# IdeaFast vs NotesIQ: which to pick

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

Canonical: https://productsfarm.com/compare/ideafast-vs-notesiq
Last updated: 2026-11-07

|  | [IdeaFast](https://productsfarm.com/product/ideafast) | [NotesIQ](https://productsfarm.com/product/notesiq) |
| --- | --- | --- |
| What it is | Check your startup idea against Reddit before you build. Pay once. | Analytics and scheduling for Substack Notes, inside your browser |
| Pricing | Freemium | Paid |
| Platforms | Web | Chrome extension, Web |
| Categories | Marketing, Analytics | Analytics, Marketing, Writing and content |
| Made for | founders, indie hackers, startup builders | substack writers, newsletter creators, independent publishers |
| Built with | [Next.js](https://productsfarm.com/tech-stack/nextjs), [React](https://productsfarm.com/tech-stack/react), [Vercel](https://productsfarm.com/tech-stack/vercel), [Google Analytics](https://productsfarm.com/tech-stack/google-analytics), [Tailwind CSS](https://productsfarm.com/tech-stack/tailwind-css) | [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 | 0 |
| Website | [ideafast.pro](https://www.ideafast.pro/) | [notesiq.app](https://www.notesiq.app/) |

## About IdeaFast

IdeaFast (ideafast.pro) checks the problem behind a startup idea against Reddit: it finds what people keep complaining about, scores each problem 0 to 100 and links every one to its threads.

Pick the subreddits where your customers talk, and a scan groups their posts into recurring problems with real quotes, so you read what people wrote in their own words, not a summary. You can also paste a written idea and get an evidence report with a verdict, or turn a problem into startup ideas.

Pay once, no subscription. Scans never expire, and your first scan is free with no card. A free library of scored problems needs no account: https://www.ideafast.pro/explore

Made for founders and indie builders before they build: testing one idea, or choosing what to build in a niche.

Prices: https://www.ideafast.pro/pricing

## 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

- [IdeaFast](https://productsfarm.com/product/ideafast)
- [NotesIQ](https://productsfarm.com/product/notesiq)
- [More comparisons](https://productsfarm.com/compare)