# Data Modeler vs Apollon

The clearest difference is review sentiment: Data Modeler at 55% against Apollon's 0%. Data Modeler also leads on rating (4.4 vs 3.0) and update cadence (every 5 days vs every 15 months). Apollon's advantage is in-app purchases (none vs 3) and iOS requirement (15.0 vs 17.6). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Data Modeler sells 3 in-app purchases, starting at $8.49 per month. Apollon asks for nothing beyond the download.

Data Modeler holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 55% of Data Modeler's written reviews are positive against 0% of Apollon's.

Data Modeler ships an update every 5 days, Apollon every 15 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Data Modeler | Apollon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/data-modeler/id1575153701/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/apollon-uml-modeling-editor/id6474762031/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | **54.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 15 months |
| Monetization | Freemium | **Free** |
| Size | 23 MB | 18 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rahul Katariya](https://appshunter.io/developer/1680332229) | [TUM Applied Education Technologies](https://appshunter.io/developer/1722474982) |

## What reviewers say

### Data Modeler

[App page](https://appshunter.io/ios/app/data-modeler/id1575153701)

Effortlessly create, visualize, and export complex data models for your projects. Design entities, relationships, and attributes with an intuitive editor. Add data to test your models and export them as JSON documents or diagrams.

**Highlights:** Intuitive data model editor, Create entities, attributes, and relationships, Define cardinalities and relationship types, Add and store data within models, Visualize models as ER diagrams, Export data as JSON documents

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $8.49 | per month |
| Annual | $59.99 | per year |
| Introductory Lifetime Offer | $89.99 | one-time |


### Apollon

[App page](https://appshunter.io/ios/app/apollon-uml-modeling-editor/id6474762031)

Create UML and software design diagrams on your iPhone and iPad. Supports 13 notations, templates, and offline work. Export to various formats or share for collaboration.

**Highlights:** 13 diagram notations, Templates and blank canvas, Touch-friendly interface, Offline diagram creation, Export to SVG, PNG, PDF, PPTX, JSON, Share for collaboration

**In-app purchases:** none


## Frequently asked questions

### Is Data Modeler free?

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

### Is Apollon free?

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

### Which has better reviews, Data Modeler or Apollon?

Data Modeler is rated higher. Data Modeler averages 4.4 out of 5 from 5 ratings, while Apollon averages 3.0 from 2 ratings.

### Do Data Modeler or Apollon have ads?

Neither Data Modeler nor Apollon shows ads.

### Which is updated more often, Data Modeler or Apollon?

Data Modeler ships an update every 5 days, and Apollon every 15 months. Most recently, Data Modeler was updated on September 9, 2026 and Apollon on September 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.*