# X123 Calculator with memory — Basic Scientific & Time calc > Free scientific calculator with memory, time calculation, and customization. (iPhone/iPad app by Botto Ingenierie Informatique.) - Source: https://appshunter.io/ios/app/x123-calculator-with-memory/id6469709507 (this page in markdown: same URL + `.md`) - Developer: [Botto Ingenierie Informatique](https://appshunter.io/developer/1712510068) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 13.4 · 20 MB - Languages: English, French - Released: 2023-10-26 - Data updated: 2026-06-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/x123-calculator-with-memory/id6469709507/reviews.md ## What is X123 Calculator with memory? Discover X123 your new calculating companion! Free and super-easy to use, X123 is the ideal calculator for your everyday calculations. Customize it the way you like and discover super-practical features to boost your efficiency like value memory, time calculation and landscape mode. BASIC CALCULATIONS With X123, switch easily from addition, to subtraction, multiplication, and division. Perfect for all your everyday needs! SCIENTIFIC CALCULATOR Find your arithmetic, trigonometric, logarithmic and exponential calculation options accessible at your fingertips. MEMORY FUNCTION Keep your favorite results and values at hand and reuse them at any time to simplify your most complex or frequent calculations. TIME CALCULATION Manage your time calculations with simplicity and insert the current time into your calculations with a simple click of the NOW key. FREE CALCULATOR Take unlimited advantage of all X123's calculation options, an entirely free calculator! LANDSCAPE MODE Switch to horizontal mode for enhanced visual and calculating comfort. DARK MODE Switch from light to dark mode in the blink of an eye and adapt your calculator's display to your preferences or ambient lighting. DUAL KEYBOARDS In landscape mode, display two keyboards simultaneously for double the efficiency! Choose from the options: Basic, Memory, Functions, and Time. ADVANCED CUSTOMIZATION Tailor your calculator: rearrange keys, rename them, choose your rounding, select language and writing standard. Make X123 an integral part of your everyday life. X123, your future essential, whether for work or everyday use! ## Key features - Basic and scientific calculations - Value memory function - Time calculation with NOW key - Landscape and dark modes - Dual keyboards in landscape - Advanced key customization ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Ads removal | $3.99 | one-time | ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/x123-calculator-with-memory/id6469709507/reviews.md ### 5/5 — Fait le travail *2024-04-26, version 1.0.25* Super calculatrice, très simple à prendre en main. Fonctionne parfaitement. ### 5/5 — Calcul de temps facile *2024-04-25, version 1.0.25* J’ai souvent besoin d’additionner des durées pour mon travail et enfin je trouve une calculatrice simple qui le propose. ### 5/5 — Tellement pratique ! *2024-03-27, version 1.0.23* Une excellente calculatrice, tellement pratique pour moi qui ai à faire beaucoup de calculs tous les jours ! Après une petite prise en main, c’est un outil qui se rend rapidement indispensable grâce des fonctionnalités très bien pensées. ### 5/5 — Merci *2024-03-26, version 1.0.21* Super pratique j’ai enfin trouvé la chaussure (ou calculatrice) à mon pied ### 5/5 — Hyper pratique *2024-03-26, version 1.0.21* L’interface est très fluide et le système de mémoires très utile au quotidien ! Je recommande ### 5/5 — Super calculatrice *2024-03-26, version 1.0.21* Calculatrice pratique d’utilisation ! Beaucoup d’options, je l’utilise quotidiennement dans mon travail. ## Frequently asked questions about X123 Calculator with memory ### What types of calculations can X123 perform? X123 supports basic arithmetic operations (addition, subtraction, multiplication, division) as well as scientific calculations including trigonometric, logarithmic, and exponential functions. ### Does X123 have a memory function? Yes, X123 features a value memory function that allows you to store and reuse favorite results or values, simplifying complex or frequent calculations. ### Can X123 handle time calculations? Yes, X123 includes a dedicated time calculation feature, enabling you to manage time calculations with simplicity and insert the current time using the NOW key. ### What customization options are available in X123? X123 offers advanced customization, allowing you to rearrange and rename keys, choose rounding preferences, select language, and switch between light and dark modes. ### Is X123 available on different devices? X123 is designed for iOS devices, including iPhone, iPad, and iPod, providing a consistent experience across Apple's mobile ecosystem. ### How often is X123 updated? The latest version of X123 is 1.0.46, and it was last updated on February 2, 2025, indicating active development and support. ### What is the age rating for X123? X123 has an age rating of 4+, making it suitable for a wide range of users, including children and adults. ### Is X123 free to use? Yes, X123 is a free calculator, and you can take unlimited advantage of all its calculation options without any cost. ## Version history (last 5 releases) ### 1.0.46 — 2025-02-02 Bug fixes ### 1.0.42 — 2025-01-21 Bug fixes ### 1.0.28 — 2024-05-29 Welcome to the new version of X123 - Improved app performance - Fixed several bugs to improve the stability of the app We hope you enjoy this new version of X123 ! A bug ? A suggestion ? Write to us: contact@b2i.tech ### 1.0.27 — 2024-05-20 Welcome to the new version of X123 - Improved app performance - Fixed several bugs to improve the stability of the app We hope you enjoy this new version of X123 ! A bug ? A suggestion ? Write to us: contact@b2i.tech 3 781 ### 1.0.25 — 2024-04-25 Welcome to the new version of X123 - Improved app performance - Fixed several bugs to improve the stability of the app We hope you enjoy this new version of X123 ! A bug ? A suggestion ? 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*