# Custom Unit Converter - MyUnit — For Engineers \| Flow, Pressure > For Engineers | Flow, Pressure (iPhone/iPad app by Tsuyoshi Ninomiya.) - Source: https://appshunter.io/ios/app/custom-unit-converter-myunit/id6752657586 (this page in markdown: same URL + `.md`) - Developer: [Tsuyoshi Ninomiya](https://appshunter.io/developer/1840418816) - Category: Education, Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.2 · 12 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2025-09-29 - Data updated: 2026-07-18 - User reviews in markdown: https://appshunter.io/ios/app/custom-unit-converter-myunit/id6752657586/reviews.md ## What is Custom Unit Converter? MyUnit is a flexible unit conversion app that lets you freely add your own categories and units. In addition to standard conversions such as length, area, volume, temperature, weight, and speed, MyUnit also supports specialized units used in engineering, science, research, and business, including flow rate, pressure, vacuum, energy, power, force, resistance, frequency, and more. Many unit conversion apps only support pre-installed units. This can be inconvenient when the unit you need is missing or when the app does not fit your workflow. MyUnit solves this by allowing you to create your own categories and add the units you need. For example, you can create categories such as Pressure, Flow Rate, Temperature, or Vacuum, and register units such as Pa, psi, sccm, slpm, Torr, and more. MyUnit also supports multi-step calculations. In addition to simple multiplication-based conversion, you can create flexible conversion rules using ×, ÷, +, −, and ^. This makes it easier to handle conversions that cannot be expressed with only one simple factor. If you often calculate special formulas manually, MyUnit can help you save time. With this update, MyUnit now supports CSV export. You can export registered categories, units, and conversion data in CSV format. This makes it easier to check, organize, record, and share the data you created in the app. CSV export is useful for reviewing unit lists in spreadsheet software, organizing conversion rules, keeping research or work records, sharing data, and creating documents. Main Features 1. Add categories and units freely Create your own categories and register the units you need. 2. Multi-step calculations Create custom conversion rules using ×, ÷, +, −, and ^. 3. CSV export Export registered categories, units, and conversion data as CSV files. 4. Automatic conversion Enter one value and other units in the same category are automatically calculated. 5. Easy copy operation Copy conversion results quickly for reports, notes, emails, documents, and spreadsheets. 6. Rearrange categories and units Place frequently used categories and units at the top for faster access. 7. Useful for technical fields Suitable for engineering, science, research, experiments, design, development, evaluation, maintenance, and on-site checks. 8. Useful for everyday conversion Also convenient for daily conversions such as length, temperature, weight, volume, area, and speed. Recommended For ・People who want to add their own categories and units ・People who handle engineering, scientific, or technical units ・Researchers, students, engineers, technicians, and developers ・People who check overseas specifications or technical documents ・People who want to manage conversion data with CSV files Use Cases Students and researchers Useful for assignments, reports, experiments, research data, and unit conversion records. Engineers and technicians Useful for checking flow rate, pressure, vacuum, power, energy, equipment specifications, sensor specifications, and design values. Data management and sharing Export categories, units, and conversion data as CSV files and use them in spreadsheet software for review, records, and sharing. Supported Category Examples Temperature, length, area, volume, angle, weight, time, speed, power, energy, electric charge, frequency, data transfer rate, electric current, resistance, acceleration, force, flow rate, pressure, and more. Why Choose MyUnit ・Create your own categories ・Use ×, ÷, +, −, and ^ ・Export data in CSV format ・Automatically convert multiple units at once ・Rearrange categories and units ・Useful for work, research, study, and daily life MyUnit is not just a unit conversion app. It lets you customize categories, units, and conversion rules to match your needs. Premium Features ・Ad-free experience Terms of Use:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy:http://244div.com/privacy-policy/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | MyUnit | $0.49 | per month | ## Version history (last 5 releases) ### 4.3 — 2026-07-15 • Made it easier to add new units.
 • You can now quickly access sharing, unit management, and unit creation from the conversion screen header.
 • Newly added units now appear at the top of the list.
 • Improved unit reordering and deletion.
 • Improved overall stability. ### 4.2 — 2026-07-07 ・Added a review request feature to help improve the app experience. ・Made minor improvements and internal adjustments. ### 4.1 — 2026-06-13 Fixed some bugs. ### 4.0 — 2026-06-09 Added CSV export support. You can now export registered categories, units, and conversion data in CSV format. This can be used for checking data in spreadsheet software, organizing business or research data, and sharing information. Other minor improvements and stability enhancements have also been made. ### 3.3 — 2026-05-19 ・Improved usability on some screens ・Enhanced overall app performance ・Fixed minor issues ## Apps similar to Custom Unit Converter | App | Rating | Price | Category | | --- | --- | --- | --- | | [MAKE10 - Kids Game Collection](https://appshunter.io/ios/app/make10-kids-game-collection/id6760253962) | — | Free | Education | | [MyPhrase](https://appshunter.io/ios/app/myphrase/id6754671732) | — | Free | Education | | [高圧ガス製造保安責任者-第二種冷凍機械-試験対策-国家資格](https://appshunter.io/ios/app/id6757654160) | — | Free | Education | | [KujiraTimer](https://appshunter.io/ios/app/kujiratimer/id1402988661) | 5.0 (1) | Free | Education | | [天津中考英语词汇 AI批改英语作文](https://appshunter.io/ios/app/ai/id1582982160) | — | Free | Education | | [Aevo IHK App AdA-Schein](https://appshunter.io/ios/app/aevo-ihk-app-ada-schein/id6763579448) | — | Free | Education | --- *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 2026-07-18.*