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Csv Easy
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Clean Spreadsheets
Clean, transform and prepare CSV & Excel files in seconds.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | app.factsprep.com | diffyn.com |
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| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


FactsPrep CSV Cleaner is a simple, practical tool for cleaning and preparing CSV and Excel files before analysis, reporting, or importing data into other systems. Clean messy datasets with common data-cleaning operations such as removing duplicates, handling missing values, standardizing data,...
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What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing FactsPrep CSV Cleaner and Diffyn.
FactsPrep CSV Cleaner's answer
FactsPrep CSV Cleaner focuses on making everyday CSV and Excel data preparation simple and practical. Users can clean, transform, filter and organize their data through a straightforward browser-based workflow without complicated setup.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
FactsPrep CSV Cleaner's answer
FactsPrep CSV Cleaner is designed for users who want to prepare CSV and Excel files quickly without the complexity of larger data platforms. It provides practical data cleaning and transformation tools in a simple, easy-to-use workflow.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
FactsPrep CSV Cleaner's answer
Python, Streamlit, Pandas, FastAPI, Supabase, Lemon Squeezy, Resend, Cloudflare, Railway
Diffyn's answer:
React, Next.js, POSTGRESQL
FactsPrep CSV Cleaner's answer
HR, recruiters, sales and marketing teams, business users, and anyone who regularly works with CSV or Excel files and needs to clean, organize or transform data before using it elsewhere.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
FactsPrep CSV Cleaner's answer
FactsPrep CSV Cleaner was originally built as an internal tool to solve real-world data preparation needs in a recruitment environment. It was used locally for over a year to clean, transform, and prepare CSV and Excel data as part of everyday workflows. After seeing how useful it was in practice, the idea grew to make the tool publicly available so that other teams and professionals could benefit from the same simple approach to data preparation.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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