# Smart Abacus™ PreK-Grade 1 (Free) – Addition and Subtraction > Interactive abacus app for teaching early elementary addition and subtraction. (iPhone/iPad app by The Critical Thinking Company.) - Source: https://appshunter.io/ios/app/smart-abacus-prek-grade-1-free-addition-and-subtraction/id1072427114 (this page in markdown: same URL + `.md`) - Developer: [The Critical Thinking Company](https://appshunter.io/developer/882929408) - Category: Education, Games - Price: Free - Rating: 4.10/5 from 7 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 65 MB - Languages: American English - Released: 2016-05-17 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/smart-abacus-prek-grade-1-free-addition-and-subtraction/id1072427114/reviews.md ## What is Smart Abacus™ PreK? The Abacus That Teaches Children Addition and Subtraction The new, revolutionary way for kids to learn adding and subtracting! Smart Abacus™ teaches children in Grades PreK-1 addition, subtraction, and how to write numerals. The app is revolutionary in its simplicity! This hand-on approach uses colorful, fun, step-by-step lessons and provides plenty of guided practice. Children learn basic addition and subtraction of single digit numbers and then advance to addition of two digit numbers and subtraction involving regrouping. Smart Abacus™ is available for most large phones, tablets, and computers. For even more mathematical learning and practice, use Smart Abacus™ with our award-winning Mathematical Reasoning™ books! Grades: Preschool, Prekindergarten, Kindergarten, and 1st Grade Subjects: Mathematics and Critical Thinking Author: Michael Baker Features - Video tutorial for guided instruction - Teaching mode with 5 addition lessons and 5 subtraction lessons (in paid version*) - Teaches regrouping when subtracting - Trace your answer to learn to write numerals - Calculator mode for independent practice (in paid version*) - Free and Ad-free ## Key features - Addition and subtraction lessons - Numeral writing practice - Step-by-step guided instruction - Single and double-digit math - Regrouping in subtraction - Available on phones and tablets ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/smart-abacus-prek-grade-1-free-addition-and-subtraction/id1072427114/reviews.md ### 5/5 — No calculator? *2024-05-08* The app is really great, but I can’t figure out how to unlock the calculator. None of the pictures show the calculator so I wonder if it even works. It would be very helpful if it did. ## Frequently asked questions about Smart Abacus™ PreK ### What ages is Smart Abacus™ suitable for? Smart Abacus™ is designed for children in preschool, prekindergarten, kindergarten, and 1st grade, with an age rating of 4+. ### Does Smart Abacus™ have ads? No, Smart Abacus™ is ad-free, providing an uninterrupted learning experience for young children. ### What math concepts does Smart Abacus™ teach? The app teaches basic addition and subtraction of single-digit numbers, addition of two-digit numbers, and subtraction involving regrouping. It also helps children learn to write numerals. ### What devices can I use Smart Abacus™ on? Smart Abacus™ is available for most large phones, tablets, and computers, including iPhones, iPads, and iPods. ### How does Smart Abacus™ track progress? The app provides plenty of guided practice and step-by-step lessons, allowing children to learn and reinforce their understanding of addition and subtraction concepts. ### Is there a paid version of Smart Abacus™? The description mentions a paid version with additional features like teaching mode for addition and subtraction, and a calculator mode for independent practice. However, the current listing is for the free version. ### How often is Smart Abacus™ updated? The app was last updated on May 17, 2016, with version 1.0.0. Future updates may introduce new features or improvements. ### What is the user rating for Smart Abacus™? Smart Abacus™ has a rating of 4.1 stars from 7 ratings, indicating a generally positive user experience. ## Version history (last 1 release) ### 1.0.0 — 2016-05-17 This app has been updated by Apple to display the Apple Watch app icon. ## Apps similar to Smart Abacus™ PreK | App | Rating | Price | Category | | --- | --- | --- | --- | | [Abacus Lesson](https://appshunter.io/ios/app/abacus-lesson/id1596053232) | 4.8 (75) | Free | Education | | [Word Reading Magic](https://appshunter.io/ios/app/word-reading-magic/id1414486505) | 4.5 (182) | Free | Education | | [PreK Early Learning Games Lite](https://appshunter.io/ios/app/prek-early-learning-games-lite/id998325189) | 3.9 (7) | Free | Education | | [Italian Brainrot Coloring](https://appshunter.io/ios/app/italian-brainrot-coloring/id1505210888) | 4.3 (457) | Free | Education | | [Abacus Lesson -Multiplication-](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868) | 5.0 (12) | Free | Education | | [Abacus Champs Academy MathGame](https://appshunter.io/ios/app/abacus-champs-academy-mathgame/id1548197410) | — | Free | Education | ## More apps by The Critical Thinking Company - [Riddle Rabbit™ K-1](https://appshunter.io/ios/app/riddle-rabbit-k-1/id884173987) - [Math Analogies™ Beginning](https://appshunter.io/ios/app/math-analogies-beginning/id886297291) - [Math Analogies™ Level 1](https://appshunter.io/ios/app/math-analogies-level-1/id886329731) - [Alphabet Song Game™ (Free) - Letter Names and Shapes](https://appshunter.io/ios/app/alphabet-song-game-free-letter-names-and-shapes/id906538996) - [Balance Benders™ Beginning](https://appshunter.io/ios/app/balance-benders-beginning/id923491136) - [Balance Benders™ Level 1](https://appshunter.io/ios/app/balance-benders-level-1/id923536945) All apps by The Critical Thinking Company: https://appshunter.io/developer/882929408 --- *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 2026-06-10.*