# Date & Time Calculator - Quick and Simple > Utility app for calculating date and time durations and additions. (iPhone/iPad app by Takahiro Kusano.) - Source: https://appshunter.io/ios/app/date-and-time-calculator-quick-and-simple/id1114414986 (this page in markdown: same URL + `.md`) - Developer: [Takahiro Kusano](https://appshunter.io/developer/1114414985) - Category: Utilities, Business - Price: Free - Rating: 3.70/5 from 3 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 26 MB - Languages: American English, Japanese - Released: 2016-05-16 - Data updated: 2026-06-04 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/date-and-time-calculator-quick-and-simple/id1114414986/reviews.md ## What is Date & Time Calculator? This is a calculator of the date and time. Calculate the number of days, years and hours from the special day, and Calculate the number of days between two dates. Features: -Duration between two date -Duration between two date and time -Duration between two time -Add to a date -Add to a time -Add to a date and time -Settings ※ There is some paid content ## Key features - Duration between two dates - Duration between two date and time - Duration between two times - Add to a date - Add to a time - Add to a date and time ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/date-and-time-calculator-quick-and-simple/id1114414986/reviews.md ### 5/5 — 使いやすい *2024-06-22, version 1.2.15* 有料のアドオンは購入できないようです。 広告消したいのですが。 ### 1/5 — Ads…ads…ads….what a waste *2021-12-23* Loud obnoxious ads…. ### 5/5 — 新時代への対応 *2019-04-26, version 1.2.15* 令和に変わります。バージョンアップお願いします。 ### 5/5 — Great App - However.... *2018-12-18* Be good if it can use the phones region setting to detect date format used, or if you can manually set the date format Thanks! ### 3/5 — 直して下さい… *2018-11-27, version 1.2.15* 買い増したiPhoneSEのiOSバージョンが11.4.1だったのですが、このアプリをダウンロードし開いてみると文字が 0y0m0dといった表記になってしまいました。 普段からお世話になっているアプリで、使い易く、お気に入りだったので課金して使用していたのすが、表記がおかしくなってしまい非常に残念です。 長いことアップデートされていませんが、修正していただけませんでしょうか… よろしくお願いします。 ### 5/5 — 良い *2018-06-29, version 1.2.15* 計算する初日を含むことができ、助かります。 欲を言えば、何日後だけでなく、何日前( - )も計算出来るようアップデートしてください。 ### 5/5 — Best app *2017-11-22* This is the best app My suggestion is below. We can not read details because of yellow portion. Keep it black and white so that we can read it easily. ### 5/5 — 使いやすい！ *2017-04-27, version 1.2.14* 類似したアプリを有料購入してしまったのですが、アップデートがされておらず、将来的に使えなくなることに不安を感じておりました。こちらのアプリの方が使いやすく、前述のアプリより先に見つけられなかったことが残念です。しばらく使ってみて、課金も検討したいと思います。仕事柄よく使うので、アップデートよろしくお願いします ### 4/5 — 直感的に使えます *2016-11-06, version 1.2.11* 仕事で「〇/〇の〇日後」や「〇/〇〜〇/〇の日数」の計算、また、1/1を開始日にしてジュリアン日付を求めることを頻繁に行います。操作方法がシンプルで直感的に使えるので重宝しています。欲を言えば、「日付計算＋日数」で、日数にマイナスを指定できると、「〇日前」の計算もできてさらに便利だと感じました。 ### 1/5 — 日数が合っていません *2016-08-31, version 1.2.8* このアプリ内では昭和63年と平成元年の差は６２年あるらしいです。 ## Frequently asked questions about Date & Time Calculator ### What is the rating for Date & Time Calculator? Date & Time Calculator has a rating of 3.7 stars based on 3 user ratings. ### Is Date & Time Calculator free to use? Yes, Date & Time Calculator is available for free. ### What devices does Date & Time Calculator support? Date & Time Calculator is supported on iPhone and iPod devices. ### What is the age rating for Date & Time Calculator? Date & Time Calculator has an age rating of 4+. ### When was Date & Time Calculator last updated? The latest version of Date & Time Calculator was released on June 7, 2017. ### Does Date & Time Calculator have ads? No, Date & Time Calculator does not contain advertisements. ### Are there any paid features in Date & Time Calculator? The description mentions that there is some paid content available within Date & Time Calculator. ### What are the main functions of Date & Time Calculator? Date & Time Calculator allows users to calculate the duration between two dates and times, and also add time to existing dates and times. ## Version history (last 5 releases) ### 1.2.15 — 2017-06-07 This app has been updated by Apple to display the Apple Watch app icon. - Library updated ### 1.2.14 — 2017-04-20 - Library updated ### 1.2.13 — 2017-02-13 - Miner Bug Fixes ### 1.2.12 — 2017-01-17 - Miner Bug Fixes ### 1.2.11 — 2016-10-26 - Miner Bug Fixes ## Apps similar to Date & Time Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [UnitConverter byNSDev](https://appshunter.io/ios/app/unitconverter-bynsdev/id1229121492) | — | Free | Utilities | | [NeoCalcs Lite - Calculator](https://appshunter.io/ios/app/neocalcs-lite-calculator/id855293368) | — | Free | Utilities | | [日付時間計算](https://appshunter.io/ios/app/id949261920) | — | Free | Utilities | | [Date & Time Calculator Counter](https://appshunter.io/ios/app/date-and-time-calculator-counter/id1547673028) | 4.5 (21) | Free | Utilities | | [Number of Days Calculator](https://appshunter.io/ios/app/number-of-days-calculator/id1520146539) | — | Free | Utilities | | [Date and Time Checker](https://appshunter.io/ios/app/date-and-time-checker/id1495935338) | 5.0 (1) | Free | Utilities | ## More apps by Takahiro Kusano - [Desktop Calculator C - Excellent & Convenient](https://appshunter.io/ios/app/desktop-calculator-c-excellent-and-convenient/id1118457662) - [Dual Display Calculator - Simple and Easy-to-use](https://appshunter.io/ios/app/dual-display-calculator-simple-and-easy-to-use/id1120989361) All apps by Takahiro Kusano: https://appshunter.io/developer/1114414985 ## Related topics [aqvita](https://appshunter.io/ios/topics/aqvita) --- *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 2026-06-04.*