File System

Lesson in the iOS Roadmap · Stage 18: Data Persistence

Last updated 14 September 2026

What is File System?

The iOS file system sandboxes each app's data into private directories. The Documents directory is for user-facing files that should be backed up, the Caches directory is for regenerable data, and the tmp directory is for temporary files that do not need to persist. Apps use FileManager to create, read, write, move, and delete files within their sandbox.

Study this in the interactive course See the whole iOS roadmap

Free resources to learn File System

Official docsFile System Basics
Official docsAbout File System
Official docsFileManager

File System: common questions

Can I learn File System in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain File System in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this File System tutorial for beginners?

It is lesson 111 of 170 in the free iOS roadmap, in stage 18, Data Persistence. If you are new to iOS, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.