Comparison

Value Study vs KMSKA

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

Head to head
About

Value Study

This app helps artists improve their drawing and painting skills by simplifying reference images into greyscale tones. It allows users to break down complex images into distinct value levels, making it easier to understand light, shadow, and form.

Highlights
  • Simplify images into greyscale tones
  • Adjustable number of value levels
  • Highlight areas of the same value
  • Focus on light, shadow, and form
  • Enhance traditional art studies
  • Cross-device compatibility
Features
Read full description

In art, value (or tone) refers to how light or dark a colour is. If you're learning to paint or draw, doing value studies is one of the best ways to improve. These small, loose sketches in greyscale help you understand where shadows fall and highlights appear—essential for capturing depth and form. Value Study is a simple, focused tool designed to help you see values more clearly in your reference images. Instead of just converting a photo to black and white, this app lets you break down tones step by step. Start with just black and white to map out the biggest shapes, then gradually add more values to refine your understanding. You can also highlight all areas of an image that share the same value, making it easier to see subtle shifts in tone. This is especially useful in complex references, like portraits, where different parts of the image might have the same level of shadow but look completely different in colour. Value Study isn’t here to replace traditional studies—it’s here to enhance them. Whether you're sketching, painting, or working digitally, this tool makes it easier to focus on the fundamentals of light, shadow, and form. Try it for free with all features enabled on sample images from Unsplash before deciding to unlock the full app with a low-cost yearly or lifetime purchase. All Value Study Pro upgrades count as lifetime purchase. Either option will unlock Value Study across iPhone, iPad and Mac. Annual: Auto-renews yearly. Lifetime: One-time payment, no fees. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

KMSKA

Explore the museum with curated audio, video, and text tours. This guide enhances your visit to the Royal Museum of Fine Arts Antwerp.

Highlights
  • Curated museum tours
  • Audio guides
  • Video content
  • Textual information
  • Enhances museum visits
Features
Read full description

De tourgids voor je bezoek aan het KMSKA. Geniet van de gecureerde tours doorheen het museum, uitgerust met audio, video en tekst!

Screenshots

Value Study4 screens
KMSKA4 screens

Verdict

The call

The clearest difference is review sentiment: Value Study at 92% against KMSKA's 0%. Value Study also leads on ratings volume (3.4K vs 17) and rating (4.8 vs 4.6). KMSKA's advantage is in-app purchases (none vs 7). On price, ads, device support and iOS requirement 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. Value Study sells 7 in-app purchases, starting at $7.99 per year. KMSKA asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Value Study holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Value Study has 3.4K ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 92% of Value Study's written reviews are positive against 0% of KMSKA's.

UpkeepUpdate frequency

Value Study ships an update every 2 weeks, KMSKA every 6 weeks. Both last shipped on November 3, 2026.

Scorecard6 real differences · 4 level
Value Study versus KMSKA: the parameters behind the verdict, then further details
ParameterValue StudyKMSKA
PriceFreeFree
Rating4.8 (3.4K ratings) — better4.6 (17 ratings)
Positive reviews92.0% of reviews — better0.0% of reviews
Number of ratings3.4K — better17
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS16.615.0 — better
Further details — not scored
Size37 MB58 MB
Age rating4+4+
DeveloperDiem LimitedKoninklijk Museum voor Schone Kunsten Antwerpen

Customer experience

Value Study

All ratings3,368 ratings
Positive96.7%
Neutral1.3%
Negative2.0%
Written reviews201 reviews
Positive92.0%
Neutral1.5%
Negative6.5%

KMSKA

All ratings15 ratings
Positive93.3%
Neutral0.0%
Negative6.7%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Bugs and requests

Value Study

Reported bugs

2 issues
  • App crashes or fails to launch on some devices
  • Occasional issues with image processing

Requested features

4 requests
  • Add ability to adjust value midpoint
  • Include color study/color adjustment options
  • Provide side-by-side comparison of original and simplified images
  • Add customizable grid overlay

KMSKA

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Value Study

Subscriptions2
  • Value Study Pro$7.991 Year
  • Value Study Pro (yearly)$7.991 Year
One-time5
  • Appreciation$2.99
  • Generous boost$9.99
  • Value Study Pro (Lifetime)$17.99
Show 2 more
  • Value Study$17.99
  • Amazing supporter$24.99
None

KMSKA

No in-app purchases

Questions

Is Value Study free?
Value Study is free to download, with in-app purchases available.
Is KMSKA free?
KMSKA is free to download, with no in-app purchases.
Which has better reviews, Value Study or KMSKA?
Value Study is rated higher. Value Study averages 4.8 out of 5 from 3.4K ratings, while KMSKA averages 4.6 from 17 ratings.
Do Value Study or KMSKA have ads?
Neither Value Study nor KMSKA shows ads.
Which is updated more often, Value Study or KMSKA?
Value Study ships an update every 2 weeks, and KMSKA every 6 weeks. Most recently, Value Study was updated on November 3, 2026 and KMSKA on November 3, 2026.

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