# Value Study vs Tattoo Inkprep

The clearest difference is update cadence: Tattoo Inkprep at every 5 days against Value Study's every 2 weeks. Tattoo Inkprep also leads on iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases 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 Tattoo Inkprep sells 2 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.

Value Study ships an update every 2 weeks, Tattoo Inkprep every 5 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Value Study | Tattoo Inkprep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.3K ratings)](https://appshunter.io/ios/app/value-study-art-reference/id1546616127/reviews)** | — |
| Number of ratings | **3.3K** | — |
| Positive reviews | 92.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 69 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Diem Limited](https://appshunter.io/developer/1439019995) | [Guillermo Andujar](https://appshunter.io/developer/6779962404) |

## 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) | $6.99 | per year |
| Appreciation | $2.99 | one-time |
| Value Study Pro (Lifetime) | $9.99 | one-time |
| Generous boost | $9.99 | one-time |
| Value Study | $17.99 | one-time |
| Amazing supporter | $24.99 | 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


### Tattoo Inkprep

[App page](https://appshunter.io/ios/app/tattoo-inkprep/id6779962402)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inkprep Pro | $11.99 | per month |
| Inkprep Pro | $89.99 | per year |


## Frequently asked questions

### Is Value Study free?

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

### Is Tattoo Inkprep free?

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

### Do Value Study or Tattoo Inkprep have ads?

Neither Value Study nor Tattoo Inkprep shows ads.

### Which is updated more often, Value Study or Tattoo Inkprep?

Value Study ships an update every 2 weeks, and Tattoo Inkprep every 5 days. Most recently, Value Study was updated on October 12, 2026 and Tattoo Inkprep on October 8, 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.*