# Data Modeler

> App for creating, visualizing, and exporting data models as JSON. (iPhone/iPad app by Rahul Katariya.)

- Source: https://appshunter.io/ios/app/data-modeler/id1575153701 (this page in markdown: same URL + `.md`)
- Developer: [Rahul Katariya](https://appshunter.io/developer/1680332229)
- Category: Developer Tools, Productivity
- Price: Free with in-app purchases
- Rating: 4.40/5 from 5 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 23 MB
- Languages: American English
- Released: 2021-07-05
- Data updated: 2026-09-09
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/data-modeler/id1575153701/reviews.md

## What is Data Modeler?

Data Modeler: Create, Export, and Visualize Your Data Models

With Data Modeler, you can effortlessly create complex data models for your app, website, or database project.

Create entities and relationships, and define attributes and cardinalities with ease. The editor is intuitive and responsive, with a wide range of tools at your fingertips.

Once you have your data model set up, you can add data to it to make sure it works as expected. And when you're satisfied with your data, you can export it as JSON, so it's ready to use in your projects. You can also view it as a JSON diagram, making it easy to understand its structure and relationships at a glance.

Create Complex Data Models with Ease:
- Design data models quickly and efficiently with a responsive and intuitive editor.
- Add entities, attributes, and cardinalities with a wide range of tools at your fingertips.
- Create relationships between entities and define the type of relationship, cardinality, and properties with ease.
- View your data models as an ER diagram to quickly understand their structure and relationships at a glance.

Add and Export Data as JSON:
- Add and store data from your data models with a responsive and intuitive editor.
- View your data as a JSON diagram to quickly understand their structure and relationships at a glance.
- Analyze complex data models with ease, and identify areas for improvement.
- Export data as JSON document to use in your projects.

In summary, Data Modeler is an easy-to-use app that simplifies data modeling by providing a responsive and intuitive editor, the ability to add data to those data models, and the ability to export data as JSON and visualize them with a JSON diagram. Whether you're a developer, designer, or project manager, Data Modeler has something to offer to improve your workflow and streamline your projects.

Happy Data Modeling!

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Terms of use: https://aarkaystudio.com/terms
Privacy policy: https://aarkaystudio.com/privacy

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $8.49 | per month |
| Annual | $59.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Introductory Lifetime Offer | $89.99 | one-time |


## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/data-modeler/id1575153701/reviews.md

### 4/5 — Great App Missing a Few Features

*2026-05-12*

This app is great for quickly modeling your data if you are working to build a new app. The ONE glaring feature it is missing is exporting the model into something that we can use outside the app to build our Schemas. I would like to add this model to my GitHub repo so I can move it between computers and project folders but I don’t currently see a way to do so.

### 5/5 — Feature request

*2024-12-01*

Please provide an option for backup or export as sometimes we may have to change devices or any other issues.

### 5/5 — Fantastic

*2024-04-24*

A truly excellent app for developing data models while on the go! The different views make keeping track of a complex model incredibly simple. Very well done!

### 5/5 — Database data modeling for medical field

*2024-04-14*

This truly a great app and it is very helpful with current data structure and it’s interface. Oracle is one those pioneer company to model after in the IT industry:)

### 1/5 — Abo-Modell!!!!

*2023-09-29, version 2.4.5*

Es scheint mir mittlerweile mehr als üblich zu, sein, mit Abo-Modellen eine Goldgrube gefunden zu haben. Meine klare Antwort an den Entwickler, erstickt an Euren Abo-Modellen!!!!

### 4/5 — Nearly perfect!

*2023-09-22*

Could you add a local mode for when I’m trying to setup a data model in a place without any connection?

Other than that super great to use

### 1/5 — Disappointed

*2023-02-06*

It doesn't work at all, useless, don't waste your time.

### 1/5 — Completely Broken, Poor UI

*2022-09-15*

The UI is tedious and does not save values you’ve entered most times. Skip this one.

### 4/5 — Great Tool, Missing Key Features

*2022-06-14*

I wish this tool had some expanded features like sorting or exporting models to different programming languages. Otherwise, I love using this tool to make visualized DB relationships and presenting to our dev team before spec.ing everything out

### 1/5 — will not save data and other quirks

*2022-04-13*

Downloaded this, seems pretty good but quirky. For example
... in the editor lists in the left pane  are not alphabetical
... there is no way to delete an attribute
But the worst thing is there is no "save" function!  Spent about an hour working on a project, clicked on "close" and it disappeared. No "do you want to save" no save button, nothing!

## Frequently asked questions about Data Modeler

### What is Data Modeler used for?

Data Modeler is used to create, visualize, and export data models. It allows users to design entities, attributes, and relationships, add data to test models, and export them as JSON or diagrams.

### What devices does Data Modeler support?

Data Modeler is available on Mac, iPhone, and iPad, making it accessible across multiple Apple platforms for your data modeling needs.

### How often is Data Modeler updated?

The latest version of Data Modeler was released on March 27, 2026, indicating a recent update. Users can expect ongoing improvements and feature additions.

### What is the age rating for Data Modeler?

Data Modeler has an age rating of 4+, making it suitable for a wide range of users, including younger individuals learning about data structures.

### Can I export my data models from Data Modeler?

Yes, Data Modeler allows you to export your created data models as JSON documents, which can then be readily used in your projects.

### What are the subscription plans for Data Modeler?

Data Modeler offers both monthly subscriptions at $8.49 and annual subscriptions for $59.99, providing flexible options for users.

### Does Data Modeler have ads?

No, Data Modeler does not contain advertisements. Users can enjoy an ad-free experience while working on their data models.

### What is the user rating for Data Modeler?

Data Modeler is highly rated by its users, holding a score of 4.4 stars based on 5 ratings, indicating a positive user experience.

## Version history (last 5 releases)

### 2.7.0 — 2026-03-27

- Deprecated Data flow
- Various stability and performance improvements

### 2.6.1 — 2026-03-25

Fixed overlapping edges — Multiple relationships between the same entities are now visually separated, making each connection clearly distinguishable.

### 2.6.0 — 2026-03-20

Interactive Canvas Editing

- Edit your data models directly on the canvas! Add, update, and delete entities, attributes, and relationships right where you see them — no need to switch to the Editor tab. Tap any entity on the canvas to open inline edit sheets for quick changes.

### 2.5.0 — 2026-02-21

Canvas Improvements
- Zoom controls with keyboard shortcuts for faster navigation
- Scale-to-fit to instantly center your diagram in view
- Select edges to highlight related relationships
- Smoother scrolling and improved performance with viewport optimization

Platform Updates
- Built for iOS 26 and macOS 26

### 2.4.10 — 2024-02-07

Minor bug fixes and improvements!

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## More apps by Rahul Katariya

- [JSONDoc](https://appshunter.io/ios/app/jsondoc/id6462685403)
- [VerseWell](https://appshunter.io/ios/app/versewell/id6677063119)

All apps by Rahul Katariya: https://appshunter.io/developer/1680332229

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*