Comparison

re vs Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

re

This app offers a beautiful and intuitive timer experience powered by Apple Reminders. Quickly set timers, sync them across devices, and view them on your lock screen with Live Activities. It includes advanced features like full-screen alarms and the ability to import calendar events.

Highlights
  • Apple Reminders sync
  • Live Activities on lock screen
  • Full-screen alarms
  • Import calendar events
  • Multiple timers
  • Favorite and edit timers
Features
Read full description

re:timer is a beautiful and elegant timer app built on Apple Reminders. Set timers quickly, stay in sync across devices, and keep track of time with a clean, minimal interface. Features - Swipe to create timers - Apple Reminders sync - your timers on all platforms at once, powered by Apple - NEW: Live Activities - see your timers on the lock screen or in the Dynamic Island - NEW: Timers with Alarms (iOS 26) - full-screen take over, even if the app is closed or your phone is in Silent Mode! - Import Calendar events as timers - Multiple timers - with time between timers - Favorite and edit timers - Early reminders - Infinite timer history - Gestimer support / custom lists - URL scheme support - create timers from other apps - Minimal mode - And more coming!

About

Calculator

Features
Read full description

Calculator: Calculate Anything - Your Complete Math Solution The ultimate calculator app that goes far beyond your phone's default calculator. With 6 powerful modes, this app is perfect for students, professionals, and anyone who needs advanced mathematical tools. FEATURES: BASIC CALCULATOR - Standard arithmetic operations (addition, subtraction, multiplication, division) - Percentage calculations - Sign toggle - Clean, intuitive interface SCIENTIFIC CALCULATOR - Trigonometric functions (sin, cos, tan) with DEG/RAD mode - Logarithms (log base 10, natural log) - Square root and nth root - Exponentiation (x^y) - Exponential function (e^x) - Mathematical constants (π, e) - Parentheses support for complex expressions UNIT CONVERTER - Length: meter, kilometer, mile, yard, foot, inch, and more - Weight: kilogram, gram, pound, ounce, ton, stone - Temperature: Celsius, Fahrenheit, Kelvin - Volume: liter, gallon, quart, pint, cup, fluid ounce - Area: square meter, acre, hectare, square foot - Time: second, minute, hour, day, week, month, year - Energy: joule, calorie, BTU, kilowatt-hour - Pressure: pascal, bar, atmosphere, PSI, torr - Speed: m/s, km/h, mph, ft/s, knot - Currency: USD, EUR, GBP, JPY, CNY, and 10+ more currencies GRAPHING CALCULATOR - Plot mathematical functions - Customizable X and Y ranges - Find roots of functions - Visual function analysis - Support for complex expressions EQUATION SOLVER - Linear equations (ax + b = c) - Quadratic equations (ax² + bx + c = 0) - System of linear equations (2x2) - Step-by-step solutions ADVANCED CALCULATOR - Statistics: Mean, median, mode, standard deviation, variance - Combinatorics: Factorial, combinations, permutations - Number Theory: GCD, LCM - Matrix operations (2x2, 3x3) MODERN DESIGN - Beautiful dark theme - Smooth animations and transitions - Intuitive navigation - Responsive layout for all screen sizes - Touch-optimized buttons Perfect for: - Students studying math and science - Professionals needing quick calculations - Engineers and scientists - Anyone who wants more than a basic calculator Why choose Calculator: Calculate Anything? 6 powerful calculator modes in one app 100+ unit conversions across 10+ categories Professional-grade scientific functions Visual graphing capabilities Automatic equation solving Advanced statistical analysis Modern, user-friendly interface Completely free with no hidden costs Download now and experience the power of a complete calculator in one app!

Screenshots

re4 screens
Calculator4 screens

Verdict

The call

The clearest difference is price: Calculator at Free against re's $1.99. Calculator also leads on iOS requirement (15.1 vs 17.0). re's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Calculator is free to download; re costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 7 level
re versus Calculator: the parameters behind the verdict, then further details
ParameterreCalculator
Price$1.99Free — better
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 8 months—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size5 MB13 MB
Age rating4+4+
DeveloperJosh AngelsbergSung Jun Yoon

In-app purchases

None

re

No in-app purchases

None

Calculator

No in-app purchases

Questions

Is re free?
re costs $1.99, with no in-app purchases.
Is Calculator free?
Calculator is free to download, with no in-app purchases.
Do re or Calculator have ads?
Calculator shows ads; re does not.

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