Comparison

Smooth Reader vs ムー

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

Head to head
About

Smooth Reader

This app offers a fast and smooth PDF reading experience, mimicking the feel of physical books. It features a unique "Home View" for enlarged text reading and a dynamic 3D perspective library for easy book discovery and organization.

Highlights
  • Smooth page turning
  • Home View for enlarged text
  • 3D perspective book library
  • Book categorization with tags
  • Smart tags for new/recent books
  • Bookmark management
  • Table of contents support
Read full description

"Smooth Reader" is a fast PDF reader that enables smooth and fast page turning like real printed books. (1)The most distinguished feature is "Home View" function which enables you to read books with large characters. If you set Home View for the area you want to zoom, you can read the area in full screen. Only with flick or tap operation, you can keep reading pages with large characters. (2)In addition, you can get a "3D perspective view" of book cover thumbnails, and the books move by automatically. Thus you can find desired books easily and enjoy as if you walked along the shelf in a real bookstore. (3)Have trouble organizing your books on the shelves? "Smooth Reader" can help you organize many books efficiently and effectively. With the "Book Categories Tags" functions, you can put tags on your favorite books and break them into categories. Your books with the tags are instantly lined up by category on the shelf. Since you can easily create or delete the tags and put multiple tags on one book, you can organize your books into categories in different ways. The books you newly registered or recently read are automatically attached with "New" tags or "Recently Read" tags respectively and organized on the shelf (Functions called "Smart Tags"). 【Functions】 [Supported file format] - PDF [Reading Direction] - Left to Right, Right to Left, or Up to Down [Two-page Spread] - One page or Two-page spread (supporting both horizontal and vertical direction of iPad) [Page turning] - Flick, Tap, or Touch and hold operation(consecutive page turning) (When two-page spread, one-page or two-page turning is possible in one action) [Reading Function] - Page thumbnails using pinch-in operation. (requires iOS 6 or later) - Support of table of contents (outline) embedded in PDF. - Bookmarks (add, jump, delete, edit) - PDF link jump (page, URL, mail address) [Home View Function] - Function to keep reading pages with large characters. If you set Home View for the area you want to zoom, you can keep reading the area in full screen. With drag or flick operation, you can also read pages outside of the area. Only with flick or tap operation, you can keep reading pages with large characters. [File storage] - Storeroom (where all files are stored) - Library (where only tagged files are lined up) [Book categories tags] - Create, delete, rename, and arrange the order - Smart tags feature ("New", "Recently Read") [File info] - Book cover(thumbnail) format or List format - 3D perspective view in Book cover format. - File name, file size, last modified date, total number of pages, current page number, and author name(from PDF property). - In order of file name, last modified date, last access date, registered date, or author name [File management] - File deletion - File rename [File import] - Transfer using the file-sharing function of iTunes. - Download using built-in web browser function - Download using Safari or Mailer via Open-in feature [Other functions] - Retina display support, Help function [Language] - English, Japanese, Chinese(Simplified), Korean * The books in the screenshots above are sample images, they are not included in this app.

About

ムー

Features
Read full description

世界の謎と不思議に挑戦する日本で唯一のオカルト専門誌です。UFO、超能力、UMA、超常現象、古代文明、スピリチュアル、都市伝説など、毎号、世界中で起こりつづける不思議情報を紹介しています! 本アプリケーションはNewsstandに対応しています。 アプリは無料でダウロードできますが、コンテンツの購入は有料です。 コンテンツのダウンロードは、WiFi環境での接続を推奨いたします。 電子版では、紙の雑誌と一部内容が異なる場合や、マスキングされた写真、掲載のないページがある場合がございます。あらかじめご了承ください。 ■新刊の自動ダウンロード機能について iOSの設定のアプリの「通知」と「Appのバックグラウンド更新」 をオンに設定すると、ライセンス期間中に新しいコンテンツが発行された際に自動的に端末(本棚)にダウンロードされます。 ■定期購読の自動更新と課金について  購読は「自動継続更新」となります。購読期間が終了する24時間以内に、購読が自動更新され、お客様のApple IDに課金されます。 ■定期購読の設定の確認と自動更新の停止について  ライセンス期間終了の24時間以上前に、設定画面から自動更新をオフにしていただくことで、自動更新を停止することができます。  自動更新の設定は、「設定」>「Apple IDタップ」>「サブスクリプション」から行うことができます。 ■定期購読のキャンセルについて  定期購読期間中は、期間の変更やキャンセルをすることができません。 プライバシーポリシー及び利用規約: https://www.corp-gakken.co.jp/privacypolicy/

Screenshots

ムー1 screens

Verdict

The call

The clearest difference is price: ムー at Free against Smooth Reader's $3.99. ムー also leads on device support (3 vs 1) and iOS requirement (9.0 vs 15.5). Smooth Reader's advantage is update cadence (every 2 months vs every 40 months). On ads and in-app purchases 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

ムー is free to download; Smooth Reader costs $3.99 up front. Smooth Reader sells 10 one-off in-app purchases and ムー sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Smooth Reader ships an update every 2 months, ムー every 40 months. The most recent releases landed on June 5, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 6 level
Smooth Reader versus ムー: the parameters behind the verdict, then further details
ParameterSmooth Readerムー
Price$3.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 months — betterEvery 40 months
AdsNoNo
In-app purchasesYesYes
MonetizationPaid—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS15.59.0 — better
Further details — not scored
Size34 MB21 MB
Age rating17+4+
DeveloperPersonal Media Corp.Gakken CO.,LTD

In-app purchases

10 purchases

Smooth Reader

One-time10
  • TRONWARE VOL.178$6.99
  • TRONWARE VOL.173$6.99
  • TRONWARE VOL.176$6.99
Show 7 more
  • TRONWARE VOL.174$6.99
  • TRONWARE VOL.175$6.99
  • TRONWARE VOL.172$6.99
  • TRONWARE VOL.177$6.99
  • TRONWARE VOL.180$6.99
  • TRONWARE VOL.179$6.99
  • TRONWARE VOL.181$6.99
3 purchases

ムー

Subscriptions3
  • mu$6.991 Month
  • mu$17.493 Months
  • mu$33.996 Months

Questions

Is Smooth Reader free?
Smooth Reader costs $3.99, and also offers in-app purchases.
Is ムー free?
ムー is free to download, with in-app purchases available.
Do Smooth Reader or ムー have ads?
Neither Smooth Reader nor ムー shows ads.
Which is updated more often, Smooth Reader or ムー?
Smooth Reader ships an update every 2 months, and ムー every 40 months. Most recently, Smooth Reader was updated on June 5, 2026 and ムー on September 21, 2026.

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