Comparison

Linea Sketch vs Full Screen Viewer

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

Head to head
About

Linea Sketch

This app provides a powerful yet intuitive drawing and note-taking experience. Its minimalist interface keeps the focus on your creations, offering features like intelligent shape creation, precise layer management, and artistic brushes. Record your process with time-lapse and utilize various grids and templates for diverse projects.

Highlights
  • Minimalist UI
  • Intelligent shape creation (ZipShapes)
  • Elegant layer management
  • Artistic watercolor brush
  • Time-lapse recording
  • Grids and templates
  • Annotation tools
Features
Read full description

Draw and take notes with ease. Linea Sketch gives you the right balance of power and control to capture thoughts and ideas effortlessly. The focus stays where it belongs: on your creations, not on the tools. Why Linea Sketch? ⁕ Minimal UI - Every control is designed to stay out of your way until you need it. Linea's elegant interface puts the focus on your creations. ⁕ Easy Colors - Choose from a wide range of pre-defined colors, or create your own with a single tap. Autogenerated tints & shades save time and effort. ⁕ Elegant Layers - Simplified set of layers that can be easily rearranged, merged, locked, or adjusted. Use the file browser and photo library to import images for reference and tracing. ⁕ ZipShapes & ZipLines - Simply hold still for a moment after drawing a line, rough square, circle, or triangle and ZipShape automatically creates a perfect version for you. You can then adjust final size, placement, and corner radius. ⁕ Move / Transform - Lasso part of your sketch, then move, rotate, flip, or resize. Transform one or more layers quickly & easily. ⁕ Watercolor Brush - Create rustic & artistic effects by painting with organic pigment in three modes: Simple, Wet, and Cloud. ⁕ Annotations - Add labels, notes, and callouts to your sketches using iOS Scribble or a keyboard. Fonts, colors, placement, and more can be adjusted effortlessly. ⁕ Time-Lapse - Record your creative process as you sketch! Save a video of the result as either a compressed 30 second clip or a full length movie. ⁕ Grids & Templates - A wide range of traditional grids, 3D isometric lines, storyboards, and templates for iOS screen or icon design. ⁕ Universal App - Linea Sketch is a universal app for iPad and iPhone. Your sketches seamlessly sync via iCloud to all of your devices, wherever you go. …………………………………… What do you get? Tools: • Technical Pencil - Hard lead, thin lines • Art Pencil - Soft lead, thick lines • Felt Tip Pen - Thin solid lines that vary in opacity • Marker - Fat solid lines • Watercolor Brush - Paint with organic, artistic pigment • Fill - Roll out wide areas of color or tap to flood fill • Blend - Smudge or soften strokes • Eraser - Clean up with your finger or Pencil • Pencil Plus! - Create additional effects using Apple Pencil pressure and tilt Colors: • Always on-screen & easily available • Tints and shades are automatically generated in six variations • 11 predefined color sets for various types of drawing • Create custom colors for branding and consistency • Drag & drop color swatches with other apps Layers: • Five flexible layers that can be dragged, merged, or cleared • Import any image from Files, Photo Library, or clipboard • Lockable to prevent accidental changes • Adjust opacity or double tap to toggle visibility on/off Templates: • Traditional grids displayed with lines & dots • Hexagonal, circular, and isometric (3D) grids • Notepads, to-do lists, and sheet music • App user interface and icon design • Storyboards in 16:9, 1.85:1, and 2.35:1 ratios • Adjustable intensity and can be hidden quickly Backgrounds & Paper Textures: • White Bond, Butcher’s Paper, Black Construction, Blueprint & many more • Adjustable custom background colors • Paper grain can be toggled on or off Exporting: • Save as PNG, JPEG, PSD, and PDF • Save entire sketch or crop a portion • Export to Slack, Dropbox, AirDrop & more • Presentation Mode shows just the canvas via AirPlay - perfect for classrooms Projects: • Organize drawings in project folders • Share, rename, or move drawings within projects • Thumbnail previews of drawings save time • Export PDF of entire project General: • Two-finger tap for Undo, three-finger tap for Redo • Pinch to zoom and rotate canvas • Tap Compass to lock, flip, or reset your canvas • Supports portrait & landscape orientations • Supports split screen and drag & drop Terms and Conditions: https://linea-app.com/terms Privacy Policy https://linea-app.com/privacy

About

Full Screen Viewer

View PDF files and various image formats on your smartphone or tablet with a focus on essential functions for workplace efficiency. Offers smooth operation, one-handed use, and powerful magnification for detailed viewing of blueprints, documents, and photos.

Highlights
  • Full screen display
  • One-handed operation
  • View PDF and image files
  • Magnify up to 100x
  • Smooth zoom and page switching
  • Read files from various locations
  • File management and history
Read full description

Full Screen Viewer is an app for viewing PDF files and images on smartphones and tablets. For those who are actively working, the selection of tools to use is essential for improving work efficiency. This app was developed based on the views of such people, with consideration for ease of use in the actual workplace by focusing on the necessary functions rather than aiming for multiple functions. [Features] · Full screen display · Smooth operation · Can be operated with one hand · Display PDF files and multiple types of image files (JPEG, PNG, GIF, BMP, TIFF) · Files can be magnified up to 100x · You can zoom in to the maximum size or zoom out to the minimum size with a single drag without having to drag again and again. · You can easily switch the screen orientation between portrait and landscape by simply changing the orientation of the device to portrait or landscape. · For PDF files with multiple pages, you can move between the pages. [Use Cases] · Display blueprints (plans) Main target users: Engineers This app allows files to be magnified up to a very high magnification level, so it is ideal for viewing PDF blueprints (plans) with detailed drawings. Also, since it can be operated with one hand, you can perform other tasks at the same time with the other hand, such as writing with pen. · Display various documents Main target users: Sales staff, consultants It supports PDF files with multiple pages, so you can move between the pages. It is suitable for displaying catalogs, pamphlets, and various documents. You can move between pages and change magnification levels with smooth operations with the full screen display to view for yourself or to show customers while giving an explanation. · Super magnification of photos Main target users: Photographers Since photos can be magnified up to 100x, you can magnify photos with complex machines, crowds, and various objects to see the details. [List of Functions] · Display PDF files and images (JPEG, PNG, GIF, BMP, TIFF) · Selection of operation method You can choose from 3 types of operation methods. Operation 1 Tilt the device to move Drag the screen to zoom in/out Operation 2 Drag the screen to move Drag the screen to zoom in/out Operation 3 Drag the screen to move Pinch in/out to zoom in/out · Change the maximum magnification level · PDF page switching · Read files in various locations Photos in the photo library PDF files and images in the device (iPhone/iPad) PDF files and images in Dropbox Download and display files by entering a URL (The URL can be entered directly or with a QR code) · File management Confirm view history View history is saved without limit (deleted manually) Read and delete files viewed in the past · Share files with friends and collaborators · Switch the screen orientation (portrait/landscape display) · Lock/unlock the screen orientation *A subscription is required to be able to use all the functions.

Screenshots

Linea Sketch4 screens
Full Screen Viewer4 screens

Verdict

The call

The clearest difference is ads: Linea Sketch at none against Full Screen Viewer's shown. Linea Sketch also leads on ratings volume (802 vs 3). Full Screen Viewer's advantage is update cadence (fortnightly vs every 3 months) and iOS requirement (13.0 vs 18.0). On price, rating, in-app purchases and monetization model 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. Linea Sketch sells 3 in-app purchases, starting at $1.99 per month and Full Screen Viewer sells 4 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

On the App Store both sit at effectively the same score — 3.7 for Linea Sketch against 3.7 for Full Screen Viewer. That said, the two scores are not equally well evidenced: Linea Sketch has 802 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Linea Sketch ships an update every 3 months, Full Screen Viewer fortnightly. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 6 level
Linea Sketch versus Full Screen Viewer: the parameters behind the verdict, then further details
ParameterLinea SketchFull Screen Viewer
PriceFreeFree
Rating3.7 (802 ratings) — better3.7 (3 ratings)
Positive reviews62.3% of reviews—
Number of ratings802 — better3
Update frequencyEvery 3 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.013.0 — better
Further details — not scored
Size133 MB31 MB
Age rating4+4+
DeveloperThe IconfactoryAkane Tominaga

Customer experience

Linea Sketch

All ratings793 ratings
Positive65.7%
Neutral8.1%
Negative26.2%
Written reviews337 reviews
Positive62.3%
Neutral15.1%
Negative22.6%

Full Screen Viewer

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Linea Sketch

Reported bugs

4 issues
  • Drawings disappearing or not saving properly
  • Layers and colors not behaving as expected
  • Sudden crashes when switching tools or actions
  • Slow performance and loading issues

Requested features

6 requests
  • Add smudge/blending tool
  • Implement watercolor brush
  • Include text tool and annotation options
  • Support for higher resolution canvases
  • Introduce animation and video features
Show 1 more
  • Improve file management and organization

Full Screen Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Linea Sketch

Subscriptions2
  • Linea Monthly Subscription14 Days trial$1.991 Month
  • Linea Yearly Subscription14 Days trial$19.991 Year
One-time1
  • Linea Full Purchase$59.99
4 purchases

Full Screen Viewer

Subscriptions4
  • One month subscription$1.991 Month
  • PRO version (Monthly)$1.991 Month
  • One year subscription$22.491 Year
Show 1 more
  • PRO version (Yearly)$22.491 Year

Questions

Is Linea Sketch free?
Linea Sketch is free to download, with in-app purchases available.
Is Full Screen Viewer free?
Full Screen Viewer is free to download, with in-app purchases available.
Which has better reviews, Linea Sketch or Full Screen Viewer?
Linea Sketch is rated higher. Linea Sketch averages 3.7 out of 5 from 802 ratings, while Full Screen Viewer averages 3.7 from 3 ratings.
Do Linea Sketch or Full Screen Viewer have ads?
Full Screen Viewer shows ads; Linea Sketch does not.
Which is updated more often, Linea Sketch or Full Screen Viewer?
Linea Sketch ships an update every 3 months, and Full Screen Viewer fortnightly. Most recently, Linea Sketch was updated on October 22, 2026 and Full Screen Viewer on October 21, 2026.

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