Comparison

Notes Writer vs Colors Extractor

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

Colors Extractor

Extract color palettes from images with their hexadecimal and RGB codes. Save favorite palettes and export them as images. Supports importing from gallery, URL, or camera.

Highlights
  • Extract colors from images
  • View colors in HEX, RGB, HSV, HSB, CMYK
  • Copy color codes to clipboard
  • Import images from gallery, URL, or camera
  • Save favorite color palettes
  • Export palettes as images
Features
Read full description

The app Colors Extractor helps you to extract colors from any image. The colors are shown with yours hexadecimal code and can be copy to clipboard. Furthemore, the colors code also are exposed in the colors sistems like RGB, HSV, HSB and CMYK. To extract colors using the app is very simple. Just import the images from the device gallery, from a URL(Internet link) or through the camera. In this way, the application will display the main colors that make up the image. In addition, it is possible to add the color palette to the favorites list and export an image with the found color collection. The main features of the app are as follows: ==Color Extraction== With this app you can extract colors from an image. ==Color Picker== Select and copy colors as per your need. ==Copy/Share Colors== Copy or share image colors in multiple color systems. ==Favorite Palettes== Save the color palettes extracted from the image. ==Export Palette== Export the color palettes as an image containing their respective codes in HEX. Use this app as an help tool for your creativity. Have fun!

Screenshots

Notes Writer4 screens
Colors Extractor4 screens

Verdict

The call

The clearest difference is rating: Colors Extractor at 5.0 against Notes Writer's 4.5. Colors Extractor also leads on iOS requirement (15.6 vs 26.0). Notes Writer's advantage is ads (none vs shown) and update cadence (every 4 days vs every 7 months). 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. Notes Writer sells 8 in-app purchases, starting at $1.99 per 7 days and Colors Extractor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Colors Extractor holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Notes Writer has 7.3K ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Notes Writer ships an update every 4 days, Colors Extractor every 7 months. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Notes Writer versus Colors Extractor: the parameters behind the verdict, then further details
ParameterNotes WriterColors Extractor
PriceFreeFree
Rating4.5 (7.3K ratings)5.0 (5 ratings) — better
Positive reviews45.0% of reviews—
Number of ratings7.3K — better5
Update frequencyEvery 4 days — betterEvery 7 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.6 — better
Further details — not scored
Size660 MB46 MB
Age rating4+4+
DeveloperKairoos Solutions SLLuiz Santos

Customer experience

Notes Writer

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

Colors Extractor

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

Colors Extractor

Not enough reviews yet to summarise bugs or requests.

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
1 purchases

Colors Extractor

One-time1
  • Remove Ads$3.99

Questions

Is Notes Writer free?
Notes Writer is free to download, with in-app purchases available.
Is Colors Extractor free?
Colors Extractor is free to download, with in-app purchases available.
Which has better reviews, Notes Writer or Colors Extractor?
Colors Extractor is rated higher. Notes Writer averages 4.5 out of 5 from 7.3K ratings, while Colors Extractor averages 5.0 from 5 ratings.
Do Notes Writer or Colors Extractor have ads?
Colors Extractor shows ads; Notes Writer does not.
Which is updated more often, Notes Writer or Colors Extractor?
Notes Writer ships an update every 4 days, and Colors Extractor every 7 months. Most recently, Notes Writer was updated on November 3, 2026 and Colors Extractor on October 24, 2026.

Other comparisons