Comparison

ChronoCalc vs Dual Calculator

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

Head to head
About

ChronoCalc

This app simplifies time calculations, offering features like addition, subtraction, multiplication, and division of time intervals. It supports various time formats, millisecond precision, and provides an activity timer for elapsed time tracking.

Highlights
  • Time addition, subtraction, multiplication, division
  • Millisecond precision
  • AM/PM and 24-hour time formats
  • Intervals in H:M:S:MS or decimals
  • Activity timer for elapsed time
  • Convert between hours, minutes, seconds, milliseconds
  • Multiple color schemes
Features
Read full description

ChronoCalc is designed to streamline all your time calculation needs. - If I start work at 8:40, and end at 4:25, how much time has passed? - What time will it be in 5 and a half hours? What time was it 5 and a half hours ago? - If I watch 8 episodes lasting 43 minutes each, how much total time is that? - How many hours are 143 minutes? Features: - Addition, Subtraction, Multiplication, and Division - Subtract From operator lets you enter start times before end times - perfect for long lists of calculations - Millisecond precision - AM, PM, and Military/24h time - Intervals can be entered as H:M:S:MS or as decimals - Activity Timer makes it easy to get the elapsed time between the start and end of an activity - Easily convert between hours, minutes, seconds, and milliseconds - 6 different color schemes to choose from

About

Dual Calculator

Features
Read full description

Two calculators. One screen. Faster calculations. Dual Calculator: Split Screen gives you two calculators in one clean workspace, making it easy to calculate, compare results, and work with multiple numbers without constantly switching screens. Whether you're studying, working with numbers, handling business calculations, or solving scientific math problems, the dual calculator layout helps you work faster and stay focused. KEY FEATURES • TWO CALCULATORS ON ONE SCREEN Run two separate calculations side by side and keep both results visible at the same time. • INSTANT VALUE TRANSFER Move a result from one calculator to the other with a tap. Continue your calculations without memorizing or retyping numbers. • BASIC CALCULATOR Handle everyday calculations quickly with a simple and easy-to-use interface. • SCIENTIFIC CALCULATOR Access scientific functions when you need more advanced calculations for math, science, engineering, or study. • COMPARE RESULTS EASILY Calculate different values simultaneously and compare your results without losing your previous calculation. • BUILT FOR MULTITASKING Perfect when one calculator isn't enough. Work with two calculations independently while keeping everything visible. • FAST AND LIGHTWEIGHT Designed for quick calculations, reliable performance, and an uncomplicated calculator experience. USEFUL FOR Students solving math and science problems, engineers working with multiple values, accountants and business users comparing figures, and anyone who regularly needs more than one calculation at a time. Instead of switching between calculator screens or writing down temporary results, keep two calculations ready at once. Calculate side by side. Compare instantly. Transfer results with a tap. Download Dual Calculator: Split Screen and make everyday calculations faster and easier.

Screenshots

ChronoCalc4 screens
Dual Calculator3 screens

Verdict

The call

The clearest difference is ads: ChronoCalc at none against Dual Calculator's shown. ChronoCalc also leads on iOS requirement (8.0 vs 15.0). Dual Calculator's advantage is update cadence (every 5 months vs every 12 months). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ChronoCalc ships an update every 12 months, Dual Calculator every 5 months. The most recent releases landed on September 25, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 7 level
ChronoCalc versus Dual Calculator: the parameters behind the verdict, then further details
ParameterChronoCalcDual Calculator
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 12 monthsEvery 5 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size237 MB33 MB
Age rating4+4+
DeveloperAugusta UniversityHuzaib Sayyed

In-app purchases

None

ChronoCalc

No in-app purchases

None

Dual Calculator

No in-app purchases

Questions

Is ChronoCalc free?
ChronoCalc is free to download, with no in-app purchases.
Is Dual Calculator free?
Dual Calculator is free to download, with no in-app purchases.
Do ChronoCalc or Dual Calculator have ads?
Dual Calculator shows ads; ChronoCalc does not.
Which is updated more often, ChronoCalc or Dual Calculator?
ChronoCalc ships an update every 12 months, and Dual Calculator every 5 months. Most recently, ChronoCalc was updated on September 25, 2026 and Dual Calculator on October 4, 2026.

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