Comparison

DoCube vs ReadLre

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

Head to head
About

DoCube

This app transforms reading into knowledge retention with features like multi-tab browsing, precise document navigation, and versatile annotation tools. It supports various formats and converts highlights into flashcards for effective memorization and review.

Highlights
  • Multi-tab reading for multiple documents
  • Precise document positioning and history navigation
  • Support for PDF, EPUB, Markdown, and web pages
  • Six annotation tools including highlights and notes
  • Cross-document linking for knowledge networks
  • Automatic flashcard creation from highlights
  • AI-enhanced card generation
Features
Read full description

DoCube is a multi-format reader and personal knowledge base built for deep reading. Bring PDFs, EPUBs, local videos, web snapshots, Markdown, and organized scanned documents into one library. Annotate, link, search, translate, export, and review while you read or watch. Your materials are not merely stored—they gradually become knowledge you can retrieve, connect, and remember. 【Deep Reading Across Formats】 DoCube supports PDFs, EPUBs, local videos, offline webpages, Markdown, and parsed documents. Whether you work with research papers, ebooks, web articles, course videos, lectures, interviews, or your own Markdown notes, you can read, watch, and manage them together in DoCube. 【Deep Study for Video】 Import local videos and study courses, lectures, and interviews as deeply as documents. DoCube can read embedded subtitles and, on supported devices, generate subtitles for videos that do not have them. Search subtitles; switch between original, translated, and bilingual views; annotate subtitles; use chapter outlines, playback speeds, and A/B looping. Open a search result, annotation, or chapter to return to the exact moment, turning video into knowledge you can retrieve, connect, and review. 【Multi-Tab Reading】 Open multiple documents and videos in tabs, just like a browser, and switch quickly between materials. Read a paper, compare references, watch a course, or return to where you left off without losing context. 【Annotations and Notes in Context】 Use highlights, underlines, strikethroughs, quotations, links, and Markdown notes directly on source text or at a precise location in video subtitles. Your thinking stays connected to its context. 【Link Materials Together】 DoCube can link an annotation in a document or video to a precise location in another resource. Connect scattered chapters, paragraphs, webpages, video clips, and notes into your own paths through knowledge. 【Search What You Have Read and Watched】 Search not only titles and body text, but also video subtitles, highlights, quotations, links, notes, and cards. Anything you have read, watched, marked, or written can help you find the right material again. 【Keep Reading in Other Languages】 Translate selected text while reading. Some document types support full-document translation and translated exports, while videos support subtitle translation and original, translated, or bilingual display. Read foreign papers, webpages, ebooks, and course videos without constantly switching tools. 【From Annotation to Review】 Turn important content from documents and videos into review cards. Flip cards, mask cards, and review plans bring what you have read and watched back at the right time, instead of letting it disappear after you finish. 【Export and Sync】 Export document content and translations to common formats, including bilingual versions. DoCube is available on iPhone, iPad, and Mac, with iCloud sync and local Wi-Fi transfer. Ideal for: - People who read research papers and professional materials - Learners organizing PDFs, EPUBs, webpages, Markdown, and videos - People who study long-term with course, lecture, and interview videos - Deep readers who want annotations, notes, and review in one loop - Anyone building a personal knowledge base instead of merely collecting files The free version manages up to 5 documents and lets you experience the core reading and knowledge-management workflow. Upgrade to Pro to remove the document limit and build an unrestricted personal library.

About

ReadLre

This app offers a pure reading experience with support for numerous e-book and compressed file formats. Customize themes, backgrounds, and reading methods, with options for automatic reading and text-to-speech. Track your reading progress and sync data across devices via iCloud.

Highlights
  • Supports 10+ e-book formats
  • Supports 8+ compressed file formats
  • Customizable themes and backgrounds
  • Automatic reading and text-to-speech
  • iCloud synchronization
  • Global book content search
  • Note search functionality
Read full description

ReadLre - Let reading return to nature and bring you the purest reading experience. - Supports most e-book formats on the market: txt, rtf, epub, pdf, chm, djvu, mobi, azw3, azw4, azw, fb2, cbr, cbz - Supported font formats: ttf, otf, support importing third-party fonts - Supported compressed file formats: zip, rar, 7z, tar, gz, bz2, xz, books or fonts in these compressed file formats are automatically decompressed when imported - Rich theme colors and backgrounds can be configured arbitrarily, and the interface layout can be easily set - Automatic reading supports page turning and scrolling, allowing you to adjust the reading method that suits you at will - One-click start of listening to books, multiple system voices are optional - Support importing external background images to set a personalized reading interface - Detailed reading statistics, so that your reading history is clear at a glance - Support iCloud synchronization, all books, notes and configuration data are shared on multiple devices - Support changing book covers - Support global search of book content, so that the target will not be missed - Support note search, easy access to important records After confirming the order, the payment will be deducted from your iTunes account. Subscriptions will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Accounts will be charged for renewal within 24 hours before the end of the current period. You can manage your subscription and turn off auto-renewal by visiting your account settings after purchase. Terms of Use: https://gitee.com/cvbn01/Terms-of-Service/raw/main/Terms-of-Service Privacy Policy: https://gitee.com/cvbn01/Privacy-Policy/raw/main/PrivacyPolicy

Screenshots

DoCube4 screens
ReadLre4 screens

Verdict

The call

The clearest difference is review sentiment: DoCube at 100% against ReadLre's 0%. DoCube also leads on rating (4.6 vs 1.5) and ads (none vs shown). ReadLre's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (14.0 vs 17.0). On price, in-app purchases, monetization model 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. DoCube sells 1 one-off in-app purchase and ReadLre sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DoCube holds the better App Store score, 4.6 against 1.5. That said, the two scores are not equally well evidenced: DoCube has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of DoCube's written reviews are positive against 0% of ReadLre's.

UpkeepUpdate frequency

DoCube ships an update every 3 weeks, ReadLre weekly. The most recent releases landed on September 5, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 4 level
DoCube versus ReadLre: the parameters behind the verdict, then further details
ParameterDoCubeReadLre
PriceFreeFree
Rating4.6 (11 ratings) — better1.5 (2 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings11 — better2
Update frequencyEvery 3 weeksWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size91 MB49 MB
Age rating17+4+
Developer巍 赵侠光 邢

Customer experience

DoCube

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ReadLre

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

DoCube

One-time1
  • Full-platform Professional Edition$34.99
3 purchases

ReadLre

Subscriptions2
  • Monthly subscription$0.991 Month
  • Yearly subscription$6.991 Year
One-time1
  • ReadLre Pro$9.99

Questions

Is DoCube free?
DoCube is free to download, with in-app purchases available.
Is ReadLre free?
ReadLre is free to download, with in-app purchases available.
Which has better reviews, DoCube or ReadLre?
DoCube is rated higher. DoCube averages 4.6 out of 5 from 11 ratings, while ReadLre averages 1.5 from 2 ratings.
Do DoCube or ReadLre have ads?
ReadLre shows ads; DoCube does not.
Which is updated more often, DoCube or ReadLre?
DoCube ships an update every 3 weeks, and ReadLre weekly. Most recently, DoCube was updated on September 5, 2026 and ReadLre on September 24, 2026.

Other comparisons