# Value Study vs EdgeDetectionCamera

The clearest difference is review sentiment: Value Study at 92% against EdgeDetectionCamera's 47%. Value Study also leads on ads (none vs shown) and rating (4.8 vs 4.4). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Value Study sells 7 in-app purchases, starting at $3.99 per year and EdgeDetectionCamera sells 1 in-app purchase, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Value Study holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Value Study has 3.3K 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 47% of EdgeDetectionCamera's.

Value Study ships an update every 2 weeks, EdgeDetectionCamera every 3 months. The most recent releases landed on September 29, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Value Study | EdgeDetectionCamera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.3K ratings)](https://appshunter.io/ios/app/value-study-art-reference/id1546616127/reviews)** | [4.4 (17 ratings)](https://appshunter.io/ios/app/edgedetectioncamera/id1590712443/reviews) |
| Number of ratings | **3.3K** | 17 |
| Positive reviews | **92.0% of reviews** | 47.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 35 MB | 14 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Diem Limited](https://appshunter.io/developer/1439019995) | [Mitsuhiro Hashimoto](https://appshunter.io/developer/509482512) |

## What reviewers say

### Value Study

[App page](https://appshunter.io/ios/app/value-study-art-reference/id1546616127)

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:** Family Sharing, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Value Study Pro | $3.99 | per year |
| Value Study Pro (yearly) | $14.99 | per year |
| Appreciation | $2.99 | one-time |
| Value Study Pro (Lifetime) | $9.99 | one-time |
| Generous boost | $9.99 | one-time |
| Amazing supporter | $24.99 | one-time |
| Value Study | $29.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful for value studies
- 💡 Allows adjusting number of values
- 🎨 Useful for artists and painters
- ⭐ Great tool for beginners

**What reviewers complain about**

- 🐛 Issues with accurately representing blue hues
- 🔍 Difficulty finding/importing photos
- 🤔 Unclear instructions/lack of tutorial

**Reported bugs**

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

**Requested features**

- 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


### EdgeDetectionCamera

[App page](https://appshunter.io/ios/app/edgedetectioncamera/id1590712443)

Easily transform photos and camera feeds into manga-style line drawings. Adjust line thickness and transparency for custom backgrounds. Export your creations to share with other applications.

**Highlights:** Extract line drawings from photos, Real-time line drawing from camera, Adjustable line thickness, Make white areas transparent, Export and share images

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per 7 days |


## Frequently asked questions

### Is Value Study free?

Value Study is free to download, with in-app purchases available.

### Is EdgeDetectionCamera free?

EdgeDetectionCamera is free to download, with in-app purchases available.

### Which has better reviews, Value Study or EdgeDetectionCamera?

Value Study is rated higher. Value Study averages 4.8 out of 5 from 3.3K ratings, while EdgeDetectionCamera averages 4.4 from 17 ratings.

### Do Value Study or EdgeDetectionCamera have ads?

EdgeDetectionCamera shows ads; Value Study does not.

### Which is updated more often, Value Study or EdgeDetectionCamera?

Value Study ships an update every 2 weeks, and EdgeDetectionCamera every 3 months. Most recently, Value Study was updated on September 29, 2026 and EdgeDetectionCamera on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*