# UAbacus > Abacus computation practice app using the logic method. (iPhone/iPad app by University of Arizona.) - Source: https://appshunter.io/ios/app/uabacus/id688547692 (this page in markdown: same URL + `.md`) - Developer: [University of Arizona](https://appshunter.io/developer/437682109) - Category: Education - Price: Free - Rating: 3.50/5 from 4 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 6.0 · 23 MB - Languages: American English - Released: 2013-08-19 - Data updated: 2026-08-27 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/uabacus/id688547692/reviews.md ## What is UAbacus? UAbacus With the UAbacus you can add and subtract numbers using the "logic method" for abacus computation. Those learning abacus computation can practice their computation skills getting help with a step if they become stuck and having the correct answer verified. Users who do not know how to compute using a Cranmer abacus using the logic method can support individuals who are abacus users by following the steps necessary to solve the problem as the individual works the problem on a Cranmer abacus. ## Key features - Abacus computation practice - Logic method instruction - Step-by-step guidance - Answer verification - Support for abacus users ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/uabacus/id688547692/reviews.md ### 3/5 — Why only addition and subtraction? *2023-02-24* This is a great tool if I’m teaching parents or visual learners what my student is doing, but my biggest complaint is it only does addition and subtraction. I would love to see more advanced options because that is where parents and teachers struggle to support their student. ### 3/5 — Problem *2014-09-21* I never had any problems with this app before and now it isn't working since I downloaded iOS 8 ### 5/5 — Huge Possibilities! *2013-11-23* Now I can teach my blind students the abacus accurately without struggling to remember the steps myself, and classroom teachers who do not know the steps can do the same. ### 5/5 — TVI/O&M *2013-09-27* Instruction in abacus can be confusing for students and in some cases teachers. This app is clear and concise giving the user the ability to control how much feedback is given to learner. The step by step instruction is very helpful to a beginner learner and a good check for someone who needs an occasional prompt. Future additions to the program in other areas of math would be awesome! I really enjoy this app and would strongly urge other TVI's, parents, other teachers to use this app for a child with visual impairements or a child struggling in math. ### 5/5 — Great tool for learning basic abacus *2013-08-24* UAbacus allows practice adding and subtracting whole numbers directly. One can also compute adding and subtracting indirectly (carrying). Can be customize to include steps, speaking bead numbers, etc. Nice sound effects-- clicking with movement of beads. Straight forward. ## Frequently asked questions about UAbacus ### What is the logic method used in UAbacus? The logic method is a specific technique for performing calculations on a Cranmer abacus. UAbacus guides users through these steps to help them understand and practice this computation style. ### Can UAbacus help me learn abacus from scratch? Yes, UAbacus is designed to support individuals learning abacus computation. It offers step-by-step guidance and verifies correct answers to aid in the learning process. ### Does UAbacus offer practice for addition and subtraction? Yes, UAbacus allows users to add and subtract numbers using the logic method for abacus computation practice. ### How does UAbacus verify answers? UAbacus provides verification of the correct answer after a user attempts a computation. This helps learners confirm their understanding and accuracy. ### Is UAbacus available on Android devices? Based on the provided data, UAbacus is currently only supported on iPad devices. It is not listed as available for Android. ### What is the update frequency for UAbacus? The app was last updated on December 10, 2016. This indicates a long period since the last update, suggesting infrequent new feature releases or bug fixes. ### What is the age rating for UAbacus? UAbacus has an age rating of 4+, making it suitable for young learners and children. ### Does UAbacus have ads? No, UAbacus does not contain advertisements. The app is free and does not display any ads. ## Version history (last 3 releases) ### 1.1.10 — 2016-12-10 This app has been updated by Apple to display the Apple Watch app icon. Minor bug fixes. ### 1.1.9 — 2014-11-10 Enhanced for iOS8 ### 1.1.7 — 2013-08-19 No release notes. ## Apps similar to UAbacus | App | Rating | Price | Category | | --- | --- | --- | --- | | [ObjectiveEd Games](https://appshunter.io/ios/app/objectiveed-games/id1464610475) | 3.6 (17) | Free | Education | | [Abaculator](https://appshunter.io/ios/app/abaculator/id1634634260) | — | Free | Education | | [CViConnect Pro](https://appshunter.io/ios/app/cviconnect-pro/id1440339295) | 5.0 (5) | Free | Education | | [Quick and Easy ECC](https://appshunter.io/ios/app/quick-and-easy-ecc/id1509471851) | 5.0 (2) | Free | Education | | [Abacus Adventure Lite](https://appshunter.io/ios/app/abacus-adventure-lite/id568745586) | 4.0 (8) | Free | Education | | [TalkingAbacus](https://appshunter.io/ios/app/talkingabacus/id548246827) | 5.0 (3) | Free | Education | ## More apps by University of Arizona - [University of Arizona](https://appshunter.io/ios/app/university-of-arizona/id437682106) - [UAGC Talon Mobile](https://appshunter.io/ios/app/uagc-talon-mobile/id440722504) - [Constellation for UAGC](https://appshunter.io/ios/app/constellation-for-uagc/id444832035) - [Chemistry By Design: Target Synthesis Database](https://appshunter.io/ios/app/chemistry-by-design-target-synthesis-database/id451791347) - [UAGC Talon Tablet](https://appshunter.io/ios/app/uagc-talon-tablet/id467730770) All apps by University of Arizona: https://appshunter.io/developer/437682109 --- *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 2026-08-27.*