Comparison

Blue Sketch vs SecondFloor

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

Head to head
About

Blue Sketch

This app allows you to quickly sketch and write ideas freely on a blue canvas. It offers essential drawing tools, page management, and sharing options. Focus on your creativity with a minimalist interface and robust organizational features.

Highlights
  • Handwritten note-taking
  • Drawing tools (pen, line, shapes)
  • Undo/Redo functionality
  • Page size and scaling options
  • Image sharing (PNG, JPG, PDF)
  • Document organization (folders, sorting)
  • Read-only mode
  • Apple Pencil support
Read full description

Sketch your idea! You can write freely and quickly because it is handwritten. You can concentrate on writing because it is the minimum function that can write only white lines on the blue canvas. Functions List: - Can be used as a notebook or notepad - Pen tool: draw a line - Straight line tool - Rectangle and Ellipse Tools - Switch between solid/dotted lines - Can change the size of the pen - Undo / Redo - Can change the page size - Can scale the page - Image sharing: Share an image as PNG, JPG, or PDF format. Also, you can share monochrome converted images. - List documents - List recently opened documents - Organize: Document folders - Sort documents and folders - Title documents and folders - Delete the document then put it into the trash box. - Restore the deleted document from the trash box. - Delete the document entirely in the trash box. - Copy documents: You can duplicate the document. Tap the copy button at the bottom right of the note screen to duplicate it. - Read-only mode: While in read-only mode, you can disable writing and prevent erroneous operations. You can change the settings by tapping the title on the note screen. - Option to use only Apple Pencil: Only available for iPad compatible with Apple Pencil. - Double-tap the Apple Pencil to switch between tools in sequence. - Apple Pencil Pro is also supported. - Can turn off/on the function the app puts the device into a sleep state if you don't touch the screen for a certain period while the page is displayed. About In-App Purchase: The first 20 pages can be used free of charge. After that, adding pages will be paid content. Please support the developer.

About

SecondFloor

Instantly create detailed floor plans by scanning interiors with LiDAR. AI automatically detects walls, windows, and doors, with real-time feedback and easy on-device editing. Share finished plans directly from the app.

Highlights
  • Instant floor plans with LiDAR
  • AI detection of walls, windows, doors
  • Real-time scanning feedback
  • On-device editing
  • Built-in sharing
  • GLA Square Footage/Meters
  • Custom room labels
Read full description

SecondFloor is the fastest way to create a finished floor plan. Scan the interior of a home using LiDAR and instantly receive a floor plan. SecondFloor uses AI to automatically detect walls, windows, doors, and more while providing you with real time feedback to your scanning progress. Quickly edit each floor plan from within the app. Built in sharing allows you to share finished floor plans while still on-site. SecondFloor requires a paid subscription and a LiDAR equipped device. Features: • Instant floor plans • GLA Square Footage/Square Meters • Individual room measurements • AI detects and places fixed furniture • Guided scanning instructions • Custom Room labels • LiDAR accurate dimensions • Easily edit on device • Secure on device processing • Built in sharing • Unlimited floor plan scanning • Simple upfront pricing • No internet required for use • Integrated instructions for use • Integrated support features Localized Features: • Metric & Imperial room measurements & area calculations (System Measurement Preference) • Single digit decimal room measurement precision for Australia & New Zealand (System Region) • Regional room label presets (System Language) • Minimum stair tread sized to regional building codes (System Region) Supported Languages: • English - US • English - UK • English - Canada • English - Australia • English - New Zealand • Dutch • French - Canada • French - France • Finnish • German • Hindi • Italian • Portuguese - Brazil • Spanish - Spain • Spanish - Latin American Terms & Conditions: Your use of this application is governed by the SecondFloor Terms and Conditions (http://secondfloorapp.com/terms-and-conditions/) and the SecondFloor Privacy Policy (http://secondfloorapp.com/privacy-policy/)

Screenshots

Blue Sketch4 screens
SecondFloor4 screens

Verdict

The call

The clearest difference is monetization model: Blue Sketch at free with in-app purchases against SecondFloor's subscription. Blue Sketch also leads on rating (4.7 vs 4.2) and review sentiment (77% vs 60%). SecondFloor's advantage is update cadence (fortnightly vs monthly). 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. Blue Sketch sells 2 one-off in-app purchases and SecondFloor sells 4 in-app purchases, starting at $24.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Blue Sketch holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Blue Sketch has 338 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 77% of Blue Sketch's written reviews are positive against 60% of SecondFloor's.

UpkeepUpdate frequency

Blue Sketch ships an update monthly, SecondFloor fortnightly. The most recent releases landed on October 21, 2026 and October 22, 2026 respectively.

Scorecard6 real differences · 4 level
Blue Sketch versus SecondFloor: the parameters behind the verdict, then further details
ParameterBlue SketchSecondFloor
PriceFreeFree
Rating4.7 (338 ratings) — better4.2 (17 ratings)
Positive reviews76.9% of reviews — better60.0% of reviews
Number of ratings338 — better17
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.0
Further details — not scored
Size23 MB120 MB
Age rating4+4+
DeveloperHituzi ANDORight Home Media Inc.

Customer experience

Blue Sketch

All ratings327 ratings
Positive93.3%
Neutral2.8%
Negative4.0%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

SecondFloor

All ratings16 ratings
Positive81.3%
Neutral0.0%
Negative18.8%
Written reviews10 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

Bugs and requests

Blue Sketch

Reported bugs

1 issue
  • App crashed when attempting export on 2019 iPad Pro

Requested features

6 requests
  • More shapes for sketches (curves, polygons)
  • TEXT field option for readable font
  • Pinch/stretch to zoom
  • Finer and less pixelated pencil strokes
  • Option to add extra pages
Show 1 more
  • Feature to group elements for easy deletion

SecondFloor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Blue Sketch

One-time2
  • 10 pages$0.99
  • 30 pages$1.99
4 purchases

SecondFloor

Subscriptions3
  • Weekly Subscription7 Days trial$24.997 Days
  • Monthly Subscription7 Days trial$49.991 Month
  • Yearly Subscription7 Days trial$249.991 Year
One-time1
  • Day Pass$9.99

Questions

Is Blue Sketch free?
Blue Sketch is free to download, with in-app purchases available.
Is SecondFloor free?
SecondFloor is free to download, with in-app purchases available.
Which has better reviews, Blue Sketch or SecondFloor?
Blue Sketch is rated higher. Blue Sketch averages 4.7 out of 5 from 338 ratings, while SecondFloor averages 4.2 from 17 ratings.
Do Blue Sketch or SecondFloor have ads?
Neither Blue Sketch nor SecondFloor shows ads.
Which is updated more often, Blue Sketch or SecondFloor?
Blue Sketch ships an update monthly, and SecondFloor fortnightly. Most recently, Blue Sketch was updated on October 21, 2026 and SecondFloor on October 22, 2026.

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