As a UI Designer/Developer, you are always trying to create the best possible interfaces.
With QuickLens, you can ensure that your implementation matches the design.

QuickLens allows you to:

• Zoom into Pixels
• Measure Dimensions
• Sample Colors
• Inspect Alignments

...all through a suite of tools:
• Lens • Ruler • Frame • Guide • Tape • Monocle • Crosshair

Each tool has a clearly defined purpose and does one thing exceedingly well.
When combined with other tools, you can bring out the true power of QuickLens.

- Zoom into pixels
- Sample colors
- Make precise pixel measurements
- Capture snapshots with the pixel grid

- Measure vertical and horizontal distances
- Switch between several units: points, inches, centimeters, millimeters, picas

- Measure width and height of on-screen elements
- Setup grids with row and columns to overlay on your designs
- Includes Golden Grids with spirals
- Save and manage grid presets
- Capture snapshots and videos with the overlay grids

- Inspect alignments with screen-wide guides
- Setup guides on multiple monitors
- Save and load guides

- Measure length between any two points on the screen
- Switch between various units: points, inches, centimeters, millimeters, picas
- Do shape measurements by overlaying Circle, Ellipse, Square and Rectangle
- See details in the Inspector
- Measure angles

- A handy presentation tool
- Zoom into any part of the screen with 5 different zoom levels
- Change shapes and sizes
- Dim rest of the screen to focus on zoomed in area
- Move between monitors seamlessly

- View screen-wide crosshair
- Use for quick alignment checks
- See the location with the origin at the top (Design mode) or bottom (Developer mode)
- Toggle the distance mode to see real-time distances between screen elements

What’s New

Version 1.8.3

Bug fixes and stability improvements

Ratings and Reviews

3.7 out of 5
15 Ratings

15 Ratings

spliceguys ,

Nice, but needs a setting option

I needed an app with on screen ruler as well as guides. this app has these and more, however, the ruler, while it has the options of switching units, does not have a method to see 'real' inches as opposed to inches shown in DPI.. Since I have a high resolution screen, an inch shows up as approximately 3/4 of an inch on screen. I think DPI inches are great, but there should be a setting to say I have xx number of DPI so that I can show a real life inches on screen. I want to show someone the exact size they will see a printed document, not, imagine this 30% larger.

Bleeny ,

Abandoned app? I may need to move back to XScope :(

I really want to like this - but some things seem to be broken. This was last updated 2 years ago, so maybe it's been abandoned. The hot keys just don't work. I've tried resetting the app to it's default settings, but still nothing. When I start the app jusrt to launch some measly guides, they do show up - when I want to toggle them off, the hot keys don't work. I can go to the menu bar, but the 'guides' section is greyed out. I have to close all and start again to do anything new. And this is just for the guides. I can't really tell what the problem is. The only thing I can think of is the fact that I'm now using a second monitor, but it launches on the active monitor and pretends to work. There are links here on the App Store to 'Support" but it goes to the website, where there is no place I can find to ask a support question. Sooo, even though there's supposedly a lot of functionality for $10, it needs to work. This app hasn't been updated in two years, but you ARE still selling it - so I expect that if there's an issue, we should be able to reach you. This isn't really the forum for that, but it's all I have.

I would love to be able to resolve these issues, but if I can't I'll be moving on to one of your many competitors.

Nate Pickens ,

Switched from xScope to QuickLens

I’m a long-time xScope user (~10 years) for design and web development. It's a very useful tool, but $50 over and over for every new version is a bit much for what it does. I've tried to switch to other tools over the years, but they've always lacked something. QuickLens, however, nails it. 80% cheaper and does everything I ever used xScope for just as well if not better. The keyboard shortcuts (and the associated help documentation for them) are really fantastic. 5 stars all the way.

Developer Response ,

Thanks Nate for the really kind words! Made our day 😇


8.2 MB
Developer Tools

OS X 10.10 or later, 64-bit processor



Age Rating
Rated 4+


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.