Carbo 2.2.5 - April 5th 2024

Modernization for latest OS & bug fixes

Carbo now requires iOS 15 or higher.

Carbo 2.2.4 - September 15th 2022


  • This release brings compatibility and optimizations for iOS 16.
  • Carbo requires iOS 14 or later.


  • Stability and performance improvements.

Carbo 2.2.3 - April 4th 2022

  • Maintenance release with minor enhancements & bug fixes.

Carbo 2.2.2 - November 15th 2021



  • Full compatibility and enhancements with iOS 15 including transparent navigation bars and inset grouped table views.
  • Fixed errouneous page overlay in the camera view that could be misaligned on some iPad devices.
  • Minor fixes and enhancements.



  • Full compatibility with macOS Monterey.
  • Minor fixes and enhancements.

Carbo 2.2.1 - February 19th 2021

  • Fixed a bug where owners of the previous version could not be entitled to access to Premium Pack.
  • Fixed a bug where the rendering was corrupted when using a transparent background style on Mac.

Carbo 2.2 - February 17th 2021

  • Carbo is now available both as a one-off purchase (Pro Pack, same as before), or through a subscription (Pro Plan, new). This hybrid business model lets you economically try all features, and lets you choose the purchase model that best suits your needs. One-off purchase covers the current major version of the app (+ upgrade pricing) while the subscription includes all major upgrades of the app while subscribed.

Carbo 2.1 - December 2nd 2020

Optimized for Apple Silicon. Carbo has been rebuilt to take advantage of Apple Silicon CPU & GPU capabilities, and to deliver optimal performance in image processing and more.

  • Fixed a bug that could cause unwanted straight lines when sketching.
  • Improved in-app purchase management.

Carbo 2.0.2 - November 18th 2020

  • Stability and performance improvements.

Carbo 2.0.1 (Mac) - November 16th 2020

  • Stability and performance improvements.

Carbo 2.0 - November 12th 2020

Carbo 2 brings all your iPad or iPhone-created notes right into your Mac through a new Mac Catalyst app (Optimized for Mac). Carbo enables handwriting & drawing either from camera or Apple Pencil with outstanding real-life-like pixel-free quality. This makes a lot of sense on iPad and iPhone as these are great input & viewing devices, but now these notes can also be accessed from the Mac through a refined Mac Catalyst app, providing the full productive experience on all your Apple devices.

macOS 11 Big Sur / Universal app
  • Carbo 2 comes as a universal app for iPhone, iPad, and Mac.
  • Optimized for Mac (Mac Catalyst app enhanced for macOS 11 look & feel) which provides a great user experience on the Mac.
  • Modern-style full-height sidebar, refreshed toolbar, use of modern SF Symbols design language.
  • Main menu adaptations, contextual menus.
  • Drag & drop of notes (tagging, import, export).
  • Spotlight search.
  • Metal-based note rendering (Metal is Mac only, pixel-free on all devices).
  • Carbo 2 now offers photo import from the new & more capable iOS 14 photo picker (filter, search, etc.).
  • This release also brings improved handling of user privacy with support for photo albums security constraints of iOS 14.
  • iOS app requirement: iOS 13 or more recent.
  • Carbo 2 now comes as a free app + in-app purchase. New users can fully try the app for free with a limit of 10 notes, and get the Premium Pack to remove that limit.
  • Free upgrade for version 1.0 users. Pre-existing users (paid app) keep all the features they already have without limitation.

Carbo 1.8.1 - June 11th 2020

  • Modernization for latest OS & bug fixes.
  • Fixed a bug where a Dropbox notebook could fail to sync when the app was reactivated from the iOS Home screen.

Carbo 1.8 - October 31st 2019

  • Carbo 1.8 is now optimized for iOS 13
    • Dark Mode is supported throughout the app and enables notes that remain easy on the eyes in a dark environment.
    • User interface has been fine-tuned with latest iOS 13 enhancements.

Carbo 1.7 - December 10th 2018

  • Updated for the new iPad Pro
    • Handling of new iPad Pro display sizes (11" and 12.9").
    • Handling of new Apple Pencil double-tap gesture: switch to eraser, or last-used tool.

Carbo 1.6.7 - October 18th 2018

  • Fixed a rare issue that could cause a crash at launch.

Carbo 1.6.6 - October 4th 2018

  • Updated for new iPhone sizes (including iPhone XS Max and more).
  • Minor fixes and enhancements for iOS 12.

Carbo 1.6.5 - June 21st 2018

  • Updated the crash reports framework.

Carbo 1.6.4 - May 24th 2018

This release of Carbo adds compliance with European Union’s General Data Protection Regulation (GDPR). In particular, for a notebook stored in a 3rd-party service (iCloud, Dropbox, and Evernote), this release ensures that you can:
  1. Get a copy of all the notes stored in the notebook:
    • Select the notebook in the sidebar.
    • Select any note with a long press.
    • Tap on the "Select All" button.
    • Tap on the archive button to create a local archive file containing the note images and their metadata in human readable form.

  2. Completely delete the data stored in the third-party service associated with the notebook.
    • Select the notebook in the sidebar.
    • Select any note with a long press.
    • Tap on the "Select All" button.
    • Tap on the delete button.

  3. Temporarily deactivate access to the third-party service associated with the notebook.
    • Go to Settings > Notebooks.
    • Switch off the notebook.

Carbo 1.6.3 - May 7th 2018

  • More robust palm rejection to avoid leaving marks when resting the palm while drawing with the Apple Pencil.

Carbo 1.6.2 - March 29th 2018

  • Inko Compatibility: added support for dragging notes to our new collaborative whiteboard app "Inko".
  • Fixed a bug that caused the editing tool offset setting (Settings > General Options) to be ignored.

Carbo 1.6.1 - January 24th 2018

  • Fixed a crash that could occur on iOS 11.2 when cropping a picture.
  • Improvements to touch gesture handling when drawing, moving, or zooming in the canvas.

Carbo 1.6 - November 3rd 2017

  • Updated to support iPhone X.

Carbo 1.5 - September 19th 2017

  • Optimized for iOS 11.
  • Support for iOS 11 Drag and Drop:
    • Tagging / moving notes: notes can be dropped on a specific tag in the sidebar which will tag them. Dragging notes to another store (iCloud, Dropbox, etc.) in the sidebar will move them to that store (internal dragging: iPhone and iPad).
    • Importing picture: dragging a picture from another app into Carbo will create a new note from it. Dragging it directly into a specific store (iCloud, Dropbox, etc.) in the sidebar will create the note in that store (iPad only).
    • Exporting a drawing: when a note is opened in the style chooser, it can be exported with that style into another app by dragging it (iPad only).
    • Exporting multiple notes: multiple notes can be dragged simultaneously from the main list, and exported to another app (iPad only).
  • Improved Apple Pencil support (sketch shape rendering).
  • Fixed a bug that could cause the picture to flicker when zooming in the picture of a note.

Carbo 1.4.4 - June 6th 2017

  • Fixed crash at launch that could occur in rare circumstances when signing out of iCloud.

Carbo 1.4.3 - May 11th 2017

  • Updated Dropbox integration for future proofing.

Carbo 1.4.2 - February 3rd 2017

  • Fixed a crash occurring while taking a picture when "Save Pictures to Album" option is set.
  • Fixed an issue with photos not always saved in Carbo's album when "Save Pictures to Album" is set.
  • Fixed a crash that could occur when drawing on devices with a version of iOS below 9.1.

Carbo 1.4.1 - January 30th 2017

  • Bug fixes
    • Fixed incorrect aspect ratio when exporting in PDF format.
    • Fixed animations effects glitches that were impacting devices running iOS 10.
  • Improvements
    • Filename of exported image has been made unique to avoid naming collisions for same-day notes.

Carbo 1.4 - September 13th 2016

  • Improved Apple Pencil Support:
    • High-speed sampling (240 Hz) for 4x more accurate sketches.
    • Predictive sampling for reduced perceived lag while drawing.
    • Accurate handling of deferred orientation & pressure information coming through pencil wireless connection.
  • iOS 10 Features:
    • Added support for iOS 10 Spotlight Search Continuation: continue in-app searching from Spotlight initiated search.
    • Haptic feedback for iPhone 7 for editing operations.
    • Swift 3 modernization.
    • Optimization & bug fixes.

Carbo 1.3.2 - August 23th 2016

  • Added a privacy usage description when asking the permission to access camera and photo library.
  • Fixed a bug that grew memory usage when using multiple notes and that could crash the app.
  • Improved compatibility and stability with upcoming iOS release.

Carbo 1.3.1 - August 18th 2016

  • Fixed a bug that could prevent some extensions from working when exporting notes.

Carbo 1.3 - May 12th 2016

    • Carbo now offers 3 distinctive drawing tools: 2 fixed thickness drawing tool (best for regular handwriting & sketches), in addition to a new calligraphic drawing tool (styled handwriting like a flow pen).
    • Calligraphic tool reacts to pencil angle, speed, and pressure.
    • Drawing method has been refined for all tools, and drawing artefacts removed.
    • Drawing heads are now thinner to better enjoy Apple Pencil precision, and now provide absolute sizing in all cases (thickness does not depend on zoom level).
    • Eraser tool is now more sensitive to pencil angle. It becomes larger when pencil is lowered, with interactive display of eraser head.

    • Better use of display surface. Margin have been removed to provide more room to content
    • Improved fullscreen mode. Top toolbar and drawing tools are now completely removed when entering fullscreen mode for a better viewing / editing experience.

Carbo 1.2.3 - March 30th 2016

  • Fixed a crash that could happen when syncing clock with a time server.
  • Minor bug fixes.

Carbo 1.2.2 - February 9th 2016

  • Fixed an issue that was preventing selection tool from working properly.

Carbo 1.2.1 - January 4th 2016

  • Fixed an issue that prevented the introduction video from being played.

Carbo 1.2 - November 12th 2015

    Major new release of Carbo including new drawing capabilities & iPad Pro / Apple Pencil / iPhone 6s 3D Touch support, which offers great interaction with Carbo hybrid, pixel-free rendering technology.

    • Sketching notes directly within Carbo is now possible, using either finger or pencil. This highly accurate drawing technology reacts to velocity, pressure & more.
    • Added an option for creating empty notes.
    • Added "Pen" tool for drawing.
    • Added an "Erase All" tool to clear entire canvas.

    • Support for iPad Pro Pencil input, including sensitivity to speed, pressure, input angle, as well as improved accuracy over touch.
    • Support for iPhone 6s / 6s Plus pressure sensitive 3D Touch display.
    • Other devices without pressure capability: support for variable thickness based on drawing velocity.

    • Fixed an issue that could prevent Carbo from synchronizing notes with iCloud.
    • Fixed layout issues that could happen when rotating the iPad.

Carbo 1.1 - September 17th 2015

  • Optimized for iOS 9:
    • iOS 9 Required
    • Support for iOS 9 App Search, you can search Carbo notes globally on your iPhone/iPad.
    • Support for iOS 9 Siri "Remind me about this" for Carbo notes.
    • Support for iOS 9 iPad Multitasking (Slide Over, Split View).
    • Support for iOS 9 3D Touch Quick Actions for iPhone 6s / 6s Plus.
    • Improved iCloud support based on iOS 9 (silent) push notifications instead of polling, for quicker & battery-friendly note syncing.

  • Enhancements:
    • Faster app startup.

Carbo 1.0.2 - August 17th 2015

  • Fixed issues experienced on the beta version of iOS

Carbo 1.0.1 - July 8th 2015

  • Improved Chinese & Spanish localizations
  • Carbo is now accessible to other apps (export image to Carbo) through Open In...
  • Deleting a note now requires user confirmation
  • Added support for transparent PNG input
  • In-call status bar layout fixes
  • Fixed a problem that could cause a crash with Dropbox notebooks
  • Fixed a number of rare crashes
  • Fixed iOS 9-related crashes

Carbo 1.0 - May 21st 2015

Carbo is an app for people who love writing using real pen and paper, and who want to carry their notes on their devices at the same time.
  • Capture: shoot a picture of your sketches or writings, Carbo will clean it up to black and white.
  • Display: advanced image processing that enables beautiful, pixel-free rendering of handwritten notes.
  • Edit: select, move/rotate/scale, change thickness, erase.
  • Cloud Sync: store your notes in iCloud, Dropbox, or Evernote (beta).
  • Organize: add tags and annotations to easily search your notes.
  • Share: pick an export style (chalk & blackboard, blueprint, letterpress, Pop Art…) and share.