Mistake Notebook and Smart Review: Fix English Errors for Good (M.1-3)
Most students practice English the same way: answer new questions, check the score, move on. The trouble is that the questions you get wrong tend to come back on exam day. This article takes a close look at two features in English M.1-3 practice app ตะลุยโจทย์อังกฤษ ม.1-3 by ChatStick, the Mistake Notebook and Smart Review, which are built to make sure every mistake gets fixed instead of forgotten.
Why more practice does not always mean higher scores
New questions show you new patterns, but wrong answers are the most useful data you have. They point straight at the grammar rule or vocabulary you have not mastered yet. If you never revisit them, the same misunderstanding follows you into the exam room. The fix is simple in theory: keep your mistakes, understand why they were wrong, and retry them at spaced intervals until you get them right on your own. That is the idea behind spaced repetition.
The app in brief
The app is designed for Thai lower-secondary students in Grades 7 to 9 (M.1 to M.3). It contains 3,000 English questions: 1,000 for M.1 Foundation, 1,000 for M.2 Intermediate and 1,000 for M.3 Exam Ready. Skills covered include Grammar, Vocabulary, Reading, Conversation, Situational English, Listening and Culture, organized by the standards and indicators of Thailand's Basic Education Core Curriculum. It targets midterms, finals and the O-NET M.3 exam. Explanations are written in Thai.
Feature 1: the Mistake Notebook
Every time you answer a question wrong, the app saves it to your Mistake Notebook automatically. No manual note-taking, and no trying to remember what you missed last week.
Automatic capture: every wrong answer is stored in one place.
Detailed filters: view mistakes by grade, skill category and difficulty.
Mistakes-only practice: retry just the questions you missed, which saves time before an exam.
My Favorites: bookmark any question you want to see again before test day.
Feature 2: Smart Review on a 1-3-7-14 day schedule
Saved mistakes do not just sit in the notebook. Smart Review brings each one back on a spaced schedule, and a "time to review" screen tells you how many questions are due that day.
First review: the next day.
Second review: after 3 days.
Third review: after 7 days.
Final review: after 14 days.
Five-part explanations that turn mistakes into understanding
Retrying a question only helps if you know why you got it wrong. That is why every question comes with a structured explanation in five parts.
Correct Answer: the right choice.
Why: the reasoning behind it.
Grammar Rule: the rule being tested.
Example: a sentence showing the rule in use.
Remember: a memory tip from the app's fox mascot, for example that "since" marks a starting point while "for" marks a duration.
How to get the most out of these features
Start with Quick 10 or the 10-question Daily English Challenge so the app can collect your weak spots.
Read all five parts of the explanation every time you miss a question.
Open the "time to review" screen daily and clear every due question.
In the week before an exam, switch to mistakes-only practice and filter by the topics on the test.
Finish with a mock test, then check your results by topic on the My English screen.
Tip: the app suggests 5 to 15 minutes of practice a day. Short daily sessions that follow the Smart Review schedule tend to stick better than one long cram session.
Other features that work alongside them
Daily English Challenge: 10 questions a day (2 Vocabulary, 3 Grammar, 2 Conversation, 2 Reading, 1 Challenge), worth +50 XP when completed.
Mock tests: M.1, M.2, M.3 or combined M.1-3 sets of 20, 30 or 50 questions, with an optional timer.
My English: accuracy by skill and topic, with suggested topics to practice.
Reading and Listening: varied passages plus in-app English audio with a male or female voice and a viewable script.
XP levels: progress from Starter to English Master, with streaks and achievements.
Offline use: no sign-up or login required; progress is saved on the device.
App information
Price: free to download (the free version shows ads). An optional one-time Unlock All Features purchase costs THB 149 and unlocks all 3,000 questions, all mock tests, an unlimited Mistake Notebook, unlimited hints and removes ads.
Compatibility: iPhone and iPad with iOS / iPadOS 18.0 or later, Mac with Apple M1 chip or later (macOS 15.0 or later), and Apple Vision (visionOS 2.0 or later).
Size: about 29 MB.
Age rating: 4+.
Developer: ChatStick Company Limited.
Frequently asked questions
Do I have to add mistakes to the notebook myself?
No. The app saves every wrong answer automatically, and you can filter the notebook by grade, category and difficulty.
How often does Smart Review bring questions back?
A missed question returns the next day, then after 3, 7 and 14 days. The "time to review" screen shows how many are due each day.
Can I use the Mistake Notebook in the free version?
Yes. The one-time THB 149 Unlock All purchase makes the notebook and hints unlimited, unlocks every question and mock test, and removes ads.
Is the app in English or Thai?
The questions are in English, and the explanations are written in Thai, since the app is built for students following the Thai curriculum.
Conclusion
English scores rarely improve from volume alone. They improve when mistakes are understood and revisited until they stop happening. The Mistake Notebook and Smart Review in this M.1-3 English practice app handle that process for you, so all a student has to do is open the app for a few minutes a day and clear what is due. It is free to download, so the first saved mistake can start working for you today.
See all ChatStick apps on the ChatStick developer page on the App Store
Comments