# Head Model Studio vs Gridder

The clearest difference is in-app purchases: Gridder at none against Head Model Studio's 4. Gridder also leads on rating (5.0 vs 4.6) and iOS requirement (12.0 vs 16.4). Head Model Studio's advantage is ratings volume (2.4K vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Head Model Studio sells 4 in-app purchases, starting at $9.00 per month. Gridder asks for nothing beyond the download.

Gridder holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Head Model Studio has 2.4K ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Head Model Studio | Gridder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/head-model-studio-art-study/id1527028690/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gridder/id6745344814/reviews)** |
| Number of ratings | **2.4K** | 1 |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2.2 GB | 34 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wes Castain](https://appshunter.io/developer/1527028692) | [Qing Yan](https://appshunter.io/developer/1811869658) |

## What reviewers say

### Head Model Studio

[App page](https://appshunter.io/ios/app/head-model-studio-art-study/id1527028690)

This app provides 3D reference models for artists to study and draw faces. It offers detailed control over lighting and rendering to help users understand facial planes and tones, aiding in portrait drawing practice.

**Highlights:** 25 detailed 3D head models, Full 3D model control (zoom, tilt, rotate), Realistic environmental and studio lighting, Customizable rendering with edge outlines, Pre-made practice scenes, Study facial planes and geometry

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Access | $9.00 | per month |
| 1 Year Access | $16.00 | per year |
| 1 Year Access | $23.00 | one-time |
| Lifetime Access | $50.00 | one-time |

**What reviewers like**

- 🎨 Excellent reference tool for artists
- 🔍 Helpful for understanding head anatomy and planes
- 🔧 Customizable lighting and model features
- 💰 Reasonable subscription pricing

**What reviewers complain about**

- 💰 Premium features locked behind paywall
- 🔒 Lack of free trial to test premium content
- 🔧 Limited customization options for free users
- 🐛 Occasional technical issues with lighting and model adjustments

**Reported bugs**

- Sudden loss of model functionality after updates
- Overheating issues on some devices

**Requested features**

- Add female Loomis head models
- Expand customization options for paid users
- Implement full-body reference models
- Provide option for one-time lifetime purchase


### Gridder

[App page](https://appshunter.io/ios/app/gridder/id6745344814)

Easily add customizable grid lines to your photos. Perfect for artists and illustrators, this tool lets you import images, adjust grid settings like line thickness and color, and export your work for sketching or reference.

**Highlights:** Import and crop images, Customizable grid lines, Adjust rows and columns, Control line thickness and opacity, Change grid line color, Export images with grid

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Head Model Studio free?

Head Model Studio is free to download, with in-app purchases available.

### Is Gridder free?

Gridder is free to download, with no in-app purchases.

### Which has better reviews, Head Model Studio or Gridder?

Gridder is rated higher. Head Model Studio averages 4.6 out of 5 from 2.4K ratings, while Gridder averages 5.0 from 1 ratings.

### Do Head Model Studio or Gridder have ads?

Neither Head Model Studio nor Gridder shows ads.

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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.*