Apps by 建春 张
Error Note app icon

Utilities

Error Note

建春 张

$0.99 In-app purchases unconfirmed
Open on Apple

About this app

Error Note — Study Smarter with Your Own Error Notebook Error Note is a simple but powerful tool designed to help students and exam-takers improve faster by reviewing past mistakes. Capture your wrong questions, organize them by subjects, and understand your weak points through clear statistics and structured review tools. Whether you are preparing for exams, learning new subjects, or trying to build better study habits, Error Note helps you focus on what truly matters: learning from your mistakes. Key Features 1. Add Mistakes Easily Record wrong questions using text, photos, or quick notes. Supports multiple subjects such as Mathematics, English, History, and more. 2. Organize by Subject and Topic Create your own subjects or chapters. Group mistakes logically and access them at any time. 3. Smart Review System Tag difficulty levels, set review reminders, and study using spaced repetition. Improve memory efficiently with guided practice. 4. Error Statistics and Weak Point Analysis See which subjects you struggle with the most. Track your progress over time and identify where to focus next. 5. Print Review Sheets Generate printable versions of selected questions, with or without answers. Ideal for exam preparation and offline study. Why Choose Error Note * Focus on mistakes that matter * Learn faster with targeted review * Build strong and consistent study habits * Track improvement clearly over time * Simple, fast, and distraction-free Error Note is a reliable companion for long-term learning and exam preparation. Study less, learn more, and make every mistake count.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 15, 2026 · 0 ratings Aug 15, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current $0.99
Historical low USD 0.99
Paid → free
Price history
Current $0.99
$0.99 $0.50 Free Aug 15, 2026 · $0.99 Aug 15, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 15, 2026 · 1:21 PM $0.99

Screenshots

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