Comparison

Serious Notebook vs Blue Whale PDF

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

Head to head
About

Serious Notebook

A private digital notebook for handwriting, typing, and annotating documents. Import PDFs, scan paper, and organize your thoughts with customizable tools. Keep your work securely on your device with no accounts or tracking.

Highlights
  • Handwrite and sketch with Apple Pencil
  • Type notes and highlight on iPhone
  • Import and annotate PDFs
  • Scan paper into notebooks
  • Insert text boxes, sticky notes, photos, and scans
  • Export notebooks as PDF
Read full description

Your handwriting, PDFs, and ideas. A quieter place to think. Write naturally with Apple Pencil on iPad. Type notes and highlight pages on iPhone. Import a PDF planner, annotate a worksheet, or scan paper into a notebook you can keep working in. Serious Notebook keeps your work on your device, with no account, ads, tracking, or subscription. WRITE, STUDY, AND PLAN • Handwrite and sketch on iPad with pen, pencil, highlighter, and eraser tools. Apple Pencil works on compatible iPads. • Type notes and highlight with your finger on iPhone. • Choose blank, ruled, grid, or dot-grid paper in soft white or cream. • Give each notebook its own title and cover. MAKE DOCUMENTS YOUR OWN • Import PDFs as notebooks and annotate their pages. • Scan paper on supported camera-equipped devices, review the pages, then start writing. • Add text boxes and sticky notes. With lifetime access, insert photos, PDF pages, and scans into your notes. • Move, resize, and rotate inserted objects. • Export a notebook or selected pages as PDF to save or share. NEW IN 3.0 Scan several pages straight into your open notebook as movable objects with lifetime access. Take multiple photos, review them, and add them together. On iPad, a clearer top toolbar leaves more room to write. TRY YOUR OWN NOTES The free workspace includes one handwritten notebook plus one separate PDF or scan notebook, up to 10 pages each. Try the included example without using either allowance. ONE LIFETIME PURCHASE Unlock unlimited notebooks, pages, PDF imports, camera scans, and photo insertion with a single non-consumable purchase. No recurring payments. Existing lifetime customers and eligible original paid-app customers keep access. Restore Purchases is available in Settings. PRIVATE, ON YOUR DEVICE Notes, imported documents, photos, and scans stay on the device where you create them. No app account or document upload is required. Notebooks do not automatically sync between devices. Export PDFs regularly to keep a copy of your work. Purchase and restoration use Apple's App Store services. For class notes, project ideas, PDF planners, and everyday thinking on iPhone and iPad.

About

Blue Whale PDF

This app allows you to scan physical documents into high-quality PDFs, import existing files, and organize your entire document library. It prioritizes user privacy by processing and storing all data locally on your device, ensuring your information remains secure and under your control.

Highlights
  • Scan documents to PDF
  • Import PDFs and images
  • Convert photos to PDF
  • Combine multiple PDFs
  • Organize document library
  • On-device processing
  • No account required
Features
Read full description

Blue Whale PDF is a fast, privacy-focused PDF scanner and document manager that makes it easy to scan, organize, search, and manage your documents. Designed with a clean and intuitive interface, Blue Whale PDF helps you keep all of your important documents in one place while keeping your data on your device. Features • Scan paper documents into high-quality PDF files • Import PDFs and images from Files or Photos • Convert photos into PDF documents • Combine multiple PDF files into a single document • Organize and manage your document library • View PDF documents with a built-in viewer • Rename, share, and delete documents • Fast on-device document processing • Beautiful ocean-inspired interface • No account required Privacy First Your documents are processed and stored locally on your device. Blue Whale PDF does not upload your documents to external servers or collect your personal files. Your information stays under your control.

Screenshots

Serious Notebook4 screens
Blue Whale PDF4 screens

Verdict

The call

The clearest difference is in-app purchases: Blue Whale PDF at none against Serious Notebook's 1. On price, rating, ratings volume and update cadence 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. Serious Notebook sells 1 one-off in-app purchase. Blue Whale PDF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Serious Notebook against 5.0 for Blue Whale PDF. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Serious Notebook ships an update every 3 weeks, Blue Whale PDF fortnightly. Both last shipped on October 31, 2026.

Scorecard2 real differences · 7 level
Serious Notebook versus Blue Whale PDF: the parameters behind the verdict, then further details
ParameterSerious NotebookBlue Whale PDF
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size6 MB3 MB
Age rating4+4+
DeveloperBILGESU KADANEZRA MICHAEL GILBERT

Customer experience

Serious Notebook

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Blue Whale PDF

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Serious Notebook

One-time1
  • Lifetime Unlock$24.99
None

Blue Whale PDF

No in-app purchases

Questions

Is Serious Notebook free?
Serious Notebook is free to download, with in-app purchases available.
Is Blue Whale PDF free?
Blue Whale PDF is free to download, with no in-app purchases.
Which has better reviews, Serious Notebook or Blue Whale PDF?
Serious Notebook and Blue Whale PDF are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Serious Notebook or Blue Whale PDF have ads?
Neither Serious Notebook nor Blue Whale PDF shows ads.
Which is updated more often, Serious Notebook or Blue Whale PDF?
Serious Notebook ships an update every 3 weeks, and Blue Whale PDF fortnightly. Most recently, Serious Notebook was updated on October 31, 2026 and Blue Whale PDF on October 31, 2026.

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