# Data Utility vs NotesIQ: which to pick

> Data Utility vs NotesIQ: pricing, platforms, launches, upvotes and founders side by side on ProductsFarm, with notes on which to pick.

Canonical: https://productsfarm.com/compare/data-utility-vs-notesiq
Last updated: 2026-11-13

|  | [Data Utility](https://productsfarm.com/product/data-utility) | [NotesIQ](https://productsfarm.com/product/notesiq) |
| --- | --- | --- |
| What it is | Free browser tools to convert, clean, mask and compare CSV, JSON and Excel files | Analytics and scheduling for Substack Notes, inside your browser |
| Pricing | Free | Paid |
| Platforms | API, Web | Chrome extension, Web |
| Categories | Developer tools, Productivity, Analytics | Analytics, Marketing, Writing and content |
| Made for | data analysts, data engineers, spreadsheet users | substack writers, newsletter creators, independent publishers |
| Built with | [React](https://productsfarm.com/tech-stack/react), [TypeScript](https://productsfarm.com/tech-stack/typescript), [Vercel](https://productsfarm.com/tech-stack/vercel) | [Next.js](https://productsfarm.com/tech-stack/nextjs), [React](https://productsfarm.com/tech-stack/react), [Vercel](https://productsfarm.com/tech-stack/vercel), [Dodo Payments](https://productsfarm.com/tech-stack/dodo-payments), [Google Analytics](https://productsfarm.com/tech-stack/google-analytics), [Tailwind CSS](https://productsfarm.com/tech-stack/tailwind-css) |
| Upvotes | 0 | 25 |
| Website | [datautility.in](https://datautility.in/) | [notesiq.app](https://www.notesiq.app/) |

## About Data Utility

Data Utility is a set of 22 free online data tools that run entirely in the browser. You can convert files between JSON, CSV, Parquet and Excel, merge or split files, turn pasted text or an API response into a table, and edit nested JSON as a table. Other tools format and validate JSON, CSV, XML and YAML, compress files with gzip, create SQL scripts, and generate test data from a CREATE TABLE statement. A Data Transformation tool joins, trims and reshapes files, while profiling and comparison tools examine datasets. A masking tool removes personal data before a file is shared, and Data Lineage records each change made to a file.

The site also includes a Cloud Storage Cost Calculator that compares Amazon S3 and Azure Blob Storage costs for a given data size and access pattern, based on the providers' published list prices. Recent files keeps finished results in the browser so they can be reused in another tool, up to 10 files of 100,000 rows each. Three AI tools let users chat with their data through their own Google Gemini API key, and those tools send only a summary of the data, never the full file.

The tools are aimed at people who work with data files and want a quick way to handle them without installing software or creating an account. Files are read and processed on the user's device and are not uploaded to a server, although the site uses analytics to count tool usage.

## About NotesIQ

NotesIQ is a Chrome extension for Substack writers who want to understand how their Substack Notes perform. It reads your Notes through your existing Substack session and shows them in a dashboard ranked by engagement, with likes, restacks, comments and content type tracked for each Note. A Viral Alert flags a Note that takes off compared with your own baseline, and the tool keeps a longer history than Substack's own dashboard, which the site says shows only the last 90 days.

The extension also helps with timing and posting. A 7-day by 6-time-slot Best Time heatmap is built from your own posting history, alongside your current posting streak. You can compose a single Note or load a week of Notes into a queue, and NotesIQ uses Substack's own scheduler to publish them at the times you set. A Media Kit feature turns your subscriber count, top Notes and engagement into a one-page sponsor summary that can be exported from the panel.

NotesIQ is aimed at Substack creators who post Notes regularly and want to decide what to write and when based on their own numbers. The site says your Notes, profile and subscriber stats stay in your browser's storage, with no NotesIQ server receiving them, and that the product is a one-time $4.99 lifetime purchase with no subscription.

## Related

- [Data Utility](https://productsfarm.com/product/data-utility)
- [NotesIQ](https://productsfarm.com/product/notesiq)
- [More comparisons](https://productsfarm.com/compare)