Watches the web for you
Tell it once. It keeps watching.
Kestrel searches the live web, reads the pages and checks each one against what you asked for. Then it keeps looking, and tells you when something changes.
Accounts are by invitation for now.
Tell me when any EU store sells these headphones under €300.
Headphones under €300
Looked a moment ago · looks again in 10 minutes
- Under €300
- New, not refurbished
- Sold by an EU store
Changed · 09:41
The price dropped at a store in Germany
- 09:31Looked. Nothing new.
- 09:21Looked. Nothing new.
An example. The store and the prices are made up.
See it work
A short film: a question, a watch, and what happens when something changes.
Watches
How a watch works
Ask once. Kestrel does the looking from then on.
Powered by Context.dev, Oxylabs and the Gemini Decisions API
Tell it once
Say what to find and what it has to meet, in plain words. Each condition becomes a check.
- Under €300
- New, not refurbished
- Sold by an EU store
It keeps looking
On a schedule, and when a page it watches changes. Each time it reads the pages again and checks them again.
- 09:31Looked. Nothing new.
- 09:21Looked. Nothing new.
- 09:11Looked. Nothing new.
It tells you what changed
You get the before, the after and the source. When nothing changed, it stays quiet.
Changed · 09:41
The price dropped at a store in Germany
In the app and in your inbox
A change shows up as a notice in Kestrel. If you are away, it comes by email too.
- Made from any answerPress Watch this on a checked list or a price card. Or just ask for a watch.
- Yours to changePause it, edit it, delete it, or press Check now.
- Every look keptEach look is kept with what it found, so you can see what changed and when.
Something changed
Headphones under €300
Mon 16 Nov, 09:41 · The price dropped at a store in Germany
- Before
- €329
- After
- €289
- Source
- nordaudio.example
Ask
Or just ask
A one-off question works too. The answer is a card you can use, and every card shows its sources.
Powered by Context.dev and Oxylabs
Checked lists
Something quick for dinner with the chickpeas I have. Vegetarian, no nuts, one pan.
Places
Where should we eat near Kamppi tonight?
Weather
Do I need a coat in Espoo this week?
Research
Should I lease or buy an electric car in Finland? I drive about 15,000 km a year.
And more
The same thing priced in several countries. The news on a subject. And when no card fits, Kestrel builds one: a chart, a table, a timeline.
- Prices by country
- News
- Comparisons
- Timelines
- Opening hours
- Charts
- Job ads
- Recipes
- Courses
These are the app's real cards. Try them. What they show is sample data.
How it works
Each part does one job
Context.dev finds, reads and watches. Oxylabs localises and prices. Gemini judges.
Context.dev
Finds, reads and watches
Search that brings back the text of each page in the same call. The news on a subject. And monitors that call Kestrel when a watched page changes.
Oxylabs
Localises and prices
The same search as another country sees it, and shopping prices in each one. It also reads the pages that need a real browser.
Gemini
Judges
The Decisions API checks every page against every condition in one request. The answer is yes, no, or the page does not say.
Trust
You can check its work
Kestrel shows where every answer came from, and says so when it does not know.
A source on everything
Every card and every change links to the page it came from.
Now €289, was €329 nordaudio.example
It says when a page does not say
If a page does not state something, that is the answer you get. It is never filled in with a guess.
- Yes
- No
- The page does not say
Failures said plainly
A page that could not be read is listed as unread. It is not skipped in silence.
One page could not be read
And the rest
Small things that make it easy to live with.
Talk to it
Say it out loud. Kestrel answers by voice while the cards arrive on screen. Powered by Gemini 3.8 Live.
Tells you when it matters
A watch found a change, or a long chat is done. You see it in the app, and get an email only when you are away.
- Changed: headphones under €300
- Done: lease or buy an electric car
- The change is in your inbox
Pick your pace
Four modes and a dial for how hard it should think. Ultra fast is Gemini 4 Hydrogen, Fast is Claude Sonnet 5.5, Smart is Claude Opus 5.5 and Expert is Gemini 4 Carbon.
Keeps working without you
Close the tab or start something else. Your chat keeps working, and you can have several going at once.
- Lease or buy an electric car
- Quick dinners with chickpeas
- Coffee shops in Kallio
Made for teams
An admin hands out accounts, chooses which modes each person gets, and sets a spending limit.
Nothing to install. Open it in any browser, or add it to your phone's home screen.
Powered by
Context.dev
Search with the page text, the news, and the monitors behind every watch.
Oxylabs
Search and prices country by country, facts pulled from a page, and a second reader for hard pages.
Gemini
by Google
Gemini 4 Hydrogen and Gemini 4 Carbon think in the Ultra fast and Expert modes. Gemini 3.8 Live is the voice. The Gemini Decisions API does the checking.
Claude
by Anthropic
Claude Sonnet 5.5 and Claude Opus 5.5 think in the Fast and Smart modes, in chats and in research.