Comparison

All in One Calculator vs Compalight

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

Head to head
About

All in One Calculator

This comprehensive calculator app offers a wide range of functionalities for everyday and complex calculations. It features multiple calculator views, a unit converter, and a detailed history log. Designed for ease of use and accessibility, it supports multitasking and various input methods.

Highlights
  • Multiple calculator views (Standard, RPN, Programmer)
  • Extensive unit converter with nearly 500 units
  • Detailed calculation history with annotation
  • Multitasking and drag-and-drop support
  • Adjustable precision and keyboard shortcuts
  • Light and Dark appearance options
Features
Read full description

All in One (aio) Calculator puts three calculators and a unit converter in one app: infix, RPN and programmer, with fractions, statistics, and close to 500 units in 38 measurements. Ideal for everyday use or more complex needs. The app is free and without ads. It's an easy-to-use, modern calculator. General features • Designed for iPhone and iPad • Sidebar and tab bar for easier navigation and sharing of data • Open a sidebar entry in its own window: drag it to the edge of the screen, pinch it apart, or use its context menu • Drag a calculator button to the edge of the screen to create a new calculator window • Widget showing recent results • Context menus throughout for quick access to many features • Scribble • Windowed apps and Stage Manager • Multitasking • Quick Notes • Capture text • Keyboard shortcuts • Mark favorites and edit the lists to show only what you use • Full support for drag and drop • Light and Dark appearance • Quick Guide for easy onboarding • Toolbar for easy access to many features • Accessibility features like VoiceOver and Voice Control • Speak any result aloud • Home Screen quick actions from the app icon • Delete button for easy editing • Undo and redo • Adjustable precision for decimal results, with a slider for quick changes • Spotlight Search • App Intents for use with Shortcuts Calculator Views • Expressions written in mathematical form • Views for Infix (standard), RPN and Programmer • Statistical functions (average, standard deviation and more) • Expression editing • Share results, including using AirDrop • Common memory functions • View contents in memory • Multiline expression in portrait and landscape • Every function is available in portrait, so there is no need to rotate the device: slide the keypad down to reveal the advanced functions • Landscape shows more keys at once • Groups of advanced functions: switch from the toolbar or by swiping the keypad, and long press the toolbar button to see each group by name • Pinch the result to adjust the precision • Various button styles • Number pad on the right or left for better accessibility Unit Converter • Close to 500 units in 38 measurements, including Currency • Share a result, or paste it back into the calculator for further use • Search measurements and units • Favorite units sync across your devices, and with Converter of Units, through iCloud History • History (paper tape) lets you see and use previous calculations • Results from the calculator and the unit converter are saved here • Annotate history entries to remember what they were • Search in history • Share a previous result, or paste it back into the calculator • Optional iCloud sync across your devices Information • Detailed in-app help for every feature • Table of contents and search allow you to find topics of interest RPN • Shows as many rows in the stack as needed • Shows the expression that generates the result • Drag and drop among rows • Buttons to manipulate the stack Programmer • Support for hexadecimal, octal and binary number systems • Manipulate individual bits • Many bitwise operators • Shows equivalent ASCII and Unicode characters Fractions • Fractions can be converted to different forms, including decimal • Fraction keys can be changed to other keys in portrait mode You no longer need several calculators, nor a unit converter. Future updates will continue to add more features. Enjoy our app that, as always, is free and without ads!

About

Compalight

Features
Read full description

Compalight is a specialised text markup tool. Import text from any source — paste, photograph with OCR, or dictate — edit freely, and review every change in a word-level redline. WHAT YOU GET 1. Three-tab workflow: Original (unlocked/ read-only), Show Changes (word-by-word redline), and Output (your edited text). Switch between tabs with a tap. 2. Word-level change tracking with move detection. Insertions in blue, deletions in red, relocated text in green. Tap any change to revert it individually. 3. Four export formats: plain text, clipboard, as well as comprehensive Word file (.docx), and comprehensive PDF — both with full redline markup, including Original, Changes, and Output sections. 4. Local OCR text import. Photograph a printed page and Compalight recognises the text using Apple Vision. Optional clean-up pass fixes common OCR errors like broken words and stray page numbers. 5. On-device speech dictation. Tap the microphone and dictate text directly into the editor. Powered by Apple Speech, processed entirely on your device. PRIVACY FIRST Everything stays on your device. No cloud. No AI. No analytics. No tracking. No ads. No account required. Compalight stores only three preferences locally: appearance mode, language, and consent flags. Nothing is transmitted anywhere. MULTILINGUAL Full support for English, German, French, Spanish, Japanese, and Simplified Chinese (Mandarin). The app manages its own language setting. Run Compalight in any supported language regardless of your device language.

Screenshots

All in One Calculator4 screens
Compalight4 screens

Verdict

The call

The clearest difference is price: All in One Calculator at Free against Compalight's $1.99. Compalight's advantage is update cadence (weekly vs monthly). On ads, in-app purchases, device support and iOS requirement 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

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

UpkeepUpdate frequency

All in One Calculator ships an update monthly, Compalight weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
All in One Calculator versus Compalight: the parameters behind the verdict, then further details
ParameterAll in One CalculatorCompalight
PriceFree — better$1.99
Rating4.7 (187 ratings) — better—
Positive reviews84.8% of reviews—
Number of ratings187 — better—
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.018.0
Further details — not scored
Size70 MB2 MB
Age rating4+4+
DeveloperRamon RivasDANIEL STENGEL

Bugs and requests

All in One Calculator

Reported bugs

9 issues
  • Constantly nags to login to iPhone account
  • Keypad is unresponsive
  • App 'blinks' on iPad Pro
  • Two taps of enter key required
  • Exponent function (y^x) yields 0
Show 4 more
  • Copy and paste don't work (initially)
  • Rotation does not work
  • Stack entries not showing on screen in RPN mode
  • Miscalculations reported

Requested features

2 requests
  • Electrical circuit calculator/chart for AC/DC circuits
  • Support for signed integers (16, 32, 64 bit) in programmer mode

Compalight

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

All in One Calculator

No in-app purchases

None

Compalight

No in-app purchases

Questions

Is All in One Calculator free?
All in One Calculator is free to download, with no in-app purchases.
Is Compalight free?
Compalight costs $1.99, with no in-app purchases.
Do All in One Calculator or Compalight have ads?
Neither All in One Calculator nor Compalight shows ads.
Which is updated more often, All in One Calculator or Compalight?
All in One Calculator ships an update monthly, and Compalight weekly. Most recently, All in One Calculator was updated on November 1, 2026 and Compalight on October 31, 2026.

Other comparisons