Comparison

CipherNook vs PDF Guru Anki

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

Head to head
About

CipherNook

This app provides a secure, offline sanctuary for your notes, photos, and voice recordings. It uses end-to-end encryption to ensure your data remains private and accessible only to you, with no internet connection or account registration required.

Highlights
  • Fully offline use
  • End-to-end encryption
  • Privacy-focused design
  • No account registration
  • Text, photo, and voice recording support
  • Intuitive interface
Features
Read full description

Welcome to CipherNook: Your Private Encrypted Notepad. In an era where digital acceleration makes our personal information and privacy more vulnerable than ever, CipherNook offers a secure sanctuary for your notes, photos, voice recordings, and more. Designed with privacy protection in mind, this fully offline notepad app ensures your memories are safe, secure, and private. Key Features: Fully Offline Use: No internet connection required. All data is securely stored on your device. End-to-End Encryption: Leveraging advanced encryption technology to protect every entry, ensuring your data remains secure. Privacy First: We respect and protect the privacy of all users. Your data belongs to you alone, inaccessible to developers. User-Friendly: No account registration needed. Start using immediately after installation with an intuitive interface. Versatile Recording Methods: Supports text, photos, and voice recordings to cater to your various recording needs. Data Safety Tips: Users are strongly advised to set a complex password and regularly backup important data to prevent accidental loss. Usage Notice: Please ensure that you have read and agreed to our Terms of Use before using CipherNook. We emphasize data security and privacy, but it's crucial to protect your password since lost data cannot be recovered once the password is forgotten. About Us: CipherNook is developed by a team dedicated to privacy protection and data security. We believe everyone has the right to control their digital information. Should you have any questions or suggestions about CipherNook, please contact us at ciphernook@gmail.com. Download CipherNook now to enjoy a private and secure digital note-taking experience.

About

PDF Guru Anki

This app is a multi-functional office and learning assistant. It offers tools for PDF manipulation, efficient Anki card creation from various document types, Anki synchronization, and video note-taking with timestamp integration for a streamlined study process.

Highlights
  • PDF merging, splitting, rotating, encrypting, and converting
  • Anki card creation from PDFs, Word, Xmind, Markdown, Excel, and WeChat Reading
  • Batch creation of cloze, Q&A, and multiple-choice Anki cards
  • Local area network (LAN) sync server for Anki
  • Video note-taking with timestamp and screenshot insertion
  • Timestamp-based navigation for video notes
  • Seamless import of notes into Anki
Read full description

PDF Guru Anki is a versatile PDF-centric office and learning toolbox software, currently featuring four main functional modules: 1. **PDF Utility Toolkit**: Includes a wide range of highly practical functions such as merging, splitting, rotating, encrypting, and converting PDFs. 2. **Anki Card Creation Tool**: Supports rapid Anki card creation from various types of materials, including PDFs, Word documents, Xmind mind maps, Canvas notes, Markdown files, Excel spreadsheets, and WeChat Reading highlights. It also enables batch creation of common question types like cloze deletions, Q&A, and multiple-choice questions, effectively addressing the complexity and inefficiency of traditional Anki card creation. This saves users significant time, allowing them to focus more on learning itself. 3. **Anki Power Assistant**: Greatly expands Anki’s peripheral functionalities, including features like building a local area network (LAN) sync server, making your Anki experience more seamless and efficient. 4. **Video Note-Taking Tool**: Supports taking notes while watching videos, allowing users to easily insert video timestamps and screenshots into their notes. It also enables timestamp-based navigation for efficient note review. Notes can be seamlessly imported into Anki using the software’s card creation feature, creating a perfect closed-loop learning process from note-taking and summarization to review and memorization. In short, this software is feature-rich and powerful. Mastering its use can significantly enhance both office productivity and learning efficiency, making it an indispensable tool for anyone seeking to optimize their workflow. **Life is short, I use Guru!**

Screenshots

CipherNook4 screens
PDF Guru Anki4 screens

Verdict

The call

The clearest difference is price: PDF Guru Anki at Free against CipherNook's $4.99. PDF Guru Anki also leads on review sentiment (93% vs 50%) and ratings volume (14 vs 1). CipherNook's advantage is in-app purchases (none vs 3) and rating (5.0 vs 4.7). On update cadence, 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

PDF Guru Anki is free to download; CipherNook costs $4.99 up front. PDF Guru Anki sells 3 in-app purchases, starting at $0.99 per month. CipherNook asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CipherNook holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PDF Guru Anki has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of CipherNook's written reviews are positive against 93% of PDF Guru Anki's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 4 level
CipherNook versus PDF Guru Anki: the parameters behind the verdict, then further details
ParameterCipherNookPDF Guru Anki
Price$4.99Free — better
Rating5.0 (1 ratings) — better4.7 (14 ratings)
Positive reviews50.0% of reviews93.3% of reviews — better
Number of ratings114 — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size25 MB240 MB
Age rating4+4+
Developer国喜 宋名杰 王

Customer experience

CipherNook

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

PDF Guru Anki

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews15 reviews
Positive93.3%
Neutral0.0%
Negative6.7%

In-app purchases

None

CipherNook

No in-app purchases

3 purchases

PDF Guru Anki

Subscriptions2
  • Monthly membership3 Days trial$0.991 Month
  • Annual membership3 Days trial$6.991 Year
One-time1
  • Lifetime Membership$14.99

Questions

Is CipherNook free?
CipherNook costs $4.99, with no in-app purchases.
Is PDF Guru Anki free?
PDF Guru Anki is free to download, with in-app purchases available.
Which has better reviews, CipherNook or PDF Guru Anki?
CipherNook is rated higher. CipherNook averages 5.0 out of 5 from 1 ratings, while PDF Guru Anki averages 4.7 from 14 ratings.
Do CipherNook or PDF Guru Anki have ads?
Neither CipherNook nor PDF Guru Anki shows ads.
Which is updated more often, CipherNook or PDF Guru Anki?
CipherNook ships an update every 3 weeks, and PDF Guru Anki every 3 weeks. Most recently, CipherNook was updated on October 6, 2026 and PDF Guru Anki on October 13, 2026.

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