Comparison

SyncSpace vs Write on PDF

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

Head to head
About

SyncSpace

This app offers a collaborative digital whiteboard with infinite zoom capabilities. Users can sketch ideas, share them in real-time with others over the internet, and export them in various formats. It's designed for seamless group brainstorming and visual idea exploration.

Highlights
  • Infinite zoom drawing space
  • Real-time collaboration
  • Shareable via link
  • Local network discovery (Bonjour)
  • Export as PDF
  • Embeddable on web pages
  • Palm/wrist protection
Features
Read full description

SyncSpace lets people express and explore visual ideas together, wherever you are. It is a zoomable drawing space that can be shared in real time over the net. It is a shared whiteboard plus a whole lot more. ∞ DEEP ZOOMING Sketch out your ideas in a nearly limitless, zoomable drawing space. Never again be limited by the size of the canvas or the amount of space remaining in an existing sketch. You can always zoom in to add detail or zoom out to add context to a drawing. With SyncSpace's zooming, handwriting on a 10" screen actually becomes feasible. ∞ SKETCH TOGETHER SyncSpace drawings can be updated by anyone who also has SyncSpace, anywhere on the Internet. You can invite others to collaborate on sketches by sending a link via iMessage or email. In meetings, conferences and schools, SyncSpace can discover and broadcast the existence of nearby shared drawings using Bonjour. There are no limits to the number of people who can collaborate on a drawing. ∞ SHARING IS NICE Your drawings can be shared via Facebook, Twitter, 37 Signals' Campfire, your photo library, or emailed as PDF files. You can also send SyncSpace drawings to any app that handles PDF files, including Dropbox, GoodReader, Evernote, iBooks and thousands more! Sketches can be displayed on a nearby AppleTV or any HDMI or VGA-connected display. Any shared drawings are also advertised on the local network using Bonjour. ∞ SHARE ANYWHERE Collaborate on drawings using SyncSpace or view them with zooming and real-time updates using a web browser on a PC, Mac or mobile device. In addition, SyncSpace makes note taking and sketching easy with a plethora of fantastic features: - Palm/wrist protection for writing notes - Advanced line smoothing - Shared drawings can be embedded on any web page, with real-time updates and zooming - Rotate drawings however you like - Zoom-extents button quickly takes you to the outer limits of the drawing (and back to your original position with a second tap) - Export to email or other apps as a high resolution PDF file. The SyncSpace Collaboration service requires a paid subscription. If you choose to subscribe, payment will be charged to your iTunes account, and your account will be charged for renewal 24 hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the iTunes Store after purchase. The current price for collaboration subscription is $2.99 USD per month or $24.99 per year, and may vary from country to country. Terms of Use: https://infinitekind.com/syncspace-terms Privacy Policy: https://infinitekind.com/syncspace-privacy-policy

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/

Screenshots

SyncSpace4 screens
Write on PDF4 screens

Verdict

The call

The clearest difference is rating: Write on PDF at 4.9 against SyncSpace's 3.6. Write on PDF also leads on monetization model (freemium vs subscription) and update cadence (every 10 days vs monthly). SyncSpace's advantage is iOS requirement (12.0 vs 16.4). On price, ratings volume, ads and in-app purchases 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. SyncSpace sells 2 in-app purchases, starting at $2.99 per month and Write on PDF sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Write on PDF holds the better App Store score, 4.9 against 3.6. Both are backed by a comparable volume of ratings — 7 and 19 respectively.

UpkeepUpdate frequency

SyncSpace ships an update monthly, Write on PDF every 10 days. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
SyncSpace versus Write on PDF: the parameters behind the verdict, then further details
ParameterSyncSpaceWrite on PDF
PriceFreeFree
Rating3.6 (7 ratings)4.9 (19 ratings) — better
Positive reviews53.6% of reviews—
Number of ratings719 — better
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.4
Further details — not scored
Size22 MB260 MB
Age rating4+4+
DeveloperThe Infinite Kind LimitedKairoos Solutions SL

Customer experience

SyncSpace

All ratings7 ratings
Positive57.1%
Neutral14.3%
Negative28.6%
Written reviews69 reviews
Positive53.6%
Neutral11.6%
Negative34.8%

Write on PDF

All ratings19 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

SyncSpace

Reported bugs

21 issues
  • Laggy performance
  • App crashes
  • Palm rejection not working
  • Apple Pencil not compatible
  • Eraser not working
Show 16 more
  • Syncing issues
  • Shared editing not working
  • External display not working
  • Internet sharing unreliable
  • Zoom changes line thickness
  • Awkward zoom and picture dragging
  • Handwriting issues (dotting 'i', periods)
  • Cannot find written content after zooming out
  • Email sync link not working
  • Live drawing not working
  • Syncing to Campfire does not work
  • No landscape mode
  • Text jumps around when editing
  • Half icons do not rotate properly
  • Navigation button missing
  • Rooms corrupt and require reinstallation

Requested features

20 requests
  • Custom color option
  • More brush options
  • Blender tool
  • Shapes (circles, squares)
  • Stickers or skins for cuter collaborations
Show 15 more
  • Gesture-based features for panning
  • In-app audio chat
  • Landscape mode support
  • Ability to add photos (camera roll, Dropbox, take photo)
  • Win32 version for collaboration
  • Universal version for iPhone and iPad
  • Dropbox support for saving/opening
  • Windows/Mac app for showing shared whiteboard
  • Upload to Google Docs
  • Import own backgrounds
  • Follow feature for seeing others' drawings
  • Easier connection for collaboration
  • Undo feature
  • More intuitive eraser tool options
  • Document titles

Write on PDF

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

SyncSpace

Subscriptions2
  • Monthly Collaboration Service14 Days trial$2.991 Month
  • Annual Collaboration Service14 Days trial$24.991 Year
2 purchases

Write on PDF

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

Questions

Is SyncSpace free?
SyncSpace is free to download, with in-app purchases available.
Is Write on PDF free?
Write on PDF is free to download, with in-app purchases available.
Which has better reviews, SyncSpace or Write on PDF?
Write on PDF is rated higher. SyncSpace averages 3.6 out of 5 from 7 ratings, while Write on PDF averages 4.9 from 19 ratings.
Do SyncSpace or Write on PDF have ads?
Neither SyncSpace nor Write on PDF shows ads.
Which is updated more often, SyncSpace or Write on PDF?
SyncSpace ships an update monthly, and Write on PDF every 10 days. Most recently, SyncSpace was updated on September 30, 2026 and Write on PDF on October 9, 2026.

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