Comparison

Carbo › Pencil Notes & Drawing vs keyVisitor

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

Head to head
About

Carbo › Pencil Notes & Drawing

Capture and organize handwritten notes and sketches digitally. This app preserves the expressiveness of your original drawings with innovative visualization technology. Tag, annotate, and store your creations in the cloud for easy retrieval and sharing.

Highlights
  • Hybrid visualization technology
  • Image-based input options
  • Natural sketching with Apple Pencil support
  • Editable notes and drawings
  • Tagging and annotation for search
  • Cloud storage integration
  • Customizable export styles
Features
Read full description

Carbo lets you capture and organize handwritten notes and sketches, bringing handwriting in the digital age, right on your iPhone, iPad, and Mac. Carbo's innovative visualization technology sets you free from pixel artefacts, while preserving all expressiveness of your original drawings. Collect notes, design sketches, or whiteboard drawings. Tag and annotate your notes for easy retrieval. Store them either on the device itself or in the cloud, with native support for iCloud, Evernote, and Dropbox. Finally, turn your notes and drawings into beautiful creations using a variety of handcrafted export styles and share them with the world. KEY FEATURES • Hybrid visualization technology: note picture is cleaned up and turned into a highly accurate monochrome representation. Carbo’s innovative rendering technology offers both the advantages of vector (sharpness) and bitmap (easy editing) techniques. • Image-based input options: take a new picture, import from camera roll, or import an image from iCloud Drive. • Drawing support: highly accurate and natural sketching capabilities. Full support for Apple Pencil & 3D Touch pressure sensitivity. • Note editing: edit any part of your note, i.e. select, resize, relocate, or remove any element. Make strokes thinner or thicker. • Annotations: add descriptive text to your note. These annotations are archived along with the image, and are globally searchable. • Tag your notes. Tags are colored for easier detection, and will help you classify notes. • Notes can be stored either on your device, or in the cloud using Evernote, Dropbox, and iCloud. • Efficient file-based storage: typical note is 400KB instead of the usual 3MB JPEG of a photo. • Export styles (iOS): choose among 7 beautifully handcrafted styles and their variants to customize your notes (Blackboard/chalks combos, Blueprint, Paper with several pen styles…). • Up to 1200-dpi black-and-white high-fidelity exports for print. • Many sharing options: Twitter, Facebook, AirDrop, Mail, Messages, iCloud Drive, Open in (another app)... • Latest iOS Support: App Search, iPad multitasking, Siri 'Remind Me', 3D Touch shortcuts, modern iOS 14 photo access (browsing & searching). • macOS 11 Big Sur / Mac Catalyst (Optimized for Mac). • Universal app for iPhone, iPad, and Mac. • Pro Pack 2 or Pro Plan: one-off purchase to remove the 10-note limit. PRICING You can unlock all features either through Pro Pack 2, a one-time purchase, or through Pro Plan, an affordable subscription. Pro Pack upgrade pricing is also available if you own a previous version. HELP & FEEDBACK Visit creaceed.com/carbo for more information. Send your questions and feedback to carbo@creaceed.com Terms of Use: https://creaceed.com/terms Privacy Policy: https://creaceed.com/privacy

About

keyVisitor

Features
Read full description

Register, control, and optimize every visit in seconds.
 keyVisitor is an app for companies, enterprises, and SMEs seeking automated and secure visitor management. From pre-registration to post-visit analysis, you can: *Automate visitor check-in and check-out in just 3 seconds. *Protect data privacy with on-screen masking. *View real-time entry, exit, and dwell time. *Detect delays, incidents, or extended stays outside of scheduled hours. Before, during, and after every visit… fully under control: BEFORE *Pre-register from any device. *Unique QR code for single or multiple entries. *Customize parameters such as: purpose, branch, vehicle, equipment, internal contact. *Add your visit to Google Wallet and Apple Wallet! DURING *Instant scan at reception: no waiting lines. *Data visualization of visits securely on screens with key Digital Signage. *Automatic alerts if a visitor exceeds their allowed time. *Integration with License Plate Recognition (LPR) using CCTV and access control. AFTER *Generate reports on punctuality, incidents, and stay duration. *Optimize future visits with intelligent autocomplete. *Store relevant visitor, vehicle, or equipment data. Request a free demo and transform your reception into a smart experience.
 Discover how Key Visitor enhances the efficiency and security of your visitors and suppliers. Go to https://www.keybps.net/en/portfolio-items/key-visitor to check compatibility with ₁Access control ₂LPR. Use of this application is subject to the Apple Licensed Applications End User License Agreement, available at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ You may find our privacy policy at:: https://www.keybps.com/privacy-policy

Screenshots

Carbo › Pencil Notes & Drawing4 screens
keyVisitor3 screens

Verdict

The call

The clearest difference is in-app purchases: keyVisitor at none against Carbo › Pencil Notes & Drawing's 3. keyVisitor also leads on update cadence (every 5 weeks vs every 4 months). Carbo › Pencil Notes & Drawing's advantage is iOS requirement (18.0 vs 26.0). On price, ads 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. Carbo › Pencil Notes & Drawing sells 3 in-app purchases, starting at $3.99 per month. keyVisitor asks for nothing beyond the download.

UpkeepUpdate frequency

Carbo › Pencil Notes & Drawing ships an update every 4 months, keyVisitor every 5 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Carbo › Pencil Notes & Drawing versus keyVisitor: the parameters behind the verdict, then further details
ParameterCarbo › Pencil Notes & DrawingkeyVisitor
PriceFreeFree
Rating4.3 (51 ratings) — better—
Positive reviews54.8% of reviews—
Number of ratings51 — better—
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.0 — better26.0
Further details — not scored
Size36 MB2 MB
Age rating4+4+
DeveloperCreaceed SRLkey Business Process Solutions, SA de CV

Bugs and requests

Carbo › Pencil Notes & Drawing

Reported bugs

13 issues
  • Keeps crashing on iPad
  • Update bricks app (crashes on launch)
  • Carbo keeps crashing
  • Sync problem with Evernote
  • Exporting pages (archiving) doesn't work
Show 8 more
  • Buggy on iOS 9.01 and iPhone 6S
  • iPhone keeps switching off sync with Evernote
  • App crashes frequently
  • File import from iCloud shows files but can't be opened
  • Beta Evernote sync does not work
  • Randomly selects other bits on the page
  • Clunky or doesn't quite work
  • Sync with Evernote was easy, but iPhone keeps switching off attempt to sync

Requested features

58 requests
  • Adding colors
  • More pencil sizes
  • Ability to handle multi-page docs
  • Viable export options (PDF, etc.)
  • Ability to bundle pages into PDF
Show 53 more
  • Put a title on scans
  • Copy and paste selected objects
  • Export an entire notebook as PDF
  • Desktop client for reassociating tags/annotations
  • Save notes as pictures to Photos
  • Select multiple vectors and change color/thickness
  • iCloud Drive support
  • Invert image
  • Copy/cut/paste selections
  • Export svg file
  • OneDrive cloud option
  • Scan a whole page of doodles and separate them
  • Improve paper edge detection
  • Multi-page option
  • Text box or drawing function
  • Improve captured image quality
  • Edge-detection feature
  • Better handling of lined paper
  • Sync with Evernote
  • Choice of line sizes for annotations
  • Color picker and highlighter pen
  • Support for different writing utensils on one surface
  • Multiple page support
  • Different sized pens
  • More customization for page size
  • PDF vector export
  • Filter multiple tags
  • Re-editing scanned documents
  • Cloud sync for notes
  • Copy feature for local and cloud storage
  • Save to Photos app
  • Ability to use notes as pictures
  • Select multiple vectors and change color or thickness
  • Scan entire page of doodles and separate them
  • More cloud options (OneDrive)
  • Text box or drawing function
  • Better paper edge detection
  • Multi-page option
  • Improve captured image quality
  • Edge-detection
  • Better handling of lined paper
  • Sync with Evernote
  • Choice of line sizes for annotations
  • Color picker and highlighter pen
  • Support for different writing utensils on one surface
  • Multiple page support
  • Different sized pens
  • More customization for page size
  • PDF vector export
  • Filter multiple tags
  • Re-editing scanned documents
  • Cloud sync for notes
  • Copy feature for local and cloud storage

keyVisitor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Carbo › Pencil Notes & Drawing

Subscriptions2
  • Pro Plan (Monthly)7 Days trial$3.991 Month
  • Pro Plan (Yearly)7 Days trial$9.991 Year
One-time1
  • Pro Pack 2$23.99
None

keyVisitor

No in-app purchases

Questions

Is Carbo › Pencil Notes & Drawing free?
Carbo › Pencil Notes & Drawing is free to download, with in-app purchases available.
Is keyVisitor free?
keyVisitor is free to download, with no in-app purchases.
Do Carbo › Pencil Notes & Drawing or keyVisitor have ads?
Neither Carbo › Pencil Notes & Drawing nor keyVisitor shows ads.
Which is updated more often, Carbo › Pencil Notes & Drawing or keyVisitor?
Carbo › Pencil Notes & Drawing ships an update every 4 months, and keyVisitor every 5 weeks. Most recently, Carbo › Pencil Notes & Drawing was updated on November 1, 2026 and keyVisitor on November 3, 2026.

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