# Number Bonds! — Practice Number Bonds 10-9999 > Educational app for practicing number bonds with customizable sums and multiplayer challenges. (iPhone/iPad app by aMASE AB.) - Source: https://appshunter.io/ios/app/number-bonds/id1423186852 (this page in markdown: same URL + `.md`) - Developer: [aMASE AB](https://appshunter.io/developer/958270984) - Category: Education, Games, Family, Trivia - Price: $1.99 - Age rating: 4+ - Requires: iOS 9.0 · 63 MB - Languages: American English, Danish, Dutch, Finnish, French (France), German (Germany), Italian, Norwegian Bokmål, European Portuguese, European Spanish and 1 more - Released: 2018-08-12 - Data updated: 2026-09-07 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/number-bonds/id1423186852/reviews.md ## What is Number Bonds!? To recognise the number bonds is considered to be a basic mathematical skill for preschool children. This app provides four different ways to practice number bonds to 10 or any other sum that is selected between 10 and 9999. Users can also team up and challenge each other in a two player challenge. The app is preset for number bonds to 10 (also known as "friends of ten"), which provides a suitable start for younger kids. By practising and learning to recognise the numbers that sum up to 10 the user also gets prepared to handle more complicated math tasks. Number bonds contains four different exercises and are developed to be easy to use by children themselves. Each exercise contains 6 different tasks that must be completed before a reward is shown to the user. An exercise can also be made in pairs, where you compete to be the first to succeed with all 6 tasks. In the settings section of the app other sums for number bonds can be chosen. In that way the app will be useful also for older children that already have a good mathematical knowledge. By practicing more complicated number bonds sum the user can develop new mathematical strategies. How do you for example solve what number that pairs with 314 to the sum of 869? Start thinking in hundreds (5 + 3 = 8), continue with tens (5 + 1 = 6) and finally the ones (5 + 4 = 9) and you will get to the result of 555, even before you have had time to start the calculator. With that kind of strategies even younger kids can learn to solve complex mathematical tasks. And remember - you never get to old to learn new things! Number Bonds do not contain any advertisments or in-app purchases. The app does not store anything online or collect any information about the user. ## Key features - Practice number bonds to 10, 100, or up to 9999 - Four distinct practice exercises - Two-player challenge mode - Customizable sums in settings - Reward system for task completion - Ad-free and no in-app purchases ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/number-bonds/id1423186852/reviews.md ### 1/5 — Number bonds app *2020-05-05* Don’t buy this app it crashes all the time, it’s not intuitive and there is no app support. I will contact Apple to request refund. **Developer response:** Really sorry to read that You are not satisfied with the app. Would very much like to help and would appreciate if You could contact us at hello@amase.se and give us some more details regarding the crashes you have experienced. Would also be great to hear what parts of the app You think can be improved and that You do not find intuitive. Thanks! ## Frequently asked questions about Number Bonds! ### What is the main purpose of Number Bonds? Number Bonds is designed to help children recognize and practice number bonds, a fundamental math skill. It offers various exercises to build foundational math abilities and prepare users for more complex calculations. ### What age group is Number Bonds suitable for? The app is suitable for children aged 4 and up, as indicated by its 4+ age rating. It starts with number bonds to 10 for younger children and can be adjusted for older children with more complex sums. ### Can Number Bonds be used on multiple devices? Yes, Number Bonds is supported on iPhones and iPads. It is designed to be accessible on Apple's mobile and tablet devices. ### How does Number Bonds help older children? For older children, the app allows customization of sums up to 9999. This enables them to practice more complex number bond strategies, fostering the development of new mathematical thinking. ### Does Number Bonds have ads or in-app purchases? No, Number Bonds is completely free of advertisements and in-app purchases. Users can enjoy the full educational experience without any interruptions or additional costs. ### How often is Number Bonds updated? The app was last updated on September 30, 2019, with version 1.3 being the latest release. While updates are not frequent, the core functionality remains stable for educational purposes. ### What is the price of Number Bonds? Number Bonds is a paid application priced at $1.99. This one-time purchase grants access to all its features without recurring fees or ads. ### Does Number Bonds collect user data? No, Number Bonds prioritizes user privacy. The app does not store any information online or collect any personal data from its users. ## Version history (last 4 releases) ### 1.3 — 2019-09-30 Updates for new iOS and iPadOS ### 1.2 — 2018-11-17 Minor bug fixes and improvements. ### 1.1 — 2018-08-25 Minor bug fixes and improvements. ### 1.0 — 2018-08-09 No release notes. ## Apps similar to Number Bonds! | App | Rating | Price | Category | | --- | --- | --- | --- | | [Money Matrix (CAD)](https://appshunter.io/ios/app/money-matrix-cad/id581120498) | 5.0 (1) | Free | Education | | [Your Addition & Subtraction](https://appshunter.io/ios/app/your-addition-and-subtraction/id1109737529) | 5.0 (1) | $2.99 | Education | | [Adjectives Quiz Games For Kids](https://appshunter.io/ios/app/adjectives-quiz-games-for-kids/id1461065879) | — | $2.99 | Education | | [Number Bond Challenge](https://appshunter.io/ios/app/number-bond-challenge/id6753198796) | 5.0 (1) | Free | Education | | [4th - 6th Grade Vocabulary](https://appshunter.io/ios/app/4th-6th-grade-vocabulary/id361858221) | 3.2 (36) | $0.99 | Education | | [Compass Point Montessori](https://appshunter.io/ios/app/compass-point-montessori/id6749251192) | — | Free | Education | ## More apps by aMASE AB - [ABC - Learn to read](https://appshunter.io/ios/app/abc-learn-to-read/id784199235) - [Practice Maths](https://appshunter.io/ios/app/practice-maths/id905744746) - [My Fairy Tale](https://appshunter.io/ios/app/my-fairy-tale/id983033583) - [I Read - Reading exercises for kids!](https://appshunter.io/ios/app/i-read-reading-exercises-for-kids/id1032952301) - [SpeedMaths!](https://appshunter.io/ios/app/speedmaths/id1087155794) - [Start to read](https://appshunter.io/ios/app/start-to-read/id1277636612) All apps by aMASE AB: https://appshunter.io/developer/958270984 ## Related topics [fun number bonds](https://appshunter.io/ios/topics/fun-number-bonds) · [squeebles number bonds](https://appshunter.io/ios/topics/squeebles-number-bonds) · [number bonds worksheets](https://appshunter.io/ios/topics/number-bonds-worksheets) · [number bonds](https://appshunter.io/ios/topics/number-bonds) · [amase ab](https://appshunter.io/ios/topics/amase-ab) --- *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 2026-09-07.*