Comparison

Data Modeler vs ER Diagram AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Data Modeler

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
Read full description

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

About

ER Diagram AI

Design and visualize database schemas effortlessly with AI assistance. Quickly generate schemas from outlines, make detailed adjustments, and convert diagrams to SQL for various databases. Ideal for new development, reviews, collaboration, and learning.

Highlights
  • AI-assisted schema generation
  • Automatic SQL conversion
  • Intuitive editing
  • Multi-device support via Google Drive
  • Export and share diagrams
  • Text-based editing with Mermaid notation
  • Dark theme support
Features
Read full description

Database design is crucial for developing apps and web services. However, designing and visualizing a schema can be time-consuming and complex. With this app, developers can design DB schemas effortlessly. Even with a rough outline, the app can automatically build the schema, and more detailed adjustments can also be made as needed. It is used in various situations such as: - New app development: Creating database schemas for new projects. - Reviewing existing database structures: Visualizing and improving existing DB designs. - Team collaboration: Sharing database designs among team members for efficient collaboration. - Client presentations: Proposing and explaining database designs to clients visually. - Learning: Helping new engineers get familiar with database design. - Quick prototyping: Quickly creating schemas for short-term projects. Please try it out whenever you need to design a database schema. [Features] - Intuitive operability Ease of use is the most important factor. It runs smoothly, and you can intuitively edit your maps. - Automatic SQL Conversion Automatically convert ER diagrams into SQL code. Supported databases include MySQL, PostgreSQL, Oracle, and SQLite. - Ready to use You can use it immediately without registering an account. - Multi-device support It supports cloud storage integration, allowing seamless editing across multiple devices. - Export and Share You can export and share your ER Diagram, and even edit them on a PC. - Import Exported files can be imported and edited. - Text-based editing Edit your ER Diagram directly using Mermaid notation. - Dark theme support Since it supports a dark theme, it is also ideal for use at night.

Screenshots

Data Modeler4 screens
ER Diagram AI4 screens

Verdict

The call

The clearest difference is rating: Data Modeler at 4.4 against ER Diagram AI's 1.0. Data Modeler also leads on update cadence (every 5 days vs fortnightly) and ratings volume (5 vs 1). ER Diagram AI's advantage is iOS requirement (15.6 vs 17.6). On price, review sentiment, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Data Modeler sells 3 in-app purchases, starting at $8.49 per month and ER Diagram AI sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Data Modeler holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Data Modeler has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 55% of Data Modeler's written reviews are positive against 50% of ER Diagram AI's.

UpkeepUpdate frequency

Data Modeler ships an update every 5 days, ER Diagram AI fortnightly. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

Scorecard4 real differences · 6 level
Data Modeler versus ER Diagram AI: the parameters behind the verdict, then further details
ParameterData ModelerER Diagram AI
PriceFreeFree
Rating4.4 (5 ratings) — better1.0 (1 ratings)
Positive reviews54.5% of reviews — better50.0% of reviews
Number of ratings5 — better1
Update frequencyEvery 5 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.615.6 — better
Further details — not scored
Size23 MB70 MB
Age rating4+4+
DeveloperRahul KatariyaYUKI TANAIKE

Customer experience

Data Modeler

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews11 reviews
Positive54.5%
Neutral0.0%
Negative45.5%

ER Diagram AI

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

3 purchases

Data Modeler

Subscriptions2
  • Monthly$8.491 Month
  • Annual$59.991 Year
One-time1
  • Introductory Lifetime Offer$89.99
2 purchases

ER Diagram AI

Subscriptions2
  • Simple ER Pro Version (Monthly)$4.991 Month
  • Simple ER Pro Version (Annual)$44.991 Year

Questions

Is Data Modeler free?
Data Modeler is free to download, with in-app purchases available.
Is ER Diagram AI free?
ER Diagram AI is free to download, with in-app purchases available.
Which has better reviews, Data Modeler or ER Diagram AI?
Data Modeler is rated higher. Data Modeler averages 4.4 out of 5 from 5 ratings, while ER Diagram AI averages 1.0 from 1 ratings.
Do Data Modeler or ER Diagram AI have ads?
Neither Data Modeler nor ER Diagram AI shows ads.
Which is updated more often, Data Modeler or ER Diagram AI?
Data Modeler ships an update every 5 days, and ER Diagram AI fortnightly. Most recently, Data Modeler was updated on September 9, 2026 and ER Diagram AI on September 13, 2026.

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