# h2Dr vs Zolly

The clearest difference is review sentiment: Zolly at 100% against h2Dr's 37%. Zolly also leads on rating (5.0 vs 3.6) and iOS requirement (13.0 vs 15.0). h2Dr's advantage is in-app purchases (none vs 5). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Zolly sells 5 one-off in-app purchases. h2Dr asks for nothing beyond the download.

Zolly holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 9 and 17 respectively. Written reviews point the same way: 37% of h2Dr's written reviews are positive against 100% of Zolly's.

## The numbers

| Metric | h2Dr | Zolly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (9 ratings)](https://appshunter.io/ios/app/h2dr/id731368168/reviews) | **[5.0 (17 ratings)](https://appshunter.io/ios/app/zolly-perspective-models/id6736867463/reviews)** |
| Number of ratings | 9 | **17** |
| Positive reviews | 37.1% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | Free |
| Size | 147 MB | 485 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Design Studio Press](https://appshunter.io/developer/731368171) | [Proko](https://appshunter.io/developer/976907261) |

## What reviewers say

### h2Dr

[App page](https://appshunter.io/ios/app/h2dr/id731368168)

This app enhances a drawing book by linking printed pages to online video tutorials. Readers can use their devices to access over 10 hours of advanced video content, keeping the educational material current with rapidly advancing techniques.

**Highlights:** AR trigger image integration, Direct link to online tutorials, Over 10 hours of video content, Updates with advancing techniques, Companion app for a physical book

**In-app purchases:** none


### Zolly

[App page](https://appshunter.io/ios/app/zolly-perspective-models/id6736867463)

Learn dynamic perspective drawing by manipulating camera angles and object proximity. Explore ready-made models and primitive shapes to understand and experiment with perspective distortion for exciting visual effects.

**Highlights:** Learn perspective drawing, Dynamic perspective manipulation, Camera control for distortion, Ready-made and primitive models, Grid lines and ground planes, Understand position and proximity

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| XYZ Forms | $1.99 | one-time |
| Vehicle Pack | $4.99 | one-time |
| Buildings Pack | $4.99 | one-time |
| Home Props Pack | $4.99 | one-time |
| Work Props Pack | $4.99 | one-time |


## Frequently asked questions

### Is h2Dr free?

h2Dr is free to download, with no in-app purchases.

### Is Zolly free?

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

### Which has better reviews, h2Dr or Zolly?

Zolly is rated higher. h2Dr averages 3.6 out of 5 from 9 ratings, while Zolly averages 5.0 from 17 ratings.

### Do h2Dr or Zolly have ads?

Neither h2Dr nor Zolly 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.*