Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download ValueViewer by Mark Putnam, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC


By Mark Putnam

Open iTunes to buy and download apps.


ValueViewer is an easy-to-use tool for artists who paint from life. Whether "en plein air" or in the studio, ValueViewer will allow the user to take a photo of their subject, view it in grayscale, or posterize it into two or three values. You may also select an existing image directly from a photo album on your iPhone or iPad.

Controls let you adjust the light, mid-tone, and dark area of your image to "key" your painting correctly, and assist in helping you "see" value, even in the most unforgiving light. The image can be zoomed in and out, scrolled, and rotated into position to help you find just the right composition for your painting. Convenient adjustable 'frame' overlays help you crop the image to fit your canvas, and grids can be displayed to help you to compose your painting or transfer the image to your canvas.

Experience artists consider the ValueViewer an "indespensible" tool, and even use it check the integrity of their composition and color choices as they work on a painting.

Thousands of amateur and professional artists rely on the ValueViewer everyday.

What's New in Version 3.6.2

- Completely fixes a handful of troublesome bugs such as the "frozen," "vanishing," or "mis-positioned" controls ribbon.

- Optimized interface for iPhone5, iPad, and older iPhone models.

- iOS 7.x ready, but still supports iOS 6.x.

- Added Rabatment grid option.

- About the Frame: The ValueViewer adjusts a frame to optimize your device's display. As a result, height and width may be swapped.

- About the Grid: In order to show a Grid, you must first choose to show a frame.


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4
iPhone Screenshot 5
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4

Customer Reviews

A must-have app for every artist

I heard about this app from reading Jo Mackenzie’s book Three-Step Watercolors. I had been looking for an app that would help me view the NOTAN patterns in my photo references before I started a new art piece.

After getting tired of squinting all the time to look at my photo reference to discern the NOTAN patterns, I was grateful to discover the existence of this app.

I like that I am able to get both the gray-scale and the NOTAN views of any of the photos I have in either my iPhone or the iPad. The app works best for my aging eyes in the iPad because of its larger screen.


Great app that works smoothly with a nice interface. It has helpful functions for visualizing plein air painting. Please, for the grids, I would say add a thirds grid. That would make the app more perfect, but it is 5 stars as is.

A Must Have for Painters

This wonderful app has become my daily painting indispensable assistant. User friendly, functional, well designed. How did I paint without it? I heartily recommend this app.

View In iTunes
This app is designed for both iPhone and iPad
  • $4.99
  • Category: Productivity
  • Updated:
  • Version: 3.6.2
  • Size: 50.9 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

Current Version:
All Versions: