# Ducky Model Editor vs Upvia

The clearest difference is in-app purchases: Ducky Model Editor at none against Upvia's 2. Ducky Model Editor also leads on device support (4 vs 2) and iOS requirement (14.0 vs 18.0). Upvia's advantage is update cadence (fortnightly vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Upvia sells 2 one-off in-app purchases. Ducky Model Editor asks for nothing beyond the download.

Ducky Model Editor ships an update every 2 months, Upvia fortnightly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Ducky Model Editor | Upvia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/ducky-model-editor/id1525505933/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 4 MB | 23 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [宏旭 朱](https://appshunter.io/developer/576226204) | [NEKOBIT PTE. LTD.](https://appshunter.io/developer/1493047006) |

## What reviewers say

### Ducky Model Editor

[App page](https://appshunter.io/ios/app/ducky-model-editor/id1525505933)

This app helps developers infer programming language models directly from JSON data. It supports multiple languages and offers customization options to streamline the model creation process.

**Highlights:** Infer JSON Schema, Generate Swift models, Generate Kotlin models, Generate Dart models, Generate Go models, Generate Proto models, Customizable model options

**In-app purchases:** none


### Upvia

[App page](https://appshunter.io/ios/app/upvia/id6748346934)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free Trial | Free | one-time |
| Full App Unlock Forever | $2.99 | one-time |


## Frequently asked questions

### Is Ducky Model Editor free?

Ducky Model Editor is free to download, with no in-app purchases.

### Is Upvia free?

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

### Do Ducky Model Editor or Upvia have ads?

Neither Ducky Model Editor nor Upvia shows ads.

### Which is updated more often, Ducky Model Editor or Upvia?

Ducky Model Editor ships an update every 2 months, and Upvia fortnightly. Most recently, Ducky Model Editor was updated on November 3, 2026 and Upvia on October 30, 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.*