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The native Windows AI overlay

Freeze anything on screen.
Ask. Keep it as research.

Hit a hotkey to freeze your whole screen — even a moving video, a game, a popup that vanishes — drag a box over any region, and get an instant answer. Every answer becomes a research note with its source, saved, searchable, and exported as a memo.

Works where a browser tab or a live screen-share can't — over any app, on any Windows PC.

Download for Windows See sample notes

No full-screen recording. Frostle only analyzes what you select.

Free · runs on your own API key · Windows 10 & 11

Unsigned build — on the SmartScreen prompt click More info → Run anyway

Why not just use ChatGPT?

An answer box
forgets. Frostle
remembers.

Pasting a screenshot into a chatbot gives you an answer you'll lose by tomorrow. Frostle is faster at capture, keeps the source and timestamp, and files every insight into projects you can search and export. It's not an answer box — it's your screen-to-research memory.

  • Freeze-frame capture

    One hotkey freezes the whole screen — even a moving video or a popup that vanishes — so you can select the exact chart, table or stat that matters.

  • Source-linked clips

    Every clip keeps its screenshot, the page or video URL, and the exact YouTube timestamp — so you can always trace a claim back to where it came from.

  • Projects & export

    File clips into projects, tag and search them, then export a whole project as a clean Markdown memo for Notion, Obsidian or Docs. Everything stays local on your machine.

612 × 380 · frozen
Frame held · ready to ask Ctrl ⇧ B
Built for real research

Every kind
of source,
one workflow

Videos, dashboards, courses, reports, competitor sites — if it's on your screen, Frostle turns the part that matters into a saved, source-linked research note.

Six research actions — Summarize, Explain chart, Extract table, Analyze implications, Research note, and Ask — plus live web research.

YouTube research

Save the exact moment — screenshot, transcript context and AI analysis, linked back to the timestamp.

Charts & dashboards

Extract numbers, explain trends, and turn visible data into clean tables you can reuse.

Courses & webinars

Turn slides and explanations into clean notes and follow-up questions you'll actually revisit.

Reports & PDFs

Capture the part that matters and file it straight into your research library.

Competitive research

Collect product claims, pricing screenshots and feature notes into one tidy project.

Content research

Turn video moments into hooks, summaries and source-linked notes for your next piece.

The workflow

From a hotkey to a research memo

  1. 01

    Press the hotkey

    Ctrl ⇧ B freezes your whole screen into a still you can work with.

  2. 02

    Select anything

    Drag over a chart, table, slide or stat — even on a moving video.

  3. 03

    Choose an action

    Summarize, explain a chart, extract a table, analyze, note, or ask.

  4. 04

    Save the clip

    Keep it with its source link & timestamp; file it into a project.

  5. 05

    Export your memo

    Turn a project into a clean Markdown memo for Notion, Obsidian or Docs.

Sample research notes

This is what you keep

Every capture becomes a structured, source-linked clip you can search, revisit and export. A few examples:

YouTube 12:34

AI coding tools — adoption is compounding

Claim: weekly active devs on AI coding assistants ~3× year over year.

Why it matters: tooling spend is shifting from seats to usage-based AI.

marketai-codinggrowth
Dashboard
PlanMRR
Pro$8.2k
Team$3.1k

Q3 revenue by plan

Insight: Pro drives ~70% of MRR; Team is the upside.

Caveat: one-time fees not separated in the source.

revenueq3
Webinar

Positioning before features

Key points: pick one ICP; sell the outcome; features prove it.

Follow-ups: Which ICP converts fastest? What's the one-line promise?

positioninggtmcourse
The honest comparison

Why not just use ChatGPT?

ChatGPT can answer a screenshot. Frostle is built for doing it a hundred times and keeping the results.

ChatGPT
Frostle
Capture
Upload screenshots by hand
One hotkey, select any region
Source & timestamp
Usually lost
Saved with every clip
Clip library
None
Searchable, timestamped
Projects & export
No workflow
Projects → Markdown memo
Built for
One-off questions
Repeated research
Free

Free. You bring the API key.

No plans, no subscription, no account. Download Frostle, paste your own Anthropic API key, and everything is unlocked. You pay Anthropic directly for what you actually use — typically a few cents a day.

$0 for Frostle

+ your own API key, billed by your provider

Download for Windows

No account · no card · no trial

  • Every action, unlimited captures
  • Research clips, projects & tags
  • Markdown export — all stored locally
  • Your key stays in the Windows Credential Manager

Don't have a key? Create one at console.anthropic.com — it takes a minute. Voice input and YouTube transcripts use their own optional keys, both with free tiers.

Private by design

Your research stays yours

  • No continuous recording. Frostle only acts when you press the hotkey, and only analyzes the region you select.

  • Local-first. Clips, projects and history live in a database on your PC — not our servers.

  • You're in control. Delete any clip or project anytime. Bring your own AI keys if you prefer no middleman.

  • Keys stay in your OS keychain. API keys are stored in the Windows Credential Manager, never in a plain file. Privacy policy.

FAQ

Good questions

How is Frostle different from screenshotting into ChatGPT?

Frostle is built around workflow: hotkey capture, source links, timestamps, saved research clips, projects and export. ChatGPT can answer a screenshot; Frostle helps you build a reusable research library you can search and turn into a memo.

Does Frostle record my screen?

No. Frostle does nothing in the background. Only when you press the hotkey does it take a single still of your screen so you can select a region — it never records, streams or continuously watches your screen.

Are my clips and data local?

Yes. Your clips, projects and history live in a local database on your PC. If you bring your own API keys, they're stored in the Windows Credential Manager — never in a plain file. Only the region you select is sent to the AI provider to generate the answer.

Does the YouTube transcript always work?

Transcript support depends on availability — not every video has captions. Frostle still works with the screenshot and your selected visual context, and saves the source link and timestamp either way.

Can I export to Notion or Obsidian?

Yes. A single clip or a whole project exports as clean Markdown — paste it straight into Notion, Obsidian, Google Docs, or any editor. Source links and timestamps come along.

Do I need an account?

No. There is no sign-up and no billing — Frostle runs on your own API key. Paste it once on first launch and you're done. The key lives only in the Windows Credential Manager and is used to call your AI provider directly; your clips and history never leave your machine.

Is there a Mac version?

Frostle is Windows-native today (Windows 10 & 11), built to feel right on Windows first. A Mac version is on the roadmap and will follow based on demand.

Start your library

Capture insights.
Keep them forever.

Install Frostle and turn your first video, chart or report into a saved research note in under a minute.

Download for Windows

Free to start · Windows 10 & 11 · unsigned — SmartScreen: More info → Run anyway