# Calculator S.L.U.Y.S+ — Tree Structured yet simple. > Tree Structured yet simple. (iPhone/iPad app by ImagineSpark Inc..) - Source: https://appshunter.io/ios/app/calculator-sluys-plus/id1517195069 (this page in markdown: same URL + `.md`) - Developer: [ImagineSpark Inc.](https://appshunter.io/developer/1517195068) - Category: Utilities, Productivity - Price: $1.99 - Age rating: 4+ - Requires: iOS 15.5 · 3 MB - Languages: English, Japanese - Released: 2020-06-10 - Data updated: 2026-06-28 - User reviews in markdown: https://appshunter.io/ios/app/calculator-sluys-plus/id1517195069/reviews.md ## What is Calculator S.L.U.Y.S+? Entrust daily usual calc to S.L.U.Y.S! Simple calculator that always performs binary operations. Haven't you experienced? Problem when calc like... 1+2x3=7 Calc S.L.U.Y.S calc like.. 1+2x3=9 Simple, easy to use calc App nice for daily usual calc like consumption tax. Save up to 50 calc progressions and change part of it later. Useful for calculate shopping where the unit price and quantity change little by little each time. Performs two-items calculations with tree-structures in easy operation. Calc progression display, and “Go back” the progression. “Structured calc” in easy operation. “Calc Unit” 2 consumption tax rates. Input order calculation. Not Normal arithmetic order. Always operate on the calculation results up to immediately before. Calc Units ･ Handle “Calc Unit” which is calc progression before pressing “=“. ･ Re-calc “Calc Unit” with correction. ･ Copy-Paste “Calc Unit” with Text format data. ･ Save “Calc Unit” capability ( Up to 50 calcs with + edition ). ･ Load “Calc Unit” and re-calc with correction. ･ Register 2 consumption tax rates Tax included / excluded calc button with 2 types of consumption tax rates. ･ You can change tax rates on “Settings” at anytime. Structured calc ･ Go down and up between hierarchy with “Enter detail” button and “Parent node” button during calculation. Disclaimer ･ Please note that we are not responsible for any loss or damage caused by using this software. ･ We do our best to ensure the accuracy of the calculation results by this software, but we do not guarantee the accuracy. ## Version history (last 5 releases) ### 1.3.0 — 2025-11-13 Text alignment of the calculation list screen is now right-aligned. On the Settings screen, you can set to left-aligned. ### 1.2.2 — 2025-11-06 Improved the display of calculation summaries and other information. ### 1.2.1 — 2025-09-24 Now, iOS26, iPadOS26, macOS Tahoe Ready. Made corrections to address bugs. ### 1.2.0 — 2023-12-30 Now compatible with iPhone horizontal layout! Keyboard input and shortcuts are now supported in major situations such as calculator operation! You can now set your favorite colors and fonts! The tax calculation function is based on the specifications of a real calculator. Internally, it is now possible to perform calculations with higher precision. Made corrections to address bugs. ### 1.1.1 — 2020-10-26 Adjusted to iOS14/iPadOS14. ## Apps similar to Calculator S.L.U.Y.S+ | App | Rating | Price | Category | | --- | --- | --- | --- | | [inno3C Smart](https://appshunter.io/ios/app/inno3c-smart/id1635098642) | — | Free | Utilities | | [Calisto - List Calculator](https://appshunter.io/ios/app/calisto-list-calculator/id6476781364) | 5.0 (3) | Free | Utilities | | [Customizable calculator](https://appshunter.io/ios/app/customizable-calculator/id6740001661) | — | Free | Utilities | | [QR Code Scanner: QR Reader](https://appshunter.io/ios/app/qr-code-scanner-qr-reader/id6502285859) | 4.7 (15) | Free | Utilities | | [Barcode to PC: Wi-Fi scanner](https://appshunter.io/ios/app/barcode-to-pc-wi-fi-scanner/id1180168368) | 4.7 (362) | Free | Utilities | | [Stopwatch & Countdown](https://appshunter.io/ios/app/stopwatch-and-countdown/id1569326633) | 3.8 (4) | Free | Utilities | ## More apps by ImagineSpark Inc. - [放大字母 MagniZìfúer+](https://appshunter.io/ios/app/magnizifuer-plus/id1518264864) - [Calc S.L.U.Y.S](https://appshunter.io/ios/app/calc-sluys/id1518673906) - [放大字母 MagniZìfúer](https://appshunter.io/ios/app/magnizifuer/id1519142921) - [MODE Notes](https://appshunter.io/ios/app/mode-notes/id1526935312) - [MODE Notes lite : Local notes](https://appshunter.io/ios/app/mode-notes-lite-local-notes/id1531285808) All apps by ImagineSpark Inc.: https://appshunter.io/developer/1517195068 --- *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 2026-06-28.*