Software Alternatives, Accelerators & Startups

SimpleX VS Fillr.app

Compare SimpleX VS Fillr.app and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

SimpleX logo SimpleX

Handle text data with a no-code console that can read natural language. Never again with a spreadsheet.

Fillr.app logo Fillr.app

Form Filler & Test Data Manager: AutoFill With Data You Control
  • SimpleX Landing page
    Landing page //
    2023-08-21
  • Fillr.app Capture Once, Fill Forever
    Capture Once, Fill Forever //
    2026-06-26
  • Fillr.app You Decide Every Field
    You Decide Every Field //
    2026-06-26
  • Fillr.app Fill From Your Own Data
    Fill From Your Own Data //
    2026-06-26
  • Fillr.app Speaks +60 Languages
    Speaks +60 Languages //
    2026-06-26
  • Fillr.app Fill Forms With One Click
    Fill Forms With One Click //
    2026-06-26

Fillr is a form filler and test data manager for Chrome โ€” for when it matters what goes into every field. Save any form as a preset with a rule per field, fill it from your own CSV or Excel rows, and manage all your test data in one place. Realistic generated data (110+ types, 60+ languages) is built in โ€” but you decide where it goes.

Anyone can spray random values into a page. Fillr is for when the data has to be right.

๏ฟฝ EVERY FIELD, YOUR RULES โœ“ Capture any form once and save it as a reusable preset โœ“ Set a rule per field: Generate, Fixed value, Blank, Skip, or Dataset column โœ“ Presets auto-match pages by URL pattern โ€” the right preset surfaces the moment you land on the page (with a picker when several match) โœ“ Preview the fill before you run it โœ“ Unlimited presets, free

๏ฟฝ FILL FORMS FROM YOUR OWN DATA (Pro) โœ“ Link a dataset to a preset, map columns to fields, and fill row by row โ€” sequential with a "row 3 of 20" readout, or random โœ“ Run 50 test cases through the same checkout without typing a single value โœ“ Your edge cases, your real records, your regression rows โ€” not random noise

๏ฟฝ๏ธ A REAL TEST DATA MANAGER โœ“ Import CSV, Excel or JSON โ€” or generate sheets of realistic dummy data โœ“ Edit rows in a spreadsheet grid, organize with tags โœ“ Export any dataset to CSV, Excel or JSON

โšก INSTANT FILL, WHEN YOU JUST NEED VALUES One click auto-fills every field with realistic fake data โ€” names, emails, addresses, phones, dates and more. Zero setup, works on any site, one-click Clear when you're done.

๏ฟฝ 60+ LANGUAGES (Pro โ€” English is free) Generate locale-accurate names, addresses and phone numbers in French, German, Japanese, Arabic and dozens more for international testing.

๏ฟฝ๏ธ POINT-AND-CLICK, 100% NO-CODE A side panel plus a draggable floating bar on the page. Fill, clear, capture, switch presets โ€” no scripts, no selectors, no JSON to edit.

SimpleX

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

Fillr.app

Website
fillr.app
$ Details
freemium $9.99 / Monthly
Platforms
Web (Dashboard) Chrome
Release Date
2026 June

SimpleX features and specs

  • Simple and intuitive interface
    SimpleX provides a clean, straightforward interface for decision-making that doesn't overwhelm users with unnecessary complexity, making it accessible to people without technical expertise.
  • Structured decision framework
    The tool helps users organize their thinking by providing a structured approach to evaluating options against multiple criteria, reducing the likelihood of overlooking important factors.
  • Free to use
    SimpleX appears to be a free web-based tool, making it accessible to anyone who needs help making decisions without requiring a financial commitment.
  • Web-based accessibility
    As a browser-based application, SimpleX requires no software installation and can be accessed from any device with an internet connection, making it convenient for quick decision-making on the go.
  • Visual comparison of options
    The tool provides a visual representation of how different options compare against each other across various criteria, making it easier to see which option comes out ahead overall.

Possible disadvantages of SimpleX

  • Limited advanced features
    SimpleX focuses on simplicity, which means it may lack more sophisticated decision analysis features such as sensitivity analysis, probability weighting, or Monte Carlo simulations that more advanced tools offer.
  • Low visibility and community
    SimpleX is a relatively niche tool with a small user base, which means limited community support, fewer tutorials, and less peer feedback compared to more established decision-making platforms.
  • Potential oversimplification
    For complex decisions involving many interdependent variables, the simplified framework may not adequately capture nuances, dependencies, or non-linear relationships between criteria.
  • Limited collaboration features
    The tool may lack robust collaboration capabilities for team-based decision-making, such as real-time co-editing, role-based access, or voting mechanisms for group consensus.
  • No offline functionality
    Being a web-based tool, SimpleX requires an internet connection to function, which can be a limitation in situations where connectivity is unreliable or unavailable.

Fillr.app features and specs

  • Presets
    Capture any web form as a reusable preset โ€” refill in one click
  • Filling Rules
    Per-field fill rules: generated data, fixed value, your own data, or skip
  • Datasets
    Datasets module: build, generate, or import rows of test data
  • Your Data
    Fill forms with your own imported data, not just fake values
  • Bulk Data Generation
    Use presets schema to generate bulk of data
  • 60+ locales
    60+ locales for realistic, region-specific test data

Category Popularity

0-100% (relative to SimpleX and Fillr.app)
Data Management
100 100%
0% 0
Testing
0 0%
100% 100
Natural Language Processing
Web Forms
0 0%
100% 100

Questions & Answers

As answered by people managing SimpleX and Fillr.app.

What makes your product unique?

Fillr.app's answer:

It leads with control, not random fill. Capture any web form as a reusable preset, set per-field rules (generated, fixed, your own data, or skip), and refill in one click โ€” plus a built-in Datasets module to build, generate, and export test data. A form-filler and test-data manager in one, no code.

Why should a person choose your product over its competitors?

Fillr.app's answer:

Fake Filler only sprays random data; Mockaroo generates data but can't fill forms. Fillr does both โ€” and lets you fill with your own data, with reusable presets, per-field control, and 60+ locales. No scripts.

How would you describe the primary audience of your product?

Fillr.app's answer:

QA engineers and developers who repeatedly test web forms and need realistic, controllable test data. Demo and sales engineers are a natural secondary audience.

Which are the primary technologies used for building your product?

Fillr.app's answer:

Next.js 15, React 19, and TypeScript dashboard; a Manifest V3 Chrome extension built with Vite and supabase for backend

User comments

Share your experience with using SimpleX and Fillr.app. For example, how are they different and which one is better?
Log in or Post with

What are some alternatives?

When comparing SimpleX and Fillr.app, you can also consider the following products