# Hydra vs Flatify

The clearest difference is in-app purchases: Hydra at none against Flatify's 3. Hydra also leads on update cadence (every 2 months vs every 20 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Flatify sells 3 in-app purchases, starting at $8.99 per month. Hydra asks for nothing beyond the download.

Hydra ships an update every 2 months, Flatify every 20 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Hydra | Flatify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/flatify-2d-objects-to-cad/id6444910637/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 20 months |
| Monetization | — | Free |
| Size | 53 MB | 11 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GoApp s.r.l.](https://appshunter.io/developer/435482060) | [STRICS IT GmbH](https://appshunter.io/developer/1498799328) |

## What reviewers say

### Hydra

[App page](https://appshunter.io/ios/app/hydra/id1465392538)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flatify

[App page](https://appshunter.io/ios/app/flatify-2d-objects-to-cad/id6444910637)

Transform images of 2D objects into precise CAD files with powerful perspective correction. Easily trace stencils or forms to create detailed drawings for artists, designers, and engineers. Offers a free tier for limited use.

**Highlights:** Perspective correction for top-down views, Convert images to DXF CAD files, Intuitive tracing function, Cloud export and download, Four-step workflow

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $8.99 | per month |
| Yearly Premium | $79.99 | per year |
| Lifetime Premium | $249.99 | one-time |


## Frequently asked questions

### Is Hydra free?

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

### Is Flatify free?

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

### Do Hydra or Flatify have ads?

Neither Hydra nor Flatify shows ads.

### Which is updated more often, Hydra or Flatify?

Hydra ships an update every 2 months, and Flatify every 20 months. Most recently, Hydra was updated on October 7, 2026 and Flatify on October 14, 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.*