# Date and Time Calculator Pro

> Calculate time differences and future/past dates with second-level precision. (iPhone/iPad app by 山 钟.)

- Source: https://appshunter.io/ios/app/date-and-time-calculator-pro/id582268389 (this page in markdown: same URL + `.md`)
- Developer: [山 钟](https://appshunter.io/developer/1289109809)
- Category: Utilities
- Price: $0.99
- Rating: 4.80/5 from 947 App Store ratings · 153 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 3 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2012-11-29
- Data updated: 2026-08-27
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/date-and-time-calculator-pro/id582268389/reviews.md

## What is Date and Time Calculator Pro?

Want to know how many days you can receive the Christmas gift? Want to know how many days you will have the college entrance exam?Want to know how many days the 158-day wealth management product expired? This tool helps you to calculate the distance between any time, down to second. It can also calculate the day after that day between any time. This tool is not only for wealth management but also for period time. It can tell you the date before or after a certain period.

## Key features

- Calculate time distance between dates
- Calculate days after a specific date
- Calculate date before a specific date
- Second-level precision
- Period time calculation

## What do users think of Date and Time Calculator Pro?

Overall sentiment: positive

**Pros**

- 👍 Extremely useful
- 👍 Great app
- 👍 Excellent tool
- 👍 Useful
- 👍 Perfect app
- 👍 Awesome!
- 👍 Does the job
- 👍 Highly recommended
- 👍 Easy to use
- 👍 Top Notch Utility
- 👍 Best app of its type
- 👍 Truckers essential tool
- 👍 Time saver

**Cons**

- 🐛 Ads even after buying
- 🐛 Paid for app but still has ads
- 🐛 Pro version has ads
- 🐛 Can't reinstall my purchased app

**Commonly reported bugs**

- Paid version has lost the ability to calculate future dates based on weeks
- Date selection uses a scroll wheel instead of keypad entry
- Unable to copy or share calculation results

**Most requested features**

- Add ability to change year for date time calculation
- Implement dark mode
- Add iPad version
- Add divide option in time calculator
- Add ability to calculate working days

## Recent user reviews (10 of 153)

All indexed reviews: https://appshunter.io/ios/app/date-and-time-calculator-pro/id582268389/reviews.md

### 5/5 — It works!

*2026-05-24*

A very simple app, but it works flawlessly every time I need it. Just be sure to check if it’s counting the first day or not using the toggle switch.

### 5/5 — 好

*2026-05-12*

好喜欢

### 5/5 — 软件计算准确

*2026-03-20*

这款软件计算准确好用，非常实用

### 2/5 — Stopped in development

*2026-02-21*

Upd: Response to the developer.

We are all constantly getting older. Is it really that difficult to implement dark theme support in the app? I'm sure it's not.
─────────
Low rating for 1) The lack of a dark theme, which today is simply shameful and unacceptable; 2) For the lack of a version for macOS; 3) For updates, which for a long time do not bring anything and do not fix anything, as if just deception to imitate the activities of the developer.

### 5/5 — Ads even after buying

*2026-02-21*

I paied for the app but im still getting Ads. Please fix.

Edit: developer responded. Thank you, i've got the paid app.

### 1/5 — Ads even after buying

*2026-02-08, version 1.14.0*

I paied for the app but im still getting Ads. Please fix.

### 5/5 — 毎日使います

*2025-11-07*

フリー版でも充分ですが、生活に役立つツールを提供してくれる作者へのリスペクト。

### 5/5 — Jumper Man ⛹🏽‍♂️

*2025-10-19, version 1.14.0*

This app is my go to gauge, for detailed, fine tuned, overview planning.

### 5/5 — Extremely Useful

*2025-10-18*

If you’re constantly looking at the clock to figure out WHEN to do WHAT then look no further. This is the best app to help me organize my hectic lifestyle. Thank you. Also I’d pay for a Dark Mode right now!!

### 5/5 — Great App

*2025-09-28, version 1.14.0*

Been a great and consistent app over the years of using it.

## Frequently asked questions about Date and Time Calculator Pro

### What does the Date and Time Calculator Pro app do?

This app allows you to calculate the exact time difference between any two dates and times, with precision down to the second. It can also help you determine a future or past date by adding or subtracting a specified duration.

### What are the key features of this calculator?

Key features include calculating the distance between any two times, determining the date after a given time, and calculating dates before or after a certain period. It offers second-level precision for all calculations.

### Is this app free to use?

Yes, the app is available for free. There are no in-app purchases or advertisements mentioned, indicating a completely free user experience.

### Who would find this app useful?

This app is useful for anyone who needs to track time intervals, such as for financial products, upcoming exams, or personal events. It's also helpful for planning and understanding durations.

## Version history (last 5 releases)

### 1.14.0 — 2025-04-16

[+] Bug fixes and performance improvements.

### 1.13.8 — 2025-04-11

[+] Bug fixes and performance improvements.

### 1.13.4 — 2024-11-18

[+] Bug fixes and performance improvements.

### 1.13.0 — 2024-03-12

[+] Bug fixes and performance improvements.

### 1.12.8 — 2024-02-28

[+] Bug fixes and performance improvements.

## Apps similar to Date and Time Calculator Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Date and Time Calculator](https://appshunter.io/ios/app/date-and-time-calculator/id552798167) | 4.7 (9,733) | Free | Utilities |
| [Time Calculator - Work Hours](https://appshunter.io/ios/app/time-calculator-work-hours/id565039079) | 4.7 (2,819) | Free | Utilities |
| [Date & Time Calculator +](https://appshunter.io/ios/app/date-and-time-calculator-plus/id1606610480) | 4.6 (112) | $0.99 | Utilities |
| [Hours Tracker: Time Calculator](https://appshunter.io/ios/app/hours-tracker-time-calculator/id1468092377) | 4.7 (80,581) | Free | Utilities |
| [Date Time Calculator - Tickr](https://appshunter.io/ios/app/date-time-calculator-tickr/id6469073541) | 5.0 (7) | Free | Utilities |
| [Countdown](https://appshunter.io/ios/app/countdown/id1403367428) | 4.8 (183,403) | Free | Utilities |

## More apps by 山 钟

- [Symbol Pad & Icons for Texting](https://appshunter.io/ios/app/symbol-pad-and-icons-for-texting/id486776216)
- [Symbol Pad Pro](https://appshunter.io/ios/app/symbol-pad-pro/id490451149)
- [繁体字转换器 - 简体字转换器](https://appshunter.io/ios/app/id537248858)
- [Emoji for Message - Text Maker](https://appshunter.io/ios/app/emoji-for-message-text-maker/id541879701)
- [Date and Time Calculator](https://appshunter.io/ios/app/date-and-time-calculator/id552798167)
- [Emoji for Message Pro](https://appshunter.io/ios/app/emoji-for-message-pro/id571949971)

All apps by 山 钟: https://appshunter.io/developer/1289109809

## Related topics

[the date calculator pro](https://appshunter.io/ios/topics/the-date-calculator-pro)

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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 2026-08-27.*