# Date Calculator: Day Counter — Workdays, add & subtract dates

> Calculate time intervals between dates and perform date arithmetic. (iPhone/iPad app by 阳 孙.)

- Source: https://appshunter.io/ios/app/date-calculator-day-counter/id1547262951 (this page in markdown: same URL + `.md`)
- Developer: [阳 孙](https://appshunter.io/developer/1518808403)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2021-01-05
- Data updated: 2026-10-08
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/date-calculator-day-counter/id1547262951/reviews.md

## What is Date Calculator?

Date Calculator answers two everyday questions fast: how many days are there between two dates, and what date is it after adding or subtracting a period?

DAYS BETWEEN TWO DATES
• Pick a start and an end date and see the gap as days, weeks, months and years
• An exact "2 years 6 months 23 days" breakdown, not rough 30-day months
• Workdays (Mon–Fri) and weekend days counted for you
• Optional "count the end day too" for inclusive counting
• Hours, minutes and seconds, plus one-tap swap and Today shortcuts

ADD OR SUBTRACT TIME
• Add or subtract years, months, weeks and days from any date
• Results update live as you type, with the weekday, the day of the year and how far away it is
• Presets for 1 week, 30 days, 90 days, 100 days, 6 months and 1 year
• Workdays mode skips weekends, handy for deadlines, delivery times and notice periods (public holidays are not excluded)
• Month ends are handled properly: 29 Feb + 1 year = 28 Feb, 31 Jan + 1 month = 28 Feb

Clean native design, dark mode, English and Simplified Chinese, iPhone and iPad. Share any result with one tap.

The app is free with ads.

## Key features

- Calculate date intervals
- Add/subtract dates
- Support for days, weeks, months, years
- Support for hours, minutes, seconds
- iOS 14 design style
- Dark mode support

## Is Date Calculator safe?

Not enough ratings yet to assess Date Calculator.

## Is Date Calculator legit?

Date Calculator: Day Counter appears to be a legitimate app. The AppsHunter Legitimacy Score for Date Calculator is 90 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/date-calculator-day-counter/id1547262951/reviews.md

### 5/5 — 工程人的好工具

*2021-05-26*

点赞👍

## Frequently asked questions about Date Calculator

### What is the short name for Date calculator asst?

The short common name for Date calculator asst is 'Date calculator'.

### How does Date calculator asst calculate intervals?

Date calculator asst calculates the interval between two dates, supporting calculations for days, weeks, months, years, hours, minutes, and seconds.

### Can Date calculator asst add or subtract time?

Yes, Date calculator asst allows you to add and subtract dates, with the flexibility to independently add or subtract any cycle.

### What devices does Date calculator asst support?

Date calculator asst is available for iPhone, iPad, and iPod.

### What is the age rating for Date calculator asst?

Date calculator asst has an age rating of 4+.

### Does Date calculator asst have ads?

Yes, Date calculator asst contains advertisements.

### When was Date calculator asst last updated?

Date calculator asst was last updated on January 31, 2021, with version 1.1.

### What is the interface design of Date calculator asst?

Date calculator asst features a concise and fresh interface, developed using SwiftUI with an iOS 14 design style, and natively supports dark mode.

## Version history (last 3 releases)

### 2.0 — 2026-10-08

Date Calculator 2.0 is a full redesign.
• New look with big results and a live preview
• Exact years / months / days between dates (no more 30-day months)
• Workdays and weekend days, and an option to count the end day
• Add or subtract years, months, weeks and days, with presets
• Workdays mode that skips weekends
• Fixes: results now update as you type; month-end dates are handled correctly
• Dark mode, iPad layout, share results

### 1.1 — 2021-01-31

bug fix

### 1.0 — 2021-01-05

No release notes.

## Apps similar to Date Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [日期计算器：时间、天数计算器](https://appshunter.io/ios/app/id6748047284) | — | Free | Utilities |
| [Date Calculator - Days & Age](https://appshunter.io/ios/app/date-calculator-days-and-age/id6772379847) | — | Free | Utilities |
| [Date Calculator - DateMath](https://appshunter.io/ios/app/date-calculator-datemath/id6773030545) | 5.0 (1) | Free | Utilities |
| [EasyDate: Date Calculator](https://appshunter.io/ios/app/easydate-date-calculator/id1366565701) | 4.2 (18) | Free | Utilities |
| [BearFuel](https://appshunter.io/ios/app/bearfuel/id1226900012) | 3.0 (2) | Free | Utilities |
| [Date Calculator, Days Calc](https://appshunter.io/ios/app/date-calculator-days-calc/id1582411955) | 4.5 (131) | Free | Utilities |

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All apps by 阳 孙: https://appshunter.io/developer/1518808403

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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 2026-10-08.*