# Date and Time Calculator > Calculate time differences and future/past dates with second precision. (iPhone/iPad app by 山 钟.) - Source: https://appshunter.io/ios/app/date-and-time-calculator/id552798167 (this page in markdown: same URL + `.md`) - Developer: [山 钟](https://appshunter.io/developer/1289109809) - Category: Utilities - Price: Free - Rating: 4.70/5 from 9,733 App Store ratings · 606 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 18 MB - Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan) - Released: 2012-10-09 - Data updated: 2026-08-27 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/date-and-time-calculator/id552798167/reviews.md ## What is Date and Time Calculator? 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 between any two dates - Second-level precision - Calculate future dates - Calculate past dates - Period time calculation ## What do users think of Date and Time Calculator? Overall sentiment: neutral **Pros** - 💡 Helpful for tracking dates and time - 👍 Simple and easy to use - 🚀 Accurate calculations - 🚀 Useful for various purposes (medication management, work timelines, etc.) **Cons** - 🐛 Ads are intrusive and difficult to close - 🐛 Compatibility issues on iPad - 🐛 Bugs with date/time calculations - 🐛 Language issues with ads **Commonly reported bugs** - Date/time calculations not always accurate - Inability to close ads - Compatibility issues on certain devices **Most requested features** - Option to calculate business days - Ability to save frequently used dates - 24-hour time format - Improved user interface ## Recent user reviews (10 of 606) All indexed reviews: https://appshunter.io/ios/app/date-and-time-calculator/id552798167/reviews.md ### 1/5 — Was great, but now just an ad *2026-08-18, version 1.14.0* No longer works. Just sends me to ads. Really sad because it was a great app. Seriously they suck. ### 5/5 — Helpful *2026-08-15, version 1.14.0* Very helpful and user friendly. ### 1/5 — Hacked *2026-08-03, version 1.14.0* This has been hacked. ### 5/5 — Awesome thanks *2026-07-30, version 1.14.0* This continues to be a great tool for case reviews. ### 1/5 — Spam Machine *2026-07-24, version 1.14.0* Want to quickly calculate and know how many days between two dates? Well, look elsewhere. App takes a good amount of time to load and when it does it's to see an advertisement. ### 5/5 — Good application *2026-07-17* It is very useful and easy to use ### 3/5 — Frustrating Ads *2026-07-13, version 1.14.0* I understand the need for an advertisement when an app is free. However, some ads stay up far too long and prevent me from using the app. There needs to be better control and time limits added to long I just wait to close out the advertisement. I am seeking other sites or apps to use instead. ### 5/5 — Night mode *2026-07-06, version 1.14.0* Please create night mode! ### 5/5 — THE BEST *2026-07-06, version 1.14.0* THE BEST ### 1/5 — 広告 *2026-06-25* あまりにもしつこい、 ## Frequently asked questions about Date and Time Calculator ### What does the Date and Time Calculator app do? This application allows you to calculate the precise duration between any two given dates, down to the second. It can also determine future or past dates based on a specified period. ### What are the key features of this calculator? Key features include calculating the exact time distance between any two points in time, down to the second. It also offers functionality to find the date before or after a certain period, useful for planning and tracking. ### Is this app free to use? Yes, the app is free to use. However, it does display advertisements as part of its monetization model. ### What kind of events or calculations is this app useful for? This app is useful for a variety of purposes, such as determining the number of days until a holiday like Christmas, calculating the time remaining until an important exam, or tracking the expiration of financial products with specific durations. ## Version history (last 5 releases) ### 1.14.0 — 2025-04-14 [+] Bug fixes and performance improvements. ### 1.13.8 — 2025-04-10 [+] Bug fixes and performance improvements. ### 1.13.6 — 2024-11-19 [+] Bug fixes and performance improvements. ### 1.13.4 — 2024-11-11 [+] Bug fixes and performance improvements. ### 1.13.2 — 2024-10-23 [+] Bug fixes and performance improvements. ## Apps similar to Date and Time Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Time Calculator - Work Hours](https://appshunter.io/ios/app/time-calculator-work-hours/id565039079) | 4.7 (2,819) | Free | Utilities | | [Date and Time Calculator Pro](https://appshunter.io/ios/app/date-and-time-calculator-pro/id582268389) | 4.8 (947) | $0.99 | Utilities | | [Hours Tracker: Time Calculator](https://appshunter.io/ios/app/hours-tracker-time-calculator/id1468092377) | 4.7 (80,581) | Free | Utilities | | [Hours Minutes Calculator Lite](https://appshunter.io/ios/app/hours-minutes-calculator-lite/id543277853) | 4.6 (2,954) | Free | Utilities | | [Countdown](https://appshunter.io/ios/app/countdown/id1403367428) | 4.8 (183,403) | Free | Utilities | | [calculator HD⁻](https://appshunter.io/ios/app/calculator-hd/id1485888099) | 4.5 (2,496) | 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) - [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 [day calculator](https://appshunter.io/ios/topics/day-calculator) · [calendar calculator free](https://appshunter.io/ios/topics/calendar-calculator-free) · [date calculator](https://appshunter.io/ios/topics/date-calculator) · [time and date calculator](https://appshunter.io/ios/topics/time-and-date-calculator) · [time and date calculator app](https://appshunter.io/ios/topics/time-and-date-calculator-app) · [calendar week calculator](https://appshunter.io/ios/topics/calendar-week-calculator) · [date wheel date calculator](https://appshunter.io/ios/topics/date-wheel-date-calculator) · [date calculation](https://appshunter.io/ios/topics/date-calculation) · [date calculator app](https://appshunter.io/ios/topics/date-calculator-app) · [the date calculator pro](https://appshunter.io/ios/topics/the-date-calculator-pro) · [date calendar calculator](https://appshunter.io/ios/topics/date-calendar-calculator) · [date calculation assistant](https://appshunter.io/ios/topics/date-calculation-assistant) · [pipper dating s.r.o.](https://appshunter.io/ios/topics/pipper-dating-s-r-o) · [rxdatecalc](https://appshunter.io/ios/topics/rxdatecalc) · [alltimecalc](https://appshunter.io/ios/topics/alltimecalc) · [time difference calculator](https://appshunter.io/ios/topics/time-difference-calculator) · [date calculator pw](https://appshunter.io/ios/topics/date-calculator-pw) · [week counter](https://appshunter.io/ios/topics/week-counter) · [88 days calculator](https://appshunter.io/ios/topics/88-days-calculator) · [weekdaywidget](https://appshunter.io/ios/topics/weekdaywidget) --- *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.*