learn proven tricks for multiplication, division, percentages, and more through clear explanations, practice drills, and timed challenges. Track your progress and build a consistent learning habit.

30 proven mental math tricksTechniques for multiplication, division, percentages, fractions, and moreStep-by-step explanations and 'why it works' sections
📚 Education
(1)
free with in-app purchases
10
N2x3x5x7x
N2x3x5x7x
N2x3x5x7x
a surreal number explorer
Free
🔧 Utilities
(0)
11
Calculator:AI Calculate
Calculator:AI Calculate
Calculator:AI Calculate
Scientific&Basic&Photo Math
Free

This portable computing assistant offers both basic and scientific calculations with a clean interface. It features a history log, currency and unit conversion, and a unique photo-based problem solver. Enjoy an ad-free experience for all your calculation needs.

Basic and scientific calculationsCalculation history logCurrency and unit conversion
🔧 Utilities
(2)
free with in-app purchases
12
Mathsjp
Mathsjp
Mathsjp
Math Practice and Calculator
Free

This app offers a math practice tool for calculations including addition, subtraction, multiplication, and division. It also handles BODMAS problems and features a quiz section with four difficulty levels. Users can manually calculate and input answers to check their work.

Addition, subtraction, multiplication, divisionBODMAS problem solvingQuiz section
📚 Education
(1)
free
13
Geek's hexadecimal calculator
Geek's hexadecimal calculator
Geek's hexadecimal calculator
Comfy calculator for coders.
$1.99
📊 Productivity
(0)
14
Septenvigintuple Calc
Septenvigintuple Calc
Septenvigintuple Calc
by Hideaki Uchikoshi
Free
🔧 Utilities
(0)

FAQ about +666666666666666688888888888888888

What are the best +666666666666666688888888888888888 apps & games for iPhone?
▸ Calculator + tops our +666666666666666688888888888888888 apps & games ranking as of May 2026, with a 4.7-star average from 832 App Store ratings, and it's priced at $1.99.
Yes — 12 of the top +666666666666666688888888888888888 apps & games we rank are free to download, including Calculator, basic and advanced and Base Calculator & Converter.
▸ Calculator + has no ads and offers in-app purchases, according to its App Store listing as of May 2026.
We track 14+ +666666666666666688888888888888888 apps & games on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides a powerful and versatile calculator with 12 different specialized tools. It includes basic, scientific, currency conversion, unit conversion, finance, date-time calculations, equation solving, statistics, base conversion, graphing, and a tip calculator. It also offers over 800 formulas within its Formula Toolkit.
Key features include multiple calculating modes (Standard, String, RPN), precision up to 31 digits, a comprehensive unit converter with over 3,300 units, a currency converter with daily updates, advanced scientific functions, an equation solver for polynomials and simultaneous equations, and a graphing calculator for up to three graphs.