# Arithmetic Invaders Express: Grade K-3 Math Facts > K-3 math fact practice games with a solar system theme. (iPhone/iPad app by natasa gajic.) - Source: https://appshunter.io/ios/app/arithmetic-invaders-express-grade-k-3-math-facts/id453828527 (this page in markdown: same URL + `.md`) - Developer: [natasa gajic](https://appshunter.io/developer/397925370) - Category: Games, Education - Price: Free - Rating: 3.00/5 from 4 App Store ratings · 44 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 21 MB - Languages: American English - Released: 2011-08-06 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/arithmetic-invaders-express-grade-k-3-math-facts/id453828527/reviews.md ## What is Arithmetic Invaders Express? Play one of Arithmetic Invaders: Express addition, subtraction and multiplication games to defend the solar system and master K-3 arithmetic. Also, learn some basic facts about the Solar System. * Count up Game * Count down Game * Addition Game * Two Subtraction Games * Multiplication Game * Basic facts about the Solar System * Focus on Math problems to avoid random shoot-out * Complete missions to move to the next level and earn space pilot ranks * Collect insignia * Apply fine motor skills and hand-eye coordination * Watch video: http://youtu.be/C5-nZKZ-tYI Arithmetic Invaders Applications are designed as unique iPhone and iPad applications that both educate and entertain. Intuitive table structure is used to present the list of space missions. Each mission displays a title, best score, and some basic information of the planet you are expected to save. Unlock each level to play it. To do that, complete each mission in the given order. A user is allowed three incorrect hits. The mission length can be chosen: 2, 3 or 5 minutes. Completion of the last mission brings the user the highest rank – DEFENDER OF THE SOLAR SYSTEM. Throughout the game the user is expected to solve the arithmetic problem (math fact) displayed on the invader ships. In order to score, the user is expected to connect the number printed on the laser gun with the result of the corresponding mathematical problem. ## Key features - Addition, subtraction, and multiplication games - Solar system facts - Mission-based progression - Rank and insignia collection - Fine motor skill development - Adjustable mission length ## Recent user reviews (10 of 44) All indexed reviews: https://appshunter.io/ios/app/arithmetic-invaders-express-grade-k-3-math-facts/id453828527/reviews.md ### 4/5 — Teacher Review - Arithmetic Invaders *2015-08-29, version 2.1* 3.5 stars. Not a bad little skill practice app with Space Invaders style graphics. It probably won't hold a child's attention for days, but decent for several 15 to 20 minute practice sessions. For children that need more time for computation, this game may be a little fast and frustrating. I would probably use this with an advanced 1st grader or 2nd grader. ### 5/5 — Homework by stealth *2014-06-13* This app is a great overview of the series. I love how kids enjoy playing the games so much, they forget they are actually working. ### 5/5 — How fun! *2013-09-15, version 2.1* The game part is fun! Math facts and facts about Solar System is something parents appreciate. ### 2/5 — Sound *2013-04-22, version 2.1* There is no sound please fix! ### 3/5 — Ok, not for very easily frustrated *2012-11-21, version 2.1* Well I haven't had too much luck getting my son interested in the game. I doubt it's really the game though. He has a very low frustration level and is easily stressed if it feels like its going too fast. ### 4/5 — Busy kids *2012-11-21* Love how it tricks the kids to thinks they are just playing!! ### 5/5 — Math fun! *2012-11-19, version 2.1* My son LOVES playing math games and combining them with a space atmosphere makes it all the better. THANKS! ### 4/5 — Free and Good *2012-11-19, version 2.1* This seems to be a good free little app for lower primary students to practice their math! ### 5/5 — Exciting *2012-11-17, version 2.1* It is hard to find an educational app my son looks forward to playing, this is one he gets excited about! ### 5/5 — Great for Math Facts *2012-11-16, version 2.1* My kiddos liked this very much and I liked that they were working on their math facts and having fun at the same time!! ## Frequently asked questions about Arithmetic Invaders Express ### What is Arithmetic Invaders Express? Arithmetic Invaders Express is an educational game designed for iPhone and iPad that helps children in grades K-3 master basic arithmetic facts. It combines math practice with a fun solar system defense theme, making learning engaging. ### What math skills does this app teach? The app focuses on core K-3 arithmetic skills, including addition, subtraction, and multiplication. It features various game modes like 'Count up', 'Count down', and specific games for each operation to reinforce learning. ### How does the game work? Players solve arithmetic problems displayed on invader ships by connecting the correct number to the laser gun. Completing missions in order unlocks new levels, and players earn ranks and collect insignia as they progress. ### Is this app compatible with my device? Arithmetic Invaders Express is designed as a unique iPhone and iPad application. It is optimized for these Apple devices, offering an intuitive experience on both. ### What are the benefits of playing this game? Beyond mastering math facts, the game helps develop fine motor skills and hand-eye coordination. It also introduces basic facts about the Solar System, providing a dual educational benefit. ## Version history (last 5 releases) ### 3.2 — 2016-10-27 This app has been updated by Apple to display the Apple Watch app icon. - improved user interface - four different weapons to chose from (including the famous cyber monkey!) - multiple new and improved levels - full access to all features of the game with no In App Purchase required ### 3.1 — 2015-12-13 - completely redesigned interface - four different weapons to chose from (including the famous cyber monkey!). - multiple new and improved levels - full access to all features of the game with no In App Purchase required ### 3.0 — 2015-11-11 - completely redesigned interface - four different weapons to chose from (including the famous cyber monkey!). - multiple new and improved levels - full access to all features of the game with no In App Purchase required ### 2.1 — 2012-01-10 * Rank * Improved audio and visual effects * App compliant with Children’s Online Privacy Protection Rule (COPPA) ### 2.0 — 2011-12-19 • Improved gameplay (no randomly shooting out!) • Improved transition between skill levels • Planet facts included • Voice guided game ## Apps similar to Arithmetic Invaders Express | App | Rating | Price | Category | | --- | --- | --- | --- | | [Word Runners](https://appshunter.io/ios/app/word-runners/id1574876585) | 2.3 (4) | Free | Games | | [Spill Zone](https://appshunter.io/ios/app/spill-zone/id896251878) | 4.8 (30) | Free | Games | | [The Brain Tuner](https://appshunter.io/ios/app/the-brain-tuner/id1574392325) | — | Free | Games | | [Glow Burst Lite](https://appshunter.io/ios/app/glow-burst-lite/id400029059) | 4.3 (16) | Free | Games | | [Math Tower Defense](https://appshunter.io/ios/app/math-tower-defense/id1524386183) | 5.0 (3) | Free | Games | | [Galactic Math Blaster](https://appshunter.io/ios/app/galactic-math-blaster/id1525622392) | 5.0 (1) | Free | Games | ## More apps by natasa gajic - [Build A Word: Serbian Language](https://appshunter.io/ios/app/build-a-word-serbian-language/id406835565) - [Build A Word Easy Spelling Long&Short Vowels,Sight](https://appshunter.io/ios/app/build-a-word-easy-spelling-long-and-short-vowelssight/id415596411) - [Build A Word - Easy Spelling with Phonics](https://appshunter.io/ios/app/build-a-word-easy-spelling-with-phonics/id436102581) - [Build A Word Express - Practice spelling and learn letter sounds and names](https://appshunter.io/ios/app/build-a-word-express-practice-spelling-and-learn-letter-sounds-and-names/id445774924) - [Montessori Alphabet Maze Free](https://appshunter.io/ios/app/montessori-alphabet-maze-free/id545685160) All apps by natasa gajic: https://appshunter.io/developer/397925370 --- *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.*