Comparison

ぐるどく vs Mobile Bookshelf

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

Head to head
About

ぐるどく

Features
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ぐるどくアプリは、グループで EPUB ファイルを読む際に便利なリーダーアプリです。気になる文章を長押しして選択し、リーダー下部のコメントボタンを押せば選択した文章に対してコメントすることが出来ます。これにより「自分とは立場の異なる人はどういう感想を抱くのか?」「読んでいてわからなかった部分の議論になる」などを始めとしたことが起こり、書籍に対する理解や見識を深めることができます。 活用方法はさまざまです。ソフトウェアエンジニアがよくおこなっている輪読会に利用することができます。チームビルディングの際の共通認識を作るために書籍を読み合わせるときにも活用できるでしょう。夫婦で子育てに関する書籍をぐるどくで読み、コメントしてそれぞれの考え方を理解する手助けになることもあるでしょう。ぜひご利用いただいて、皆様のご活用方法をお教えいただけると嬉しいです。

About

Mobile Bookshelf

Features
Read full description

The Ultimate App for Managing Your Books and Tracking Your Reading. With Mobile Bookshelf – Reading Log, your personal bookshelf is always at your fingertips! Easily keep track of your reading history, too. Manage your entire collection of books conveniently from your smartphone. You can also easily manage your reading progress – track which books you've read, when you read them, or if you're still reading. As an avid reader who often buys and records books, I developed this app based on what I personally wanted. I hope you enjoy using it. [FAQ] Q: Isn't adding books to the app a hassle? A: Not at all! You can easily retrieve book information by scanning barcodes – no manual input required. Q: Can I add eBooks too? A: Yes! You can manually add eBooks. And in the future, we plan to add a keyword search feature so you can easily fetch book details from search results, making eBook registration even easier. Q: I often forget what each book was about... A: No worries. With the tagging feature, you can link custom keywords to your books. You can quickly find what you're looking for by searching by tags in the book list. Since there's no fixed genre system, the tagging system offers high flexibility and ease of use. [Features Available by Plan] Free Plan – Add and Update book information (up to 100 books) – Retrieve book details by barcode scanning – Book Stats & Charts – Add and Update tags (unlimited) – Use tags for searching and organizing Standard Plan – All features from the Free Plan – Add and Update book information (up to 500 books) Advanced Plan – All features from the Standard Plan – Add and Update unlimited books Prices and features are subject to change. [Payment Information for Paid Plans] Payments will be charged to your App Store account and will automatically renew each month. [Details About Auto – Renewal] Unless canceled at least 24 hours before the end of the subscription period, your subscription will automatically renew each month. [Checking Subscription Status & Cancelation] You can check or cancel your subscription from the Settings app on your device. For details, visit Apple Support: https://support.apple.com/118428 [Terms of Service] https://www.houkagomotokiclub.com/activity/app/bookManager/agreement/ios [Privacy Policy] https://www.houkagomotokiclub.com/activity/app/bookManager/policy

Screenshots

ぐるどく1 screens
Mobile Bookshelf4 screens

Verdict

The call

The clearest difference is update cadence: ぐるどく at every 2 weeks against Mobile Bookshelf's every 2 months. On price, ads, in-app purchases and device support 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

Both are free to download. ぐるどく sells 1 one-off in-app purchase and Mobile Bookshelf sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ぐるどく ships an update every 2 weeks, Mobile Bookshelf every 2 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 5 level
ぐるどく versus Mobile Bookshelf: the parameters behind the verdict, then further details
ParameterぐるどくMobile Bookshelf
PriceFreeFree
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.5
Further details — not scored
Size66 MB37 MB
Age rating4+4+
DeveloperMAKASETE, Inckouten motoki

In-app purchases

1 purchases

ぐるどく

One-time1
  • コメントの閲覧・投稿機能の利用$5.99
2 purchases

Mobile Bookshelf

Subscriptions2
  • Standard Plan$0.991 Month
  • Advance Plan$1.991 Month

Questions

Is ぐるどく free?
ぐるどく is free to download, with in-app purchases available.
Is Mobile Bookshelf free?
Mobile Bookshelf is free to download, with in-app purchases available.
Do ぐるどく or Mobile Bookshelf have ads?
Neither ぐるどく nor Mobile Bookshelf shows ads.
Which is updated more often, ぐるどく or Mobile Bookshelf?
ぐるどく ships an update every 2 weeks, and Mobile Bookshelf every 2 months. Most recently, ぐるどく was updated on October 9, 2026 and Mobile Bookshelf on October 15, 2026.

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