# Calcsmos: Calculator — Feature Rich Daily Used Calc > Minimalist, powerful, and customizable calculator with history and sync. (iPhone/iPad app by First Water Technologies Ltd.) - Source: https://appshunter.io/ios/app/calcsmos-calculator/id1590091618 (this page in markdown: same URL + `.md`) - Developer: [First Water Technologies Ltd](https://appshunter.io/developer/433671837) - Category: Productivity, Finance - Price: Free - Rating: 4.78/5 from 94 App Store ratings · 18 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 18 MB - Languages: English, German, Japanese, Chinese - Released: 2022-08-09 - Data updated: 2026-08-03 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calcsmos-calculator/id1590091618/reviews.md ## What is Calcsmos? Calcsmos is a minimal yet powerful calculator for your daily use, with: - Very customizable for the layout, color, style and theme. - Calculation History. - Dynamic value editing and partial deletion. - Multiple spaces for different tasks. - iCloud Sync supports. - Many useful overlays like tip calculator, unit converter. More to come. - Other useful features like sharing, printing and home screen widget. - No Ads, no trackers. ## Key features - Customizable layout, color, style, and theme - Calculation history - Dynamic value editing and partial deletion - Multiple spaces for different tasks - iCloud Sync support - Tip calculator and unit converter overlays - Home screen widget ## Recent user reviews (10 of 18) All indexed reviews: https://appshunter.io/ios/app/calcsmos-calculator/id1590091618/reviews.md ### 4/5 — Update broke widgets *2026-03-25, version 1.2.6* I absolutely love this app because I can leave a calculation on a widget. Say for example I can add my grocery bill up and see the total right on my screen. That was until a recent update. Now the widget shows nothing. That kind of breaks the app for me. ### 4/5 — Widget Problem seit Update *2026-03-22, version 1.2.6* Sehr guter Rechner. Leider zeigt das Widget seit dem letzten Update nichts mehr an. ### 1/5 — Minus Button *2024-09-19, version 1.2.3* Wo ist das Minus hin auf dem Button ? Seit dem neuen Update, kein Strich mehr vorhanden. ### 5/5 — Perfect calculator *2024-02-29, version 1.2.1* It got all your bases covered!! Even for conversions ! Easy to use! Great tutorial when you first open the app! …. Get it now u won’t regret it! ### 5/5 — Fantastic, full-featured, and free *2024-02-14, version 1.2.1* Really love this calculator. It does everything I want, especially the option to do per unit price calculations easily. If I could add one option to the wishlist of updates it would be a cleaner icon or even better choice of icons to select from. ### 5/5 — Great..but.. *2024-01-10* I love it..simple clean interface…but how do you delete one number you have entered incorrectly i cannot find how to do this without deleting the whole calculation and starting again **Developer response:** 1. You can swipe left to undo one character. 2. You can tap on any value on the formula to edit the value. ### 5/5 — SO GOOD AND FREE *2023-09-19, version 1.1.1* I hate calculator apps that paywall certain features and shove it down your throat about paying a subscription. THIS APP IS TRULY FREE AND I LOVE IT. Please add an option to donate/tip inside the app, would love to have the OPTION to support the development. ### 5/5 — Great free app *2023-03-25, version 1.1.1* What is this!? A free calculator app that works great, has a widget setup and no adds or monthly fees for a simple calculator app… I’ll take it! Strongly recommend. ### 5/5 — Honestly, great. *2023-03-09, version 1.1.1* There isn’t much to say this calculator is bad with. It works wonders with stage manager on iPads, which is enough to make this my daily use calculator. Even over an old one I paid for! Only hitch is I can’t seem to get support for an issue I have. I get an 404 error for the developer contact page. ### 5/5 — It Really Is FREE! *2023-01-23, version 1.1.1* This is a good calculator with basic and scientific functions. It has some nice features such as the built-in overlays. There are no advertisements! It really is completely free. ## Frequently asked questions about Calcsmos ### What makes Calcsmos stand out from other calculators? Calcsmos offers extensive customization for layout, color, style, and theme, along with features like calculation history, dynamic editing, multiple spaces, and useful overlays such as a tip calculator and unit converter. It also supports iCloud Sync and home screen widgets. ### Is Calcsmos free to use? Yes, Calcsmos is completely free to download and use. It does not feature ads or trackers, ensuring a clean and uninterrupted user experience. ### Can I sync my calculations across devices with Calcsmos? Yes, Calcsmos supports iCloud Sync, allowing you to seamlessly sync your calculation history and settings across your iPhone, iPad, and iPod devices. ### Does Calcsmos have any built-in conversion tools? Yes, Calcsmos includes useful overlays such as a tip calculator and a unit converter, making it a versatile tool for various daily calculations beyond basic arithmetic. ### How often is Calcsmos updated? The latest version, 1.2.6, was released on March 12, 2026. While specific update frequency isn't detailed, the app is actively maintained with new features planned. ### What age rating does Calcsmos have? Calcsmos has an age rating of 4+, making it suitable for users of all ages. It is designed for general daily use. ### Can I edit previous calculations in Calcsmos? Yes, Calcsmos allows for dynamic value editing and partial deletion of previous calculations, providing flexibility in correcting or modifying entries. ### Does Calcsmos offer a home screen widget? Yes, Calcsmos provides a home screen widget, allowing for quick access to calculator functions directly from your device's home screen. ## Version history (last 5 releases) ### 1.2.7 — 2026-04-15 - fix widget not working ### 1.2.6 — 2026-03-12 - various bug fixes ### 1.2.5 — 2024-11-11 - bug fix ### 1.2.4 — 2024-10-16 - bug fix ### 1.2.3 — 2024-09-19 - Update icons for iOS18 - Add a new Foot/Inch option in Unit Convert Overlay ## Apps similar to Calcsmos | App | Rating | Price | Category | | --- | --- | --- | --- | | [Quadsys](https://appshunter.io/ios/app/quadsys/id1610768520) | 5.0 (1) | Free | Productivity | | [MMSTAX](https://appshunter.io/ios/app/mmstax/id1587232040) | — | Free | Productivity | | [Calzy](https://appshunter.io/ios/app/calzy/id623690732) | 4.7 (1,885) | $1.99 | Productivity | | [Grupo Teclim Perú Admin.](https://appshunter.io/ios/app/grupo-teclim-peru-admin/id1582833040) | — | Free | Productivity | | [Sessip par S2IP](https://appshunter.io/ios/app/sessip-par-s2ip/id1582234240) | 3.5 (2) | Free | Productivity | | [Fil Rouge Experts Comptables](https://appshunter.io/ios/app/fil-rouge-experts-comptables/id1621267800) | — | Free | Productivity | --- *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 2026-08-03.*