Straight to the point
Every tool has its own address and its form right there. Nothing to install, nothing to sign up for.
Tools that ask nothing of you.
No account, no e-mail, no cookie banner to dismiss before you can work. Open a tool, use it, close the tab.
How it works
One tool, one page, one answer
Tool families
Eight families, a page each
A tool belongs to as many families as it answers questions for, and each family has a page of its own.
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Astronomy tools
Moon phases, Milky Way nights, equinoxes and solstices, planet retrogrades, Sun and Moon alignments — worked out for the place you name.
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Astrology calculators
Birth chart, transits, synastry, solar return, retrogrades. The same sky, read the other way round.
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Photography calculators
Golden hour, hyperfocal distance, ND filter exposure, the NPF rule, star trails, timelapse intervals.
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Place and map tools
Coordinates for any city, the local time there, the colour of the sky right now, and which side of the train to sit on.
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Time and date tools
What time it is somewhere else, how many days since a date, how many until one, when the season turns.
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QR code generators
Plain codes, Wi-Fi joining codes, vCard contact codes, SEPA payment codes. Drawn on the server, sent straight back.
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Card makers
Quote cards, countdowns, day counters, bingo grids, LinkedIn carousels, and a landing page written in Markdown.
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Security tools
Passwords and passphrases, a two-factor authenticator that keeps no account, and Wi-Fi codes that hand out a key without saying it aloud.
Beyond the answer
An answer you can take away
Most of these tools do not stop at putting a number on the page.
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Put it in your calendar
A tool that answers in dates hands you an .ics file — or a webcal: address your calendar re-reads by itself, recomputing every day.
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Open it in a spreadsheet
A month of golden hours, a year of retrogrades, a batch of checks: take the CSV and sort it yourself.
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Print it
The code generators and the form editors lay an answer out as a PDF — a sheet of labels, a payment slip, a finished record.
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Embed it in your own page
Moon phase, golden hour, sky colour and countdown each draw a live image. Point an <img> at its address and it redraws itself, every day, with no script of ours on your page.
How addresses work here
A link that reopens what you saw — unless it never should
When a tool's question is a public choice — a city, a month, a focal length — the address under the answer carries it. Copy that link and it reopens exactly what you were looking at, on your phone or in somebody else's browser.
When the question is yours — a birth time, a password, an IBAN, a Wi-Fi key — nothing you typed ever reaches an address. The form sends it in the body of one request, the answer comes straight back, and the address stays bare. Each tool settles which of the two it is in its own code; there is no setting here to get wrong, and none to forget.
The rule runs the other way too. A tool declares the fields it will accept from a link, and a parameter it never declared cannot reach its form at all.
Editorial policy
How a tool earns its place here
What gets built here, what deliberately does not, and how the site pays for itself.
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What gets built?
A tool is built only when the computation needs something a browser on its own does not have. Sun, Moon and planet positions come from NASA's JPL DE440 ephemerides through the Orekit library. Every box that asks for a city, a station or a summit resolves it against a copy of the GeoNames database held on our own server, so nothing you type is sent to anyone to look it up.
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What does not get built?
Anything a search engine already answers in its own result box, and anything a single page of JavaScript could do on its own. Both already exist a hundred times over, and a hundred-and-first copy helps nobody. What is left are the questions that take several inputs no answer box can guess — a place and a date and a lens.
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Why is there no account?
Because not one of these tools needs one. Nothing you type is stored, so there is nothing to sign in to, nothing to export and nothing to ask us to delete. Before you choose anything, the site sets a single cookie, which protects the forms against cross-site request forgery and follows you nowhere.
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Who pays for it?
Advertising does, and it stays switched off until you consent to it. Audience measurement works the same way: denied by default, and it never receives a name or an e-mail address, because the site never asks for either.
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Where does the data come from?
GeoNames for places, JPL and Orekit for the sky, IANA for time zones, Font Awesome for the icons — each under its own open licence. The data and credits page names all of them, with the licence each one is used under.