Comparison

JSON Data Generator vs Data Modeler

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

Head to head
About

JSON Data Generator

Features
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JSON Data Generator is a handy tool for creating realistic JSON objects for testing your applications. You can choose from a variety of field types, such as: - Integer: Generate random integers within a specified range - Double: Generate random decimal numbers within a specified range - Month name: Generate random month names in long or short format - Weekday name: Generate random weekday names in long or short format - Bool: Generate random boolean values (true or false) - GUID: Generate random globally unique identifiers (GUIDs) - Date range: Generate random dates within a specified range, in short or Posix format - First and Last names: Generate random names from a list of common first and last names - Email: Generate random email addresses from a list of common domains - Color: Generate random color names from a list of common colors - Lorem Ipsum text: Generate random text from the classic Lorem Ipsum filler text You can customize the number of objects, the number of fields per object, and the field names. You can also save your settings and load them later. The generated JSON objects can be copied to the clipboard or exported to a file. JSON Data Generator is a simple and useful tool for developers who need to generate mock data for testing their applications.

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

Screenshots

Data Modeler4 screens

Verdict

The call

The clearest difference is price: Data Modeler at Free against JSON Data Generator's $0.99. Data Modeler also leads on update cadence (every 5 days vs every 37 months). JSON Data Generator's advantage is in-app purchases (none vs 3) and iOS requirement (15.6 vs 17.6). On ads and device support 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

Data Modeler is free to download; JSON Data Generator costs $0.99 up front. Data Modeler sells 3 in-app purchases, starting at $8.49 per month. JSON Data Generator asks for nothing beyond the download.

UpkeepUpdate frequency

JSON Data Generator ships an update every 37 months, Data Modeler every 5 days. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
JSON Data Generator versus Data Modeler: the parameters behind the verdict, then further details
ParameterJSON Data GeneratorData Modeler
Price$0.99Free — better
Rating—4.4 (5 ratings) — better
Positive reviews—54.5% of reviews
Number of ratings—5 — better
Update frequencyEvery 37 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPad, MaciPhone, iPad, Mac — better
Requires iOS15.6 — better17.6
Further details — not scored
Size1 MB23 MB
Age rating4+4+
DeveloperKonstantin AdamovRahul Katariya

In-app purchases

None

JSON Data Generator

No in-app purchases

3 purchases

Data Modeler

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

Questions

Is JSON Data Generator free?
JSON Data Generator costs $0.99, with no in-app purchases.
Is Data Modeler free?
Data Modeler is free to download, with in-app purchases available.
Do JSON Data Generator or Data Modeler have ads?
Neither JSON Data Generator nor Data Modeler shows ads.
Which is updated more often, JSON Data Generator or Data Modeler?
JSON Data Generator ships an update every 37 months, and Data Modeler every 5 days. Most recently, JSON Data Generator was updated on October 25, 2026 and Data Modeler on October 11, 2026.

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