Comparison

N4 読解問題集 vs my books library

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

Head to head
About

N4 読解問題集

Features
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New JLPT N4 Reading Problems, Compliant with the latest JLPT questions, and is accompanied by explanations in Chinese, making it easy to learn the Japanese language. They can be divided into six categories: 1. short articles, 2. correspondence, 3. long articles. There are 16 articles and 37 questions to help you develop your Japanese language skills.

About

my books library

Organize your personal book collection by scanning ISBNs or entering details manually. Access global book data, add personal ratings and notes, and track storage locations. Export your library in various formats and back up to iCloud.

Highlights
  • Scan ISBN or manual entry
  • Global book data catalog
  • Personal ratings and notes
  • Storage location tracking
  • Sort by author, title, rating
  • Export to CSV, PDF
  • iCloud backup
Features
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MyBooks is the best app to display your own library in a list. You can use the ISBN of the book to scan, or you can enter a book manually. Get the data of your book from a global catalog (author, title, publication date, book covers and picture) and store it in your own database. You can enter your personal rating to each book or each author, so you still know after years how you liked the book. Likewise, you can add in a memo field a comment on the book. You can add a location (f. e. living room, bedroom ...) , where your book is stored. You can sort the list by author, title or rating, series and all the other fields..... You can view the list in different formats Export: CSV: Numbers, Excel, PDF. Backup your data to iCloud, so you can manage your data on all your devices. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

N4 読解問題集4 screens
my books library4 screens

Verdict

The call

The clearest difference is price: my books library at Free against N4 読解問題集's $9.99. my books library also leads on update cadence (every 5 days vs every 21 months). N4 読解問題集's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

my books library is free to download; N4 読解問題集 costs $9.99 up front. my books library sells 3 in-app purchases, starting at $1.99 per month. N4 読解問題集 asks for nothing beyond the download.

UpkeepUpdate frequency

N4 読解問題集 ships an update every 21 months, my books library every 5 days. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
N4 読解問題集 versus my books library: the parameters behind the verdict, then further details
ParameterN4 読解問題集my books library
Price$9.99Free — better
Rating—4.3 (21 ratings) — better
Positive reviews—71.4% of reviews
Number of ratings—21 — better
Update frequencyEvery 21 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.216.0 — better
Further details — not scored
Size2 MB62 MB
Age rating4+4+
DeveloperYamase & Touwa Japanese InsitituteAndrea Schmerber

In-app purchases

None

N4 読解問題集

No in-app purchases

3 purchases

my books library

Subscriptions2
  • Premium monthly$1.991 Month
  • Premium yearly$17.991 Year
One-time1
  • Premium full version$49.99

Questions

Is N4 読解問題集 free?
N4 読解問題集 costs $9.99, with no in-app purchases.
Is my books library free?
my books library is free to download, with in-app purchases available.
Do N4 読解問題集 or my books library have ads?
Neither N4 読解問題集 nor my books library shows ads.
Which is updated more often, N4 読解問題集 or my books library?
N4 読解問題集 ships an update every 21 months, and my books library every 5 days. Most recently, N4 読解問題集 was updated on November 1, 2026 and my books library on October 24, 2026.

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