# Dexa vs One Dev Tools

The clearest difference is in-app purchases: Dexa at none against One Dev Tools's 2. Dexa also leads on device support (4 vs 1). One Dev Tools's advantage is iOS requirement (17.6 vs 26.0). On price and ads there is nothing between them.

Both are free to download. One Dev Tools sells 2 one-off in-app purchases. Dexa asks for nothing beyond the download.

## The numbers

| Metric | Dexa | One Dev Tools |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 20 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ale Mohamad](https://appshunter.io/developer/569018219) | [Selma Lindqvist](https://appshunter.io/developer/1896618449) |

## What reviewers say

### Dexa

[App page](https://appshunter.io/ios/app/dexa-uml-class-diagrams/id6762662634)

Create professional UML class diagrams visually or with code. Supports PlantUML and Mermaid syntax, offering a drag-and-drop interface with auto-layout. Export diagrams in high-resolution formats and sync seamlessly across Apple devices.

**Highlights:** Visual drag-and-drop editor, PlantUML and Mermaid import/export, Six relationship types, Classes, interfaces, abstract classes, enums, Auto-layout algorithm, PNG/PDF export, iCloud sync

**Features:** Family Sharing

**In-app purchases:** none


### One Dev Tools

[App page](https://appshunter.io/ios/app/one-dev-tools/id6768955248)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Theme Neon Violet | $1.99 | one-time |
| One Casino | $1.99 | one-time |


## Frequently asked questions

### Is Dexa free?

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

### Is One Dev Tools free?

One Dev Tools is free to download, with in-app purchases available.

### Do Dexa or One Dev Tools have ads?

Neither Dexa nor One Dev Tools 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.*