Comparison

Value Study vs Doodle Grid for Artists

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 skills by analyzing light and shadow in reference images. It allows users to break down tones step-by-step, from simple black and white to more complex value ranges, aiding in the understanding of depth and form. It's a tool to enhance traditional art studies.

Highlights
  • Step-by-step tone breakdown
  • Highlighting areas of same value
  • Focus on light, shadow, and form
  • Greyscale value studies
  • Works with reference images
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

Doodle Grid for Artists

This app offers a modern approach to transferring and scaling artwork, allowing artists to create drawings and paintings of any size. It provides a more flexible and time-saving alternative to traditional gridding methods, minimizing distortion and offering an easy-to-use interface.

Highlights
  • Transfer and scale artwork
  • Flexible doodle grids
  • Time-saving grid creation
  • Free-flowing shapes
  • Easy interface for image adjustment
  • Minimizes distortion
  • Versatile for various art mediums
Features
Read full description

Introducing Doodle Grid by Da Vinci Eye - the fun, innovative app that simplifies the way you transfer and scale your artwork! Ditch the traditional grid methods and embrace the world of Doodle Grids, also known as Lazy Grids or Scribble Grids. With this app, artists of all levels can easily create stunning drawings and paintings of any size, from small sketches to grand murals. Doodle Grids provide several advantages over traditional gridding systems: - Time-saving: No need to spend hours measuring and drawing precise lines for your grid. - More freedom: Create unique, free-flowing shapes instead of being confined to rigid squares. - Easy-to-use interface: Quickly adjust opacity and position your reference image with just a few taps. - Versatile: Suitable for various art mediums and styles, from detailed portraits to abstract pieces. - Minimizes distortion: Helps you maintain accurate proportions without the risk of distortion from straight lines and angles. Whether you're working on a detailed portrait, a vibrant landscape, or a captivating abstract piece, Doodle Grid is your go-to companion. Download now and elevate your creative process!

Screenshots

Value Study4 screens
Doodle Grid for Artists4 screens

Verdict

The call

The clearest difference is in-app purchases: Doodle Grid for Artists at none against Value Study's 7. Value Study's advantage is update cadence (fortnightly vs every 5 months) and ratings volume (3.3K vs 62). On price, rating, review sentiment 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. Value Study sells 7 in-app purchases, starting at $3.99 per year. Doodle Grid for Artists asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Value Study against 4.8 for Doodle Grid for Artists. That said, the two scores are not equally well evidenced: Value Study has 3.3K ratings behind it against 62, so its average is the more settled of the two. Written reviews are what separate them: 92% of Value Study's written reviews are positive against 86% of Doodle Grid for Artists's.

UpkeepUpdate frequency

Value Study ships an update fortnightly, Doodle Grid for Artists every 5 months. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
Value Study versus Doodle Grid for Artists: the parameters behind the verdict, then further details
ParameterValue StudyDoodle Grid for Artists
PriceFreeFree
Rating4.8 (3.3K ratings)4.8 (62 ratings)
Positive reviews92.0% of reviews — better85.7% of reviews
Number of ratings3.3K — better62
Update frequencyFortnightly — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.615.6 — better
Further details — not scored
Size35 MB92 MB
Age rating4+4+
DeveloperDiem LimitedDa Vinci Eye LLC

Customer experience

Value Study

All ratings3,333 ratings
Positive96.7%
Neutral1.3%
Negative2.0%
Written reviews200 reviews
Positive92.0%
Neutral1.5%
Negative6.5%

Doodle Grid for Artists

All ratings62 ratings
Positive93.5%
Neutral3.2%
Negative3.2%
Written reviews7 reviews
Positive85.7%
Neutral14.3%
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

Doodle Grid for Artists

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Value Study

Subscriptions2
  • Value Study Pro$3.991 Year
  • Value Study Pro (yearly)$6.991 Year
One-time5
  • Appreciation$2.99
  • Value Study Pro (Lifetime)$9.99
  • Generous boost$9.99
Show 2 more
  • Value Study$17.99
  • Amazing supporter$24.99
None

Doodle Grid for Artists

No in-app purchases

Questions

Is Value Study free?
Value Study is free to download, with in-app purchases available.
Is Doodle Grid for Artists free?
Doodle Grid for Artists is free to download, with no in-app purchases.
Which has better reviews, Value Study or Doodle Grid for Artists?
Value Study and Doodle Grid for Artists are both rated 4.8 out of 5 on the App Store, from 3.3K and 62 ratings respectively.
Do Value Study or Doodle Grid for Artists have ads?
Neither Value Study nor Doodle Grid for Artists shows ads.
Which is updated more often, Value Study or Doodle Grid for Artists?
Value Study ships an update fortnightly, and Doodle Grid for Artists every 5 months. Most recently, Value Study was updated on October 15, 2026 and Doodle Grid for Artists on October 1, 2026.

Other comparisons