Comparison

Write on PDF vs WhiteSync

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

Head to head
About

Write on PDF

This app offers a digital whiteboard experience with advanced drawing tools and PDF integration. It allows for freeform sketching, note-taking, and organization with unlimited notebooks and templates. Collaborate or work independently with enhanced security and automatic backups.

Highlights
  • Advanced drawing tools with 7 ink types
  • Add text boxes, photos, and paper styles
  • Over 200 templates
  • Unlimited notebooks and folders
  • PDF import and export
  • Apple Pencil and stylus support
  • Folder and app-wide passcodes
Features
Read full description

Whiteboard PDF is an intuitive and focused whiteboard app for iPhone and iPad users. It's ideal for everyone who loves to sketch ideas, teach, or work with whiteboards. It brings your creativity to life. Key Features: + Simple and Intuitive: Enjoy the natural feel of a traditional whiteboard, enhanced with digital functionality. + Advanced Drawing Tools: Utilize 7 distinctive ink tools - Marker, Pen, Pencil, Monoline, FountainPen, Watercolor, and Crayon, specially designed for iOS 17. + Add text boxes, photos and different paper styles. + Choose from 200 Templates: Access over 200 templates to jumpstart your creativity and productivity. + Unlimited Organization: Keep your work structured with limitless notebooks, folders, and subfolders. + Customizable Notebook Covers: Personalize each project with unique notebook cover designs. + Collaborate or Work Independently: Whether you're sharing your whiteboard with a team or working solo, the app caters to all needs. + Seamless PDF Integration: Effortlessly import and export all your whiteboads in PDF format. + Enhanced Security: Keep your projects safe with app-wide passcodes and individual passcodes for specific folders. + Reliable Automatic Backups: Trust in the automatic backup feature to protect your notes and notebooks. + Apple Pencil & Other Stylus Support: Experience precise control with the Apple Pencil, featuring pressure sensitivity and tilt recognition, alongside compatibility with other styluses. Whiteboard PDF transforms your device into an incredible whiteboard experience, perfect for all your creative, educational, or professional needs! Privacy Policy http://www.noteswriter.com/Kairoos_Privacy_Policy.html EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

WhiteSync

Features
Read full description

Unleash Your Creativity with WhiteSync! WhiteSync is a free, simple whiteboard app for sketching, drawing, and collaborating in real-time. Whether you’re brainstorming on a drawing pad, teaching on a digital whiteboard, or working together on creative projects, WhiteSync syncs your artboards effortlessly over WiFi or cloud. Key Features: Collaborative Drawing – Sync whiteboards instantly over WiFi for local draw-together sessions. Cloud Whiteboard Sync – Save and access your sketches on any device, anytime. Real-Time Teamwork – Draw with friends or colleagues on a shared sketchbook. Offline Drawing Desk – Work on artboards without internet and sync later. Multilingual Support – Create in your language with an easy drawing interface. Simple & Intuitive – A digital drawing pad designed for quick ideas and line drawings. Perfect For: Artists & Designers – Use it as a sketchbook for vector drawing or creative brainstorming. Teachers & Students – Teach with an interactive whiteboard like Educreations or ShowMe. Professionals – Collaborate on board projects or workshops with ease. Families – Enjoy collaborative family drawing and fun draw-and-guess games. Why WhiteSync? Go beyond the whiteboard with a drawing app that’s more than just drawing—it’s about connecting! Start with our free version (save up to 3 artboards, one WiFi/cloud sync) or upgrade to Pro for unlimited saves, image exports, and full collaboration. Download WhiteSync Now – Your drawing desk for collaborative sketches awaits! Unlock premium features with our subscriptions: Weekly Subscription: $1.99 Monthly Subscription: $4.99 Yearly Subscription: $49.99 For details on our subscription terms, please see our Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.

Screenshots

Write on PDF4 screens
WhiteSync4 screens

Verdict

The call

The clearest difference is update cadence: Write on PDF at every 10 days against WhiteSync's every 2 months. WhiteSync's advantage is iOS requirement (12.0 vs 16.4). On price, ads, in-app purchases 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. Write on PDF sells 2 in-app purchases, starting at $1.99 per month and WhiteSync sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Write on PDF ships an update every 10 days, WhiteSync every 2 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 7 level
Write on PDF versus WhiteSync: the parameters behind the verdict, then further details
ParameterWrite on PDFWhiteSync
PriceFreeFree
Rating4.9 (19 ratings) — better—
Number of ratings19 — better—
Update frequencyEvery 10 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.412.0 — better
Further details — not scored
Size260 MB80 MB
Age rating4+4+
DeveloperKairoos Solutions SLEch-Chafai Kadri

In-app purchases

2 purchases

Write on PDF

Subscriptions1
  • Unlock All Features and AI3 Days trial$1.991 Month
One-time1
  • Full Pro Unlock$5.99
3 purchases

WhiteSync

Subscriptions3
  • Weekly Pro3 Days trial$1.997 Days
  • Monthly Pro7 Days trial$4.991 Month
  • Yearly Pro$49.991 Year

Questions

Is Write on PDF free?
Write on PDF is free to download, with in-app purchases available.
Is WhiteSync free?
WhiteSync is free to download, with in-app purchases available.
Do Write on PDF or WhiteSync have ads?
Neither Write on PDF nor WhiteSync shows ads.
Which is updated more often, Write on PDF or WhiteSync?
Write on PDF ships an update every 10 days, and WhiteSync every 2 months. Most recently, Write on PDF was updated on October 24, 2026 and WhiteSync on October 3, 2026.

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