# Chiong Lab: Your Study Buddy — O-Level Revision

> O-Level Revision (iPhone/iPad app by Jia Da Lim.)

- Source: https://appshunter.io/ios/app/chiong-lab-your-study-buddy/id6803153824 (this page in markdown: same URL + `.md`)
- Developer: [Jia Da Lim](https://appshunter.io/developer/6803153826)
- Category: Education
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 16.4 · 108 MB
- Languages: American English
- Released: 2026-09-16
- Data updated: 2026-10-29

## What is Chiong Lab?

Chiong Lab makes O-Level revision something you do daily rather than the night before.

Physics is hard to revise from a textbook, because the ideas only click when you change a number and watch the diagram answer back. So the lessons here are built around diagrams you drive: move a slider, flip a cell, tilt a ramp, and the current, the forces and the meter readings all move with it.

WHAT IS IN THE APP

- 127 lessons across all 20 topics of the Pure Physics 6091 syllabus
- Measurement and kinematics, through forces, moments, pressure, energy, the kinetic model, thermal physics, waves, light and sound, to electricity, magnetism, electromagnetism and electromagnetic induction
- 2,203 exam-style questions, including a timed exam-level round at the foot of every topic
- Interactive diagrams with sliders, switches and live readings
- A worked explanation on every question, including the ones you skip

HOW THE PRACTICE WORKS

Questions you get wrong come back sooner, and the ones you know come back rarely, so your time goes where it is actually needed. A daily streak, XP and three daily quests keep the habit going, and a notebook keeps every question you got wrong so you can go back to it.

WRITTEN FOR THE EXAM

Explanations name the word that earns the mark. Units and significant figures are treated as marks rather than pedantry, because that is how they are graded. Every question is the kind the syllabus actually sets.

PLAY AS A GUEST, OR MAKE A PROFILE

Every lesson and question is inside the app, so a guest can revise on the bus with no account and no signal. A free profile is optional: it keeps your progress on our server so it follows you to another device, and it opens a weekly leaderboard, friends, an optional public profile and a shared feed where you can cheer each other on. You must be 13 or older to create one, and you can delete it at any time from ME > Settings.

NO ADS, NOTHING TO BUY

There is no advertising, no subscription and no in-app purchase. Every lesson in the app is available to everyone from the first launch.

## Is Chiong Lab safe?

Not enough ratings yet to assess Chiong Lab.

## Is Chiong Lab legit?

Chiong Lab: Your Study Buddy has limited verification signals. The AppsHunter Legitimacy Score for Chiong Lab is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.1.4 — 2026-10-03

Light diagrams fixed, and questions show their animation first.

- Every light ray now meets the surface it bounces from and reaches the eye, and the prism bends light the right way.
- When a question depends on seeing something move, its animation plays before you choose.
- The electrical power lessons use the syllabus words: power and power rating.
- Fixed a freeze after answering in some lessons, and the close button always works.
- Privacy and safety improvements for profiles, the leaderboard and notifications.

### 1.1.3 — 2026-10-01

Notes back in the lessons, and every diagram drawn.

- Each topic's notes now sit between the question cards that test them.
- Long notes cards are split into short ones, each with its own diagram.
- New cards show the common trap, and a model answer written for full marks.
- Diagrams draw the real thing: scissors, a wheelbarrow, a crowbar under a rock, a calorimeter.
- Pinch any diagram to zoom, or open it full screen.
- Measurement is split into shorter lessons.
- The weekly champion now appears in Achievements.

### 1.1.2 — 2026-09-25

Every physics lesson, rebuilt.

- Each lesson card now asks you to decide something before the diagram shows the answer.
- The diagrams draw the real apparatus: the ramp, the lens, the ammeter, the magnet.
- Radioactivity arrives as a new topic.
- Lessons and question sets open from your phone first, so they load faster.
- Fresh words on the 4 pm and 10 pm practice reminders.

### 1.1.1 — 2026-09-20

A leaderboard for your friends, and electricity rebuilt.

- The weekly league is now a leaderboard: race your friends this week, or see everyone with a public profile.
- Current of Electricity, D.C. Circuits and I–V Characteristics are rebuilt as short cards, with circuits that show the charge moving.
- More questions draw the diagram they describe.
- Build the equation accepts any correct arrangement.
- Rate any question or lesson card, and bookmark what you want to come back to.
- See who reacted to your posts, and get a notification when they do.
- Forgot your password? Reset it from the sign-in screen.

### 1.1.0 — 2026-09-16

No release notes.

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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 2026-10-29.*