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NoteGPT vs Signal Extractor: free without the credit counting
NoteGPT is a study tool that turns videos, PDFs and slides into summaries, mind maps and flashcards, on a monthly quota system.
The short answer
If you're a student who needs mind maps, flashcards and PDFs handled in the same place, NoteGPT genuinely does more than we do. For summarizing YouTube videos, it's a worse deal. The free plan gives you about 15 quotas a month and every AI action spends them — summaries, chat messages, transcriptions, mind maps all draw from the same pot — so a single evening of research empties it. Free videos are capped at around two hours, one at a time, and past that you're into a paid plan that splits your allowance across quotas and premium credits in a way that takes a spreadsheet to follow. Signal Extractor has one plan: free. No monthly quota, no per-action accounting, no card, no account. Paste a link and get a one-line verdict plus timestamped takeaways in about ten seconds, on a video of any length, as many times as you like. Ask follow-up questions without spending anything, and follow a channel to get every new upload summarized in your inbox.
Feature by feature
17
Signal Extractor wins
7
Tied
4
NoteGPT wins
| Price & limits | Signal Extractor | NoteGPT |
|---|---|---|
| Price to summarize | Free | Quota, then paid |
| Summaries on the free plan | No limit | ~15 credits/month |
| Credits or quotas to track | None | Yes |
| Chat costs you credits | No | Yes |
| Video length on the free plan | Any length | ~2 hours |
| No account needed | Yes | No |
| No subscription | Yes | No |
| Videos at once | 1 | 1 free, more paid |
| The summary | Signal Extractor | NoteGPT |
| Timestamped key takeaways | Yes | Yes |
| Clickable timestamps | Yes | Yes |
| One-line verdict up top | Yes | No |
| Streams as it is written | Yes | Limited |
| Instant or deeper reasoning | Yes | No |
| AI model used | Gemini 2.5 Flash | Varies by plan |
| Videos with no captions | Yes | Yes |
| Mind maps | No | Yes |
| Flashcards and quizzes | No | Yes |
| PDFs, slides and documents | No | Yes |
| After the summary | Signal Extractor | NoteGPT |
| Follow-up chat on the video | Yes | Limited |
| Chat can search the web | Yes | No |
| Channel follow + email digest | Yes | Limited |
| X (Twitter) posts too | Yes | No |
| Save to Notion | Yes | No |
| Public share link | Yes | Yes |
| Copy as markdown | Yes | Yes |
| Saved history | Yes | Yes |
| Chrome extension | Yes | Yes |
| Public summary library | Yes | No |
NoteGPT details taken from their own site and public documentation, checked August 2026. Their features and limits change — check theirs for today's details. Logos and product names are trademarks of their respective owners, shown here to identify the products compared.
Which should you use?
Use Signal Extractor if
You mainly summarize YouTube videos and you don't want to think about credits, quotas or a monthly cap ever again.
Use NoteGPT if
You're studying and want one tool for lecture videos, PDFs and slides, with mind maps and flashcards generated from them — and you're willing to pay for the volume.
NoteGPT questions
Is NoteGPT free?
There's a free plan, but it runs on a monthly quota of roughly 15 credits that every AI action spends — summaries, chat, transcription, mind maps. That's about 15 video summaries a month if you do nothing else, which most people burn through in a single research session.
What is the best free NoteGPT alternative for YouTube?
Signal Extractor, if YouTube is your main use case. It's free with no credits, no monthly quota and no account, and there's no length tier — a three-hour podcast costs the same as a ten-minute explainer.
How much does NoteGPT cost?
Paid plans start around $9.99 a month and rise steeply from there, with each tier raising your quota allowance and premium credit balance. Check their pricing page for current numbers. Signal Extractor has no paid tier.
Does NoteGPT limit video length?
On the free plan, yes — around two hours per video, one at a time. Longer videos and batch processing are paid features. There's no length tier here.
Does Signal Extractor make mind maps or flashcards?
No. If you want mind maps, flashcards or quizzes generated from a video, NoteGPT is the better tool and we'd tell you to use it. We do one thing: the fastest accurate read of what a video actually says.
Can Signal Extractor summarize PDFs?
No — YouTube videos and X posts only. NoteGPT handles PDFs, slides and uploaded files, so for mixed-format study workflows it's the broader tool.
Do follow-up questions cost anything here?
No. The chat under every summary is free and unmetered, with the full transcript in context, and it can check the web when the answer isn't in the video. You don't need an account for it either.
Try it on the video you were about to watch
Paste a YouTube link and read the takeaways in about ten seconds. No account, no extension, no card.
Summarize a video