Value Study vs KMSKA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
KMSKA
Explore the museum with curated audio, video, and text tours. This guide enhances your visit to the Royal Museum of Fine Arts Antwerp.
- Curated museum tours
- Audio guides
- Video content
- Textual information
- Enhances museum visits
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De tourgids voor je bezoek aan het KMSKA. Geniet van de gecureerde tours doorheen het museum, uitgerust met audio, video en tekst!
Screenshots
Verdict
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
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.
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.
Value Study ships an update every 2 weeks, KMSKA every 6 weeks. Both last shipped on November 3, 2026.
| Parameter | Value Study | KMSKA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (3.4K ratings) — better | 4.6 (17 ratings) |
| Positive reviews | 92.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 3.4K — better | 17 |
| Update frequency | Every 2 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Diem Limited | Koninklijk Museum voor Schone Kunsten Antwerpen |
Customer experience
Value Study
KMSKA
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
Value Study
- Value Study Pro$7.991 Year
- Value Study Pro (yearly)$7.991 Year
- Appreciation$2.99
- Generous boost$9.99
- Value Study Pro (Lifetime)$17.99
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- Value Study$17.99
- Amazing supporter$24.99
KMSKA
No in-app purchases








