# DayCalc - Note Calculator — Calculator & Unit Converter > Calculator and unit converter with notes, custom units, and themes. (iPhone/iPad app by 良峰 侯.) - Source: https://appshunter.io/ios/app/daycalc-note-calculator/id661506264 (this page in markdown: same URL + `.md`) - Developer: [良峰 侯](https://appshunter.io/developer/654444245) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.70/5 from 126 App Store ratings · 155 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 170 MB - Languages: Russian, American English, Hungarian, Dutch, Danish, European Spanish, Italian, Korean, German (Germany), Polish and 5 more - Released: 2013-06-20 - Data updated: 2026-08-29 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/daycalc-note-calculator/id661506264/reviews.md ## What is DayCalc? DayCalc is an easy to use, beautifully packaged calculator and Unit Converter, includes standard, scientific and fractions calculator, best calculator for your iPad, iPhone and Apple Watch! Calculator: - Live voice calculator - Add notes to history of your calculations, and you can share - Choose between a basic calculator or scientific calculator with more than 30 scientific operations - Use both calculators in portrait or landscape mode (both iPhone and iPad), and split screen support for iPad - Auto adjust height of the history list, no matter how long the calculation process can be displayed in full - Allows locking of calculation history, cannot be deleted and modified after locking - Full watchOS 4 and later support - Support iOS 9 and later spotlight search - Support Dark Mode Unit Converter: - Over 600+ units in 20 categories. - Allows you to add your own unit data, make your own unit converter that meets all your requirements. - Support more than 150 kinds of currency, conversion exchange rate automatic updates - The simplest way to create and use favorite lists. - Add the constant value of your frequently used, it can easily and quickly reused. - Flexible search feature that lets you quickly find what you want the unit and automatically saves your search history. Basic functions: - 50+ beautiful themes for you to choose - View and edit a history of your calculations on the History Panel - Multiple Button sounds, and button sound is mutable URL schemes: HCDayCalc:// Download it now and feel of this calculator is how classic ## Key features - Standard, scientific, and fraction calculator - Live voice calculator - Add notes to calculations - Over 600 units in 20 categories - Custom unit creation - Automatic currency exchange rate updates - 50+ themes and dark mode support ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Complete Pack | $4.99 | one-time | | Remove Ads | $3.99 | one-time | | Constants Pack | $0.99 | one-time | | Custom Unit Pack | $1.99 | one-time | ## What do users think of DayCalc? Overall sentiment: positive **Pros** - 👍 Easy to use and convenient - 💯 All-in-one calculator with multiple functions - ✨ Customizable themes and backgrounds - 🧮 Supports fraction calculations - 📈 History and memory functions available - 🔊 Optional sound effects for typing - 🔄 Back button for correcting mistakes - 💡 Unit conversion features - ✅ Ad-free option available - 👌 Simple and effective design - 👨‍🏫 Useful for homework and daily tasks - 🌟 Makes math fun - 🚀 Fast and responsive - 🖥️ Good for iPad and other devices - 💡 Clear display of calculations - 👍 Large buttons and font size - 🔄 History is saved and retrievable - 💡 Useful for diabetes calculations **Cons** - ⚠️ Ads can be intrusive - 🐛 Some users experience update issues - ❌ Weight conversions not always available - 🔊 Unwanted sound effects - ❓ Ad-free cost unclear for cross-platform - 📉 Battery consumption concerns - 🚫 Data collection concerns - 🪲 Glitches and bugs reported - ⏳ Slow startup times reported - 🔄 Some features not working after updates - ❓ Currency conversion can be confusing - 🚫 Some features not available on Apple Watch - ❌ Paid version still shows ads briefly - 🐛 Specific calculation errors reported (e.g., percentage) - 🐛 App crashes reported - 🚫 Issues with installing after removal - 🐛 Issues with specific versions/updates - 🐛 Display issues (e.g., underlines) **Commonly reported bugs** - Update issues, stuck in update loop - Cannot install after removal - Weight conversion not showing - Keys making sound unexpectedly - App not working after professional version update - App crashes after update - Stuck on updating forever - Calculator results in errors (e.g., 1000*10%) - App keeps running in the background, draining battery - Cannot change themes due to network error - Ads still appear after purchasing ad removal - App not opening after install - M+ M- bug - Text/numbers/symbols have underlines - Standard version limits typing to four digits - App not starting on Apple Watch **Most requested features** - Add Pi button - Improve currency conversion navigation - iCloud support for syncing across devices - Add background running feature - Ability to change app icon - Add more theme options - Allow notes to show on the main screen - Email entire calculation history - Change layout (move function buttons) - Allow sound to be enabled in silent mode ## Recent user reviews (10 of 155) All indexed reviews: https://appshunter.io/ios/app/daycalc-note-calculator/id661506264/reviews.md ### 5/5 — 定数計算ができる *2026-06-23* iOS18からCボタンがなくなり、定数計算もできなくなったのが不都合でコチラを利用させてもらっています。 上記に加えレイアウトは変えられるし、使うたびに広告が出ることもないし、数ある計算アプリの中から見つけられてよかったと思っています。 ### 5/5 — 良い *2026-03-23* 使い勝手が良く使いやすくてこれしか使ってない ### 4/5 — Solid app that could do with a few enhancements *2026-01-02* Solid app though a bit over wrought for its intended purpose. Ad-free cost is also not clear as it seems purchasing on Mac App Store does not provide IOS version ? ### 3/5 — WEIGHT Conversion *2025-11-26, version 12.9* 1) My unit converter does NOT show weight conversions: why? 2) 11/25/25 Suddenly keys started making sound when i type numbers. I don’t want sound and don’t know what to do! Do you check these notes? ### 3/5 — アップデート出来ない *2025-10-31* 延々とアップデートを繰り返していますけど、なんでしょうかね？ **Developer response:** Hello, it has now been successfully updated/installed. Please try again. Thank you. ### 1/5 — Stuck on the latest update *2025-10-31* Stuck on updating forever. Remove and after that cannot install it anymore. **Developer response:** Hello, it has now been successfully updated/installed. Please try again. Thank you. ### 5/5 — Great Design. *2025-10-22* Simple, with all the tools I need in one app. love the backgrounds. Makes math fun. ### 5/5 — 학원숙제할때 진짜 도움 👍🏻👍🏻👍🏻👍🏻👍🏻 *2025-05-25* 모르겠어요 그냥 좋아요 백분율도있고 분수 계산도 되서 숙제할때 계산기로 하기좋아욬ㅋ ### 5/5 — 사랑해요 *2025-02-24* 너무 조아용^^ 숙제 할 때 분수계산기도 나이스👍 ### 5/5 — 使いやすい *2025-01-31* とても使いやすい ## Frequently asked questions about DayCalc ### What does DayCalc - Note Calculator do? DayCalc is a versatile app that functions as both a calculator and a unit converter. It offers various calculation modes, including standard, scientific, and fractions, and provides conversion for over 600 units across 20 categories. It also allows users to add notes to their calculations and customize units. ### What are the key features of this calculator and unit converter? Key features include a live voice calculator, the ability to add and share notes with calculations, standard and scientific calculator modes with over 30 operations, and support for portrait/landscape modes. The unit converter boasts over 600 units, custom unit creation, automatic currency exchange rate updates, and favorite lists. ### How much does DayCalc - Note Calculator cost? The app is available for free with in-app purchases. This means you can download and use the basic functionalities without charge, but certain advanced features or customization options may require a purchase. ### What devices is DayCalc - Note Calculator compatible with? This app is designed for Apple devices, including iPad, iPhone, and Apple Watch. It supports watchOS 4 and later, and iOS 9 and later. It also offers split-screen support for iPad and Spotlight search functionality. ### What are some common use cases for DayCalc - Note Calculator? Common use cases include performing everyday calculations, complex scientific computations, converting units for cooking or travel, managing currency conversions with updated rates, and keeping track of calculations with added notes for future reference. Its customization options make it adaptable to specific user needs. ## Version history (last 5 releases) ### 13.7 — 2026-08-17 + Refinement of functions ### 13.6 — 2026-06-26 + Bug fixes and stability improvements ### 13.5 — 2026-06-14 + Refinement of functions ### 13.4 — 2026-05-21 + Refinement of functions ### 13.3 — 2026-05-08 + Refinement of functions ## Apps similar to DayCalc | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (10,020) | Free | Utilities | | [Calculator⁼](https://appshunter.io/ios/app/calculator/id487127942) | 4.6 (358,262) | Free | Utilities | | [Basic Calculator: Classic Calc](https://appshunter.io/ios/app/basic-calculator-classic-calc/id430271248) | 4.8 (3,192) | Free | Utilities | | [Calculator₊](https://appshunter.io/ios/app/calculator/id398129933) | 4.7 (1,726,794) | Free | Utilities | | [Color Calculator-smart&cute](https://appshunter.io/ios/app/color-calculator-smart-and-cute/id1492634383) | 4.7 (15,610) | Free | Utilities | | [Haseba Calculator](https://appshunter.io/ios/app/haseba-calculator/id1121281655) | 4.6 (3,795) | Free | Utilities | ## More apps by 良峰 侯 - [Calculator Easy HD](https://appshunter.io/ios/app/calculator-easy-hd/id448246366) - [Unit Converter Pro HD.](https://appshunter.io/ios/app/unit-converter-pro-hd/id458584668) - [Unit Converter HD.](https://appshunter.io/ios/app/unit-converter-hd/id481973377) - [Currency Exchange](https://appshunter.io/ios/app/currency-exchange/id494172851) - [Level HD.](https://appshunter.io/ios/app/level-hd/id510249014) - [Toolkit](https://appshunter.io/ios/app/toolkit/id577678277) All apps by 良峰 侯: https://appshunter.io/developer/654444245 --- *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 2026-08-29.*