# ChronoCalc

> A utility app for precise time calculations and conversions. (iPhone/iPad app by Augusta University.)

- Source: https://appshunter.io/ios/app/chronocalc/id927026325 (this page in markdown: same URL + `.md`)
- Developer: [Augusta University](https://appshunter.io/developer/319778530)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 237 MB
- Languages: English
- Released: 2014-10-15
- Data updated: 2026-08-15
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/chronocalc/id927026325/reviews.md

## What is ChronoCalc?

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

## Key features

- 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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/chronocalc/id927026325/reviews.md

### 5/5 — App Review

*2016-06-08*

This app is helpful tool towards time management skills!!

## Frequently asked questions about ChronoCalc

### What are the basic calculation functions in ChronoCalc?

ChronoCalc supports addition, subtraction, multiplication, and division of time intervals. It also includes a 'Subtract From' operator for easy calculation of durations between start and end times.

### Can ChronoCalc handle very precise time measurements?

Yes, ChronoCalc offers millisecond precision for all its calculations, ensuring accuracy for even the most detailed time tracking needs.

### Does ChronoCalc support different time formats?

ChronoCalc accommodates both AM/PM and Military/24-hour time formats. Intervals can be entered as H:M:S:MS or as decimal values.

### Is ChronoCalc suitable for tracking activity durations?

Absolutely. The built-in Activity Timer makes it simple to calculate the elapsed time between the start and end of any activity.

### How does ChronoCalc help with time unit conversions?

ChronoCalc allows you to easily convert between hours, minutes, seconds, and milliseconds, simplifying any time-related unit conversion task.

### What devices is ChronoCalc available on?

ChronoCalc is available for iPhone, iPad, and iPod devices.

### How often is ChronoCalc updated?

ChronoCalc was last updated on October 12, 2015, with version 1.2. It was initially released on October 15, 2014.

### Does ChronoCalc have ads?

No, ChronoCalc is ad-free, providing an uninterrupted calculation experience.

## Version history (last 2 releases)

### 1.2 — 2015-10-12

This app has been updated by Apple to display the Apple Watch app icon.

Fixed bug that caused app to crash in iOS 9
Minor graphics improvements

### 1.0 — 2014-10-15

No release notes.

## Apps similar to ChronoCalc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Timely: Time Calculator](https://appshunter.io/ios/app/timely-time-calculator/id1270645866) | 2.5 (2) | Free | Utilities |
| [WorkdaysCounter](https://appshunter.io/ios/app/workdayscounter/id6447691429) | 5.0 (2) | Free | Utilities |
| [Paper Calc Office Lite](https://appshunter.io/ios/app/paper-calc-office-lite/id347713516) | 3.8 (44) | Free | Utilities |
| [3Calc](https://appshunter.io/ios/app/3calc/id6743180803) | 5.0 (3) | $0.99 | Utilities |

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All apps by Augusta University: https://appshunter.io/developer/319778530

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*