An app can help us play.
Apps help us find a path.
An app can send a note.
An app can cost cash.
A kid has to ask.
Ask mom. Ask dad.
Words to know
- app: a program
- note: short message
Facts
Facts the Peabody Encyclopedia for kids
Real facts about everything, written for your grade.
What Is an App?
How Apps Work: How does an app work?
Read next
Sources
- https://www.britannica.com/technology/iPhone
- https://csrc.nist.gov/glossary/term/application
- https://www.apple.com/newsroom/2018/07/app-store-turns-10/
- https://www.cisa.gov/news-events/news/privacy-and-mobile-device-apps
- https://developer.apple.com/programs/
- https://support.apple.com/en-us/105055
- https://support.google.com/families/answer/7101025
- https://consumer.ftc.gov/articles/kids-cell-phones
- https://support.apple.com/en-us/119854
- https://developer.android.com/develop/ui/views/notifications/build-notification
- https://support.apple.com/guide/iphone/change-notification-settings-iph7c3d96bab/ios
- https://www.esrb.org/tools-for-parents/
- https://computerhistory.org/blog/new-iphone-exhibit-celebrates-the-one-device-that-changes-everything/
- https://support.google.com/android/answer/9079644
- https://developer.apple.com/app-store/
- https://support.apple.com/en-us/105121
- https://support.google.com/android/answer/9431959
- https://developer.android.com/guide/components/fundamentals
- https://support.google.com/googleplay/answer/113412
- https://www.britannica.com/technology/computer-program
- https://csrc.nist.gov/glossary/term/software
- https://www.britannica.com/technology/operating-system
- https://csrc.nist.gov/glossary/term/operating_system
- https://support.google.com/googleplay/answer/1075738
- https://csrc.nist.gov/glossary/term/server
- https://developer.mozilla.org/en-US/docs/Learn_web_development/Howto/Web_mechanics/What_is_a_web_server
- https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps
- https://web.dev/articles/what-are-pwas
- https://www.cisa.gov/secure-our-world/update-software
- https://csrc.nist.gov/glossary/term/malware
- https://developer.android.com/training/basics/network-ops/connecting
- https://developer.mozilla.org/en-US/docs/Web/HTTP/Overview
- https://csrc.nist.gov/glossary/term/database
- https://privacy.ca.gov/2025/09/limit-mobile-app-tracking/
- https://support.apple.com/en-us/102420
- https://developer.android.com/studio/intro
- https://developer.apple.com/xcode/
- https://developer.apple.com/support/app-store/
- https://support.google.com/googleplay/android-developer/answer/9858738
- https://developer.apple.com/app-store/review/guidelines/
- https://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Scripting/What_is_JavaScript
- https://developer.android.com/guide/topics/permissions/overview
- https://search.ftc.gov/business-guidance/resources/complying-coppa-frequently-asked-questions
- https://consumer.ftc.gov/articles/protecting-your-childs-privacy-online
- https://support.apple.com/en-us/108774
- https://developer.apple.com/app-store/app-privacy-details/
- https://www.cisa.gov/secure-our-world/recognize-and-report-phishing
- https://developer.mozilla.org/en-US/docs/Learn_web_development/Extensions/Server-side/First_steps/Client-Server_overview
- https://csrc.nist.gov/glossary/term/application_programming_interface
- https://developer.android.com/guide/topics/ui/accessibility
- https://developer.android.com/develop/ui/views/notifications
- https://csrc.nist.gov/glossary/term/client
- https://csrc.nist.gov/glossary/term/cloud_computing
- https://csrc.nist.gov/glossary/term/personally_identifiable_information
- https://csrc.nist.gov/glossary/term/encryption
- https://csrc.nist.gov/glossary/term/mobile_code
- https://developer.android.com/guide/app-bundle
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