# ErrataCorrige vs Flatify

The clearest difference is update cadence: ErrataCorrige at every 4 weeks against Flatify's every 20 months. ErrataCorrige also leads on device support (4 vs 1) and iOS requirement (14.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. ErrataCorrige sells 4 one-off in-app purchases and Flatify sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

ErrataCorrige ships an update every 4 weeks, Flatify every 20 months. The most recent releases landed on September 15, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | ErrataCorrige | 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 20 months |
| Monetization | — | Free |
| Size | 44 MB | 11 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Massimo Pavanel](https://appshunter.io/developer/1448634706) | [STRICS IT GmbH](https://appshunter.io/developer/1498799328) |

## What reviewers say

### ErrataCorrige

[App page](https://appshunter.io/ios/app/erratacorrige/id1448634707)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 errataCoin recharge | $1.99 | one-time |
| 50 errataCoin recharge | $2.99 | one-time |
| 75 errataCoin recharge | $3.99 | one-time |
| 100 errataCoin reload | $4.99 | one-time |


### 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 ErrataCorrige free?

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

### Is Flatify free?

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

### Do ErrataCorrige or Flatify have ads?

Neither ErrataCorrige nor Flatify shows ads.

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

ErrataCorrige ships an update every 4 weeks, and Flatify every 20 months. Most recently, ErrataCorrige was updated on September 15, 2026 and Flatify on August 19, 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.*