# OS Revision

> OS Revision (iPhone/iPad app by Ho Long Chung.)

- Source: https://appshunter.io/ios/app/os-revision/id6767216142 (this page in markdown: same URL + `.md`)
- Developer: [Ho Long Chung](https://appshunter.io/developer/1896427166)
- Category: Education, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 26.2 · 19 MB
- Languages: English
- Released: 2026-05-08
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/os-revision/id6767216142/reviews.md

## What is OS Revision?

Features:
• Comprehensive regulation notes covering Cap. 59 and subsidiary legislation
• Practice questions with instant feedback
• Daily streak tracking to build consistent study habits
• Star and bookmark key regulations and questions for quick review
• Office QR code check-in for convenience


## Version history (last 4 releases)

### 1.0.3 — 2026-06-15

- Inspections map feature (Firestore-backed, geocoding + map preview, route planning, saved routes)

- Study tab merging Practice + Notes, plus the new Inspections tab and the Home quick-access index fix

- Update notice overlay

- Welcome-back once-per-day guard

- Smart Practice, starred categories, tiers, and data/UI updates

### 1.0.2 — 2026-05-17

• New Smart Practice mode: the app tracks which questions you've seen and prioritises the ones you've practised least, so your study time goes where it's needed most
• Expanded question bank with more practice content
• Bug fixes and stability improvements

### 1.0.1 — 2026-05-12

Added full study content for the Occupational Safety and Health Ordinance (Cap. 509), OSH Regulation (Cap. 509A), and OSH (Display Screen Equipment) Regulation (Cap. 509B), including all sections, schedules and penalties — accessible under Notes → Cap. 509 OSHO.

Practice mode now supports filtering by Cap. 509, 509A and 509B, with session results labelled by regulation name.

### 1.0 — 2026-05-08

No release notes.

## Related topics

[os revision](https://appshunter.io/ios/topics/os-revision)

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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.*