Comparison

Answell vs DSE MistakeBook

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Answell

Features
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Answell is your AI-powered study companion for IELTS and other major exams, including the HKDSE. Generate unlimited mock questions and full exam papers modelled on real past papers, then practise at your own pace with instant feedback. WHAT YOU CAN DO • Prepare for IELTS and exams like the HKDSE, matched to each exam's structure • Practise by subject, topic and subtopic at your own pace • Generate fresh mock questions and complete exam papers on demand • Sharpen your IELTS Speaking with guided practice prompts and coaching • Review model answers and worked explanations for every question • Track your progress and spot weak topics before exam day • Study anywhere with a fast, native experience Whether you are working towards IELTS, the HKDSE or another exam, every question reflects what you will actually face. From revising a single topic to sitting a timed mock paper, Answell helps you prepare with focus. Answell is free to start. An optional Answell Pro subscription (monthly or yearly) unlocks unlimited question and exam-paper generation and full access to every subject and topic. Payment is charged to your Apple ID; the subscription renews automatically unless cancelled at least 24 hours before the period ends, and can be managed in your App Store account settings. Terms of Use: https://answell.io/terms Privacy Policy: https://answell.io/privacy

About

DSE MistakeBook

Features
Read full description

Turn wrong answers into marks on the next exam. Mistake Book is a private mistake journal for students. Photograph a question you got wrong, review it before you forget, and quiz yourself on your own errors — so the same slip does not cost you again. HOW IT HELPS YOU SCORE Exams reward what you can still recall under pressure. Logging every mistake, then coming back on a schedule, is one of the most reliable ways to raise your result. Mistake Book follows the forgetting curve (1, 3, 7, and 14 days) so you revise while the memory is still there to save. CAPTURE IN SECONDS • Take a photo, pick from your album, or type the question • On-device OCR for Traditional Chinese and English — then edit any line • Save the correct answer, your wrong answer, and why you missed it • Tag by subject, topic, and mistake type REVIEW BEFORE YOU FORGET • A due list for today — mark a question reviewed when you are done • Local reminders: daily when items are due, plus a weekly progress summary • Study quiz: up to 3 past mistakes, even if they are not due yet • Reveal the answer only after you have tried it in your head SEE WHERE TO WORK HARDER • Totals, this week, due vs up to date • Breakdowns by subject and mistake type • Share a summary card when you want a snapshot of your progress YOUR DATA STAYS ON THIS IPHONE No account. No upload. Camera and Photos are used only to capture questions on this device. Export a ZIP backup from Settings, or import one to restore your library. Built for students who study in English and Traditional Chinese — keep every mistake in one place, and walk into the next exam better prepared.

Screenshots

Answell3 screens
DSE MistakeBook4 screens

Verdict

The call

The clearest difference is in-app purchases: DSE MistakeBook at none against Answell's 2. DSE MistakeBook also leads on ads (none vs shown). Answell's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Answell sells 2 in-app purchases, starting at $3.99 per month. DSE MistakeBook asks for nothing beyond the download.

UpkeepUpdate frequency

Answell ships an update every 4 days, DSE MistakeBook every 2 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

Scorecard4 real differences Ā· 2 level
Answell versus DSE MistakeBook: the parameters behind the verdict, then further details
ParameterAnswellDSE MistakeBook
PriceFreeFree
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size141 MB2 MB
Age rating4+4+
DeveloperKAM CHEUNG WongYin Man Cheung

In-app purchases

2 purchases

Answell

Subscriptions2
  • Answell Pro (Monthly)1 Month trial$3.991 Month
  • Answell Pro (Yearly)7 Days trial$34.991 Year
None

DSE MistakeBook

No in-app purchases

Questions

Is Answell free?
Answell is free to download, with in-app purchases available.
Is DSE MistakeBook free?
DSE MistakeBook is free to download, with no in-app purchases.
Do Answell or DSE MistakeBook have ads?
Answell shows ads; DSE MistakeBook does not.
Which is updated more often, Answell or DSE MistakeBook?
Answell ships an update every 4 days, and DSE MistakeBook every 2 weeks. Most recently, Answell was updated on October 17, 2026 and DSE MistakeBook on October 16, 2026.

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