Comparison

Value Study Assistant vs Undertone

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

Head to head
About

Value Study Assistant

This app simplifies photos into distinct light and dark masses, helping artists analyze composition and value structure before painting. It offers adjustable value levels, comparison tools, and cropping to standard art proportions.

Highlights
  • Simplify photos into 2-10 value levels
  • Compare original photo with simplified study
  • Adjust individual value groups
  • Crop to standard painting proportions
  • Download value studies as JPG
Features
Read full description

Value Study Assistant helps painters see the big picture before they begin painting. Upload any photo and instantly simplify it into clear value masses — from 2 to 10 levels of light and dark. Instead of getting lost in detail, you'll quickly see the essential shapes that create a strong composition. HOW IT WORKS 1) Upload your photo and choose 2–10 value levels with the slider. Two values gives you a classic notan — the fastest way to check your big shapes. 2) Use the Color / Values comparison slider to flip between your original reference and the simplified study. 3) Tap Modify Values to lighten or darken individual value groups until the structure reads right. 4) Crop your reference to any standard painting proportion — 4:5, 5:7, 11:14 and more — with pinch-to-zoom control. 5) Download your value study as a clean JPG to use beside your easel, on your tablet, or printed in the studio. Perfect for painters, illustrators, and art students who want to understand the value structure of their reference before committing to canvas. BUILT FOR PAINTERS Value Study Assistant helps you: • Quickly break down any photo into simple light and dark shapes • Check your notan with a two-value study • See the value structure of a scene before you paint • Strengthen compositions by focusing on major value relationships • Crop references to standard painting proportions • Work seamlessly on iPhone and iPad TRY EVERYTHING FREE Your first 2 photos unlock every feature — the full 2–10 value range, value fine-tuning, and cropping — plus 3 free downloads. Studio Access keeps the full toolkit forever with unlimited downloads. Try it free for 7 days.

About

Undertone

Features
Read full description

Every image has a color structure. Undertone shows it to you. Bring in any image, a photo, a painting, a screenshot. In seconds, the app breaks down the color structure underneath: palette, harmony, temperature, and value. The relationships that make an image feel right, made visible. All processing happens on your device. Your images never leave your device. What you get with every analysis: Palette with proportions. Not flat swatches. Dominant colors shown by actual weight. A 60% warm neutral with a 5% cool accent is a different palette than 50/50. Every color labeled with hex codes and painter-friendly names. Yellow Ochre, not "Autumn Sunset Dream." Color harmony. The relationship between your colors identified and named: complementary, analogous, triadic, split-complementary, tetradic, square, monochromatic, or honestly, none. Not every image has a clean harmony, and Undertone won't pretend. Colors plotted on a wheel so you can see the geometry. Temperature map. A warm-cool overlay on your image that makes the invisible visible. Muddy shadows? Probably a temperature problem, warm paint leaking into your cools. Golden hour magic? Warm light forces cool shadows by contrast. Toggle the map on, and the thing you couldn't diagnose becomes obvious. Value structure. Your image stripped to grayscale, divided into clear zones: light, mid-tone, dark. Value does more work than color. A painting with strong values and wrong colors still reads. This automates the painter's squint. Built for people who work with color: Painters studying a master painting at the museum, analyzing a reference before mixing, or diagnosing why the shadows look muddy. Photographers translating a mood board into concrete editing decisions, or understanding why golden hour works so they can repeat it. Designers extracting palettes from real-world references and showing clients why a color scheme works. With evidence, not "trust me." Art students crossing the gap between intuition and understanding. Every analysis is a micro-lesson in color theory. Every analysis is saved automatically. Your library becomes a personal color reference you can browse anytime. Free: 20 analyses at a time with the Original, Temperature, Values, and Saturation modes, plus the palette and harmony for every image. Premium: Composition (10 guide types), Contrast focal analysis, tinted value bands, unlimited history, full-resolution export. One-time purchase. No subscription. Stop guessing. Start seeing.

Screenshots

Value Study Assistant4 screens
Undertone4 screens

Verdict

The call

The clearest difference is in-app purchases: Value Study Assistant at none against Undertone's 1. Undertone's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads 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. Undertone sells 1 one-off in-app purchase. Value Study Assistant asks for nothing beyond the download.

UpkeepUpdate frequency

Value Study Assistant ships an update every 4 days, Undertone weekly. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 6 level
Value Study Assistant versus Undertone: the parameters behind the verdict, then further details
ParameterValue Study AssistantUndertone
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS17.015.0 — better
Further details — not scored
Size5 MB37 MB
Age rating4+4+
DeveloperKristina NelsonPaintingstack Technologies SpA

In-app purchases

None

Value Study Assistant

No in-app purchases

1 purchases

Undertone

One-time1
  • Lifetime Premium$9.99

Questions

Is Value Study Assistant free?
Value Study Assistant is free to download, with no in-app purchases.
Is Undertone free?
Undertone is free to download, with in-app purchases available.
Do Value Study Assistant or Undertone have ads?
Neither Value Study Assistant nor Undertone shows ads.
Which is updated more often, Value Study Assistant or Undertone?
Value Study Assistant ships an update every 4 days, and Undertone weekly. Most recently, Value Study Assistant was updated on October 1, 2026 and Undertone on October 8, 2026.

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