# Smart Abacus™  PreK-Grade 1 – Addition and Subtraction

> Interactive abacus app for PreK-Grade 1 teaching addition and subtraction. (iPhone/iPad app by The Critical Thinking Company.)

- Source: https://appshunter.io/ios/app/smart-abacus-prek-grade-1-addition-and-subtraction/id1072426360 (this page in markdown: same URL + `.md`)
- Developer: [The Critical Thinking Company](https://appshunter.io/developer/882929408)
- Category: Education, Games
- Price: $1.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 7.0 · 66 MB
- Languages: English
- Released: 2016-05-12
- Data updated: 2026-06-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/smart-abacus-prek-grade-1-addition-and-subtraction/id1072426360/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 hands-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. 

Grades: Preschool, Prekindergarten, Kindergarten, and 1st (First) 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 
     - Teaches regrouping when subtracting
     - Trace your answer to learn to write numerals
     - Calculator mode for independent practice
     - Ad-free

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## Key features

- Addition and subtraction lessons
- Numeral writing practice
- Regrouping in subtraction
- Video tutorial
- Calculator mode for practice
- Ad-free experience


## Frequently asked questions about Smart Abacus™  PreK

### What age range is Smart Abacus for?

Smart Abacus is designed for children in Grades PreK-1, which typically includes ages 4 and up. The app has an age rating of 4+.

### What math concepts does Smart Abacus teach?

Smart Abacus teaches basic addition and subtraction of single-digit numbers, and progresses to addition of two-digit numbers and subtraction involving regrouping. It also covers how to write numerals.

### Does Smart Abacus have ads?

No, Smart Abacus is ad-free, providing an uninterrupted learning experience for children.

### What devices does Smart Abacus support?

Smart Abacus is available on iPhone, iPad, and iPod devices.

### How does Smart Abacus help children learn?

The app uses a hands-on approach with colorful, fun, step-by-step lessons and guided practice. It includes a video tutorial for instruction and a calculator mode for independent practice.

### When was Smart Abacus last updated?

Smart Abacus was last updated on May 12, 2016, with version 1.0.0.

### What is the price of Smart Abacus?

Smart Abacus is a paid app, priced at $1.99.

### How does Smart Abacus track progress?

While the description mentions guided practice and independent practice modes, it does not explicitly detail a progress tracking feature within the app.

## Version history (last 1 release)

### 1.0.0 — 2016-05-12

This app has been updated by Apple to display the Apple Watch app icon.

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All apps by The Critical Thinking Company: https://appshunter.io/developer/882929408

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*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 2026-06-25.*