Comparison

Notes Writer vs Obsidian

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

Head to head
About

Notes Writer

This app is a comprehensive note-taking and PDF editing solution for mobile devices. It allows users to write, format, and organize notes, annotate PDFs, fill forms, and scan documents. The app offers advanced editing tools, powerful search, and seamless sharing and export options.

Highlights
  • Write and format notes
  • Annotate PDFs and fill forms
  • Organize with unlimited notebooks
  • Powerful full-text search
  • Document scanning
  • Sync with cloud services
  • Export to multiple formats
Features
Read full description

Every note. Every format. Unlimited Digital Notebooks. Like paper, but better. Take lecture notes, prepare for exams and develop your research. Bring the same tools to manuscripts, interviews, lesson plans, meetings and creative projects. Notes Writer keeps your work together on iPad, iPhone and compatible Apple silicon Macs. Designed for students and anyone who wants to learn, create and stay organized—including teachers, writers, journalists, doctors, architects, illustrators, mathematicians, researchers and business professionals. WRITE & CAPTURE • Handwriting, sketching & painting Take handwritten notes with Apple Pencil, type a document or explore a concept through drawing. Use dedicated sketching, watercolor and oil painting tools for illustrations and creative work. • PDF annotation Review lecture slides, medical literature and professional reports. Highlight PDFs, add comments, images and shapes, fill forms and sign documents. Keep your annotations beside the source material. • Recording & transcription Record lectures, business meetings and interviews, transcribe the audio and search the transcript for the detail you need. Add recordings to PDF notes and whiteboards, then listen back at your own pace. STUDY & RESEARCH • Courses, manuscripts & research projects Choose an optional project tree to arrange topics, sources and drafts in a Study Project. Use the Binder for structure, the Corkboard to plan sections and compilation to assemble a document or ebook. • Whiteboards, diagrams & outlines Create whiteboards with notes, images, recordings and tables. Build flowcharts and diagrams to explain a process, compare findings or plan a lesson or project. Use Outline Notes when your ideas need a hierarchy. • Flashcards & review Create flashcards with text, handwriting and images, or generate them from notes and PDFs with optional AI tools. Review with spaced repetition, answer by typing or speaking, and track your progress. MATH & SCIENCE • Calculations, Python & charts Math Notebooks combine written reasoning, symbolic calculations and Python cells. Plot results, explore a model and present your data in editable Chart documents. • LaTeX & technical PDFs Write technical papers in LaTeX and compile them to PDF with a preview of the result. For plans and technical drawings, set a scale and measure distances, perimeters and areas directly on the PDF. ORGANIZE & SHARE • Notebooks, folders & templates Create and customize folders, subfolders and notebooks. Choose names, covers and paper templates that suit each course or project. Scan handouts, search your collection and manage documents with sorting, moving and grouping tools. • Documents side by side Open documents in tabs and work with your reading and draft side by side. Create a study planner, lesson plan, research journal or manuscript within the same library. • Formats for your work Work across PDF, Microsoft Word (DOCX), EPUB, RTF, Markdown, plain text (TXT), HTML, LaTeX and OPML outlines. Edit formatted documents, read ebooks and export supported documents as PDF, DOCX, RTF, HTML or EPUB. Export options vary by document type. • Sync, backup & privacy Sync with iCloud and work with Dropbox and Google Drive files through the Files app, with changes synced by your provider. Set up automatic document backups, use autosave and recovery, and protect the app and folders with a passcode. OPTIONAL AI ASSISTANT Ask questions about your notes and documents, simplify an explanation, summarize a reading or refine your writing. Use translation, grammar and tone tools when they help. Review every suggestion and decide what belongs in your work. Start a notebook. Study, create and work your way. Privacy Policy http://www.noteswriter.com/Kairoos_Privacy_Policy.html Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Obsidian

Organize your thoughts and ideas with a powerful knowledge base that utilizes local Markdown files. This app acts as your personal second brain, accessible on your mobile device for seamless note-taking and idea connection.

Highlights
  • Local Markdown file storage
  • Customizable toolbar
  • Graph view for connections
  • Community plugins
  • Themes
  • iCloud sync
Features
Read full description

Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files. It is a second brain, for you, forever. Now available on the go for iOS! Features include: - Customizable toolbar - Pull down quick actions - Graph view - Community plugins - Themes - Sidebar pinning for tablet - iCloud vaults

Screenshots

Notes Writer4 screens
Obsidian4 screens

Verdict

The call

The clearest difference is in-app purchases: Obsidian at none against Notes Writer's 9. Obsidian also leads on review sentiment (62% vs 45%) and chart position (#119 vs unranked). Notes Writer's advantage is update cadence (every 4 days vs every 3 weeks). On price, rating, ratings volume 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. Notes Writer sells 8 in-app purchases, starting at $1.99 per 7 days. Obsidian asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Notes Writer against 4.5 for Obsidian. Both are backed by a comparable volume of ratings — 7.3K and 2.8K respectively. Written reviews are what separate them: 45% of Notes Writer's written reviews are positive against 62% of Obsidian's.

UpkeepUpdate frequency

Notes Writer ships an update every 4 days, Obsidian every 3 weeks. Both last shipped on November 1, 2026.

Scorecard6 real differences · 5 level
Notes Writer versus Obsidian: the parameters behind the verdict, then further details
ParameterNotes WriterObsidian
PriceFreeFree
Rating4.5 (7.3K ratings) — better4.5 (2.8K ratings)
Positive reviews45.0% of reviews61.9% of reviews — better
Number of ratings7.3K — better2.8K
Update frequencyEvery 4 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank—#119 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.6 — better
Further details — not scored
Size660 MB40 MB
Age rating4+4+
DeveloperKairoos Solutions SLDynalist Inc.

Customer experience

Notes Writer

All ratings7,332 ratings
Positive86.8%
Neutral5.1%
Negative8.1%
Written reviews963 reviews
Positive45.0%
Neutral15.1%
Negative40.0%

Obsidian

All ratings2,757 ratings
Positive85.6%
Neutral4.0%
Negative10.5%
Written reviews1,347 reviews
Positive61.9%
Neutral12.0%
Negative26.1%

User reviews

Notes Writer

From 7.3K App Store ratings

What we love

  • 🚀 Smooth writing experience
  • 💡 Versatile note-taking features
  • 🔒 Good privacy
  • 👍 Useful for various purposes (notes, PDF annotations, etc.)

Room to improve

  • 🐛 Crashes and freezes
  • 🔒 Limiting free version with paywalls
  • 🐛 Bugs with erasing, page management, and file corruption
  • 🐛 Laggy performance and slow loading times

Obsidian

From 2.8K App Store ratings

What we love

  • 🚀 Powerful features
  • 👍 Customizable and flexible
  • 🔒 Secure and private
  • 💡 Innovative note-taking approach
  • 🚀 Smooth mobile experience

Room to improve

  • 🐛 Sync issues and unreliable iCloud integration
  • 🔋 Slow startup and performance issues on mobile
  • 👎 Steep learning curve for new users
  • 👎 Limited sorting and organization options
  • 👎 Lack of WYSIWYG editing on mobile

Bugs and requests

Notes Writer

Reported bugs

4 issues
  • Notes randomly disappearing or getting corrupted
  • Inability to recover deleted documents
  • Unexpected behavior when adding/deleting pages
  • Syncing issues and broken links between documents

Requested features

4 requests
  • Add more brushes and pen customization options
  • Improve the clipping/selection tool
  • Implement OCR and handwriting search
  • Provide a Mac version

Obsidian

Reported bugs

3 issues
  • Sync issues leading to data loss
  • Freezing and crashing on mobile devices
  • Editing bugs and text input issues

Requested features

5 requests
  • Improved sorting and organization options
  • WYSIWYG editing on mobile
  • Better integration with other cloud storage services
  • More intuitive onboarding process for new users
  • Native mobile widgets and share sheet integration

In-app purchases

8 purchases

Notes Writer

Subscriptions3
  • Weekly$1.997 Days
  • Notes Writer Unlock All and AI3 Days trial$3.991 Month
  • Notes Writer Unlock All and AI3 Days trial$14.991 Year
One-time5
  • Full Version Unlock Pro$3.99
  • Full Version Unlock Pro$4.99
  • Full Version Unlock Pro2 variants$5.99
Show 2 more
  • Full Version Unlock Pro$6.99
  • Lifetime Pro Full Unlock$14.99
None

Obsidian

No in-app purchases

Questions

Is Notes Writer free?
Notes Writer is free to download, with in-app purchases available.
Is Obsidian free?
Obsidian is free to download, with no in-app purchases.
Which has better reviews, Notes Writer or Obsidian?
Notes Writer is rated higher. Notes Writer averages 4.5 out of 5 from 7.3K ratings, while Obsidian averages 4.5 from 2.8K ratings.
Do Notes Writer or Obsidian have ads?
Neither Notes Writer nor Obsidian shows ads.
Which is updated more often, Notes Writer or Obsidian?
Notes Writer ships an update every 4 days, and Obsidian every 3 weeks. Most recently, Notes Writer was updated on November 1, 2026 and Obsidian on November 1, 2026.

Other comparisons