Comparison

ivySCI vs CAJ阅读器

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

Head to head
About

ivySCI

This app helps researchers manage and read scientific papers efficiently. It automatically extracts metadata, offers AI-assisted reading and proofreading, and allows for easy note-taking and citation integration with word processors.

Highlights
  • Automatic PDF metadata identification
  • AI-assisted reading and Q&A
  • Built-in translation and dictionary
  • Reference extraction and download
  • Image extraction and side-by-side viewing
  • Cloud-synced notes across devices
  • Word processor citation plugin
Features
Read full description

ivySCI is dedicated to providing thoughtful and intelligent literature reading and management tools for researchers, helping them save valuable time and focus more effectively on their research, rather than getting bogged down in time-consuming literature management, especially the tedious task of formatting references for graduate theses. As your helpful assistant, ivySCI offers a comprehensive range of services from the outset, including: 1. After you import PDF documents, we automatically identify the metadata of each paper, including titles, authors, abstracts, DOIs, journals, and important journal impact factors (CiteScore). 2. For each document, we provide built-in translation and dictionary lookup to overcome language barriers. 3. We offer AI-assisted reading for each document, providing quick answers to your questions. In the Mac version, we also provide AI proofreading and translation functions. 4. We analyze each document so that you can access references directly when needed, without flipping to the end of the paper. After viewing the references, you can decide whether to download them. You can customize the download engine to provide more channels to help you find the required literature faster. 5. We extract images from papers and provide side-by-side text and image viewing when necessary. You can zoom in or out on images to focus on specific details. 6. We analyze the PDF structure and present it in an outline format. Thumbnails are also available for viewing. 7. You can create notes on any device, and these notes are shared via the cloud for easy access anytime, anywhere. 8. Your literature and notes are associated with your account, so you can use them on any device (including iPhone, iPad, and Mac) after logging in. 9. When writing in Word or WPS, you can cite literature and notes at any time using the ivyCite plugin provided by ivySCI. This ensures that your thought process remains uninterrupted. ivySCI offers various client options tailored to research needs, including Mac and PC, iPad, and iPhone. Each device serves a different purpose, with desktop versions offering comprehensive management capabilities, iPad versions focused on reading and basic operations, and iPhone versions providing basic information access. Depending on the intelligence analysis capabilities and the limitations of different PDF formats, some features may not be available, but we continuously optimize the engine.

About

CAJ阅读器

This app is a professional reader for CAJ documents, supporting academic papers, journals, and magazines. It also offers conversion tools to transform CAJ files into Word or PDF, and handles various PDF format conversions with other office documents.

Highlights
  • CAJ document viewing
  • CAJ to Word conversion
  • CAJ to PDF conversion
  • PDF to Office file conversion
  • Supports academic papers and journals
Features
Read full description

CAJ全文浏览阅读器! 专业CAJ文档阅读器,可用于报刊、文献、杂志、论文等的阅读软件。 还支持caj格式转换,快速将CAJ转成Word、CAJ转成PDF; 还支持PDF格式转换,支持多种PDF格式与word、excel、ppt等文件格式互转。 会员订阅: 订阅价格为每年88元、每月18元,免费试用3天,到期自动续费。 订阅会自动续订,除非在当前期间结束前至少24小时关闭自动续订;帐户将在当前期间结束前24小时内收取续订费用,并确定续订费用 订阅可以由用户管理,并且可以在购买后转到用户的AppStore帐户设置来关闭自动续订 隐私条款:https://blog.csdn.net/m0_74390048/article/details/130128465 使用条款:https://blog.csdn.net/m0_74390048/article/details/130128542

Screenshots

ivySCI4 screens
CAJ阅读器3 screens

Verdict

The call

The clearest difference is review sentiment: ivySCI at 80% against CAJ阅读器's 0%. ivySCI also leads on rating (4.6 vs 4.3). CAJ阅读器's advantage is iOS requirement (11.0 vs 15.5). On price, ratings volume, update cadence and ads 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. ivySCI sells 3 in-app purchases, starting at $2.99 per month and CAJ阅读器 sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ivySCI holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 9 and 11 respectively. Written reviews point the same way: 80% of ivySCI's written reviews are positive against 0% of CAJ阅读器's.

UpkeepUpdate frequency

ivySCI ships an update fortnightly, CAJ阅读器 every 11 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
ivySCI versus CAJ阅读器: the parameters behind the verdict, then further details
ParameterivySCICAJ阅读器
PriceFreeFree
Rating4.6 (9 ratings) — better4.3 (11 ratings)
Positive reviews80.0% of reviews — better0.0% of reviews
Number of ratings911 — better
Update frequencyFortnightlyEvery 11 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.511.0 — better
Further details — not scored
Size66 MB45 MB
Age rating4+4+
DeveloperNanjing IvyScience Information Technology Co., Ltd.Light Speed Intelligence Technology Co., Ltd.

Customer experience

ivySCI

All ratings9 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

CAJ阅读器

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

3 purchases

ivySCI

Subscriptions3
  • ivySCI VIP Monthly Service$2.991 Month
  • Annual VIP Subscription$29.991 Year
  • Annual AI Pro Subscription$39.991 Year
3 purchases

CAJ阅读器

Subscriptions2
  • 月会员3 Days trial$2.991 Month
  • 年会员3 Days trial$12.991 Year
One-time1
  • 永久会员$14.99

Questions

Is ivySCI free?
ivySCI is free to download, with in-app purchases available.
Is CAJ阅读器 free?
CAJ阅读器 is free to download, with in-app purchases available.
Which has better reviews, ivySCI or CAJ阅读器?
ivySCI is rated higher. ivySCI averages 4.6 out of 5 from 9 ratings, while CAJ阅读器 averages 4.3 from 11 ratings.
Do ivySCI or CAJ阅读器 have ads?
Neither ivySCI nor CAJ阅读器 shows ads.
Which is updated more often, ivySCI or CAJ阅读器?
ivySCI ships an update fortnightly, and CAJ阅读器 every 11 days. Most recently, ivySCI was updated on October 24, 2026 and CAJ阅读器 on October 24, 2026.

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