# Kalc — Quick Calc for Daily Use > Simple unit converter, calculator, and world clock for daily use. (iPhone/iPad app by YUTA OKAJIMA.) - Source: https://appshunter.io/ios/app/kalc/id610991936 (this page in markdown: same URL + `.md`) - Developer: [YUTA OKAJIMA](https://appshunter.io/developer/610991939) - Category: Utilities, Productivity - Price: Free - Rating: 4.70/5 from 3 App Store ratings · 26 written reviews indexed - Age rating: 4+ - Requires: iOS 13.4 · 24 MB - Languages: American English - Released: 2013-03-07 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/kalc/id610991936/reviews.md ## What is Kalc? Unit Converter, Calculator, and World Clock. The simple & clean UI to get the results you need for everyday use as quickly as possible. ## Key features - Unit converter - Calculator - World clock - Simple UI - Quick results ## Recent user reviews (10 of 26) All indexed reviews: https://appshunter.io/ios/app/kalc/id610991936/reviews.md ### 4/5 — Amazing app, but you took away a key feature *2024-11-20* I’m a big fan of your app and have relied on it for years— However, in one of your more recent updates you removed the option to view last calculations. Now I rely on screenshots of calculations to remember what I’ve calculated in the last. Please bring it back! **Developer response:** Thank you for being a long-time fan of the app! The feature to view your last calculations is still available—swipe left or right on the calculation result in the input area, and you'll see them appear in the list at the top. For more guidance, you can also visit the tips page at https://kalc.app/tips/. If this isn’t the feature you meant, please feel free to contact me at kalctools@gmail.com with more details, and I’ll gladly assist further! ### 5/5 — My swiss army knife for travel *2024-05-28* Recent update in unit converter shows feet and inches, which is super useful for measuring my body fat at the gym. I also love this app comes with Easter Eggs customizing colors by swipe up screen and slide palette. ### 5/5 — Minimalism in beautiful design *2024-04-30* This beautiful app materializes minimalism and thoughtful functionality in beautiful design. As a person from metric units country, this is one of app used for almost everyday. ### 4/5 — I love this app! *2023-12-12* Please update for iOS 17! I use this for all my accounting work! I’ve been using this since 2013… :) lovely app ### 3/5 — No minus *2019-02-06* No minus on calculator. I wanted to find out what -30 Celsius was in Fahrenheit, can’t do it ### 4/5 — Thanks for the update and tip! *2017-03-17* This is a great little app. Very easy to use. While I still like this app, it needs an update, iOS keeps telling me im the app is being inefficient ### 5/5 — The best conversion app *2015-08-11* This app is really easy to use! Love it. ### 5/5 — 非常棒！ *2015-05-01* 反正我就是要简单的单位换算，ui也很方便 ### 5/5 — Beautiful and functional *2014-06-07, version 1.3.3* Beautifully designed and built app, a pleasure to use ### 5/5 — Gorgeous *2014-04-08* Gorgeous app! ## Frequently asked questions about Kalc ### What devices does Kalc support? Kalc is available for iPhone and iPod devices. It was first released on March 7, 2013, and its latest version is 2.1.0, updated on October 15, 2024. ### What is the age rating for Kalc? Kalc has an age rating of 4+, making it suitable for a wide range of users. The app focuses on providing essential utility functions. ### How often is Kalc updated? The app was last updated on October 15, 2024, with version 2.1.0. This indicates regular maintenance and potential feature additions by the developer, YUTA OKAJIMA. ### What are the main functions of Kalc? Kalc provides three core functions: a unit converter for various measurements, a standard calculator for arithmetic operations, and a world clock to check times in different cities. ### Is Kalc free to use? Yes, Kalc is completely free to download and use. It does not feature in-app purchases or advertisements, offering a clean user experience. ### What do users think of Kalc? Kalc has received a high rating of 4.7 stars from 3 ratings, suggesting positive user sentiment regarding its functionality and ease of use. ### Can Kalc be used offline? As Kalc is a utility app focused on calculations and time, it is designed to function offline. Internet connectivity is not required for its core features. ## Version history (last 5 releases) ### 2.1.0 — 2024-10-15 Bug fixes and small improvements. ### 2.0.9 — 2024-06-15 Bug fixes and small improvements. ### 2.0.8 — 2024-06-04 Bug fixes and small improvements. ### 2.0.7 — 2024-06-03 Bug fixes and small improvements. ### 2.0.6 — 2024-06-01 Bug fixes and small improvements. ## Apps similar to Kalc | App | Rating | Price | Category | | --- | --- | --- | --- | | [STL Maker](https://appshunter.io/ios/app/stl-maker/id1444230836) | 3.3 (24) | $24.99 | Utilities | | [Voice-calculator](https://appshunter.io/ios/app/voice-calculator/id6502683026) | — | Free | Utilities | | [Calculator ×](https://appshunter.io/ios/app/calculator/id1039645790) | 4.5 (144) | Free | Utilities | | [UniCalc](https://appshunter.io/ios/app/unicalc/id846802646) | — | $0.99 | Utilities | | [Pizza - price calculator](https://appshunter.io/ios/app/pizza-price-calculator/id1425063901) | 5.0 (1) | Free | Utilities | | [Akulometrics](https://appshunter.io/ios/app/akulometrics/id1580171165) | — | Free | Utilities | --- *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 2026-06-01.*