IdonisIdonisThis is a translation provided for convenience. In case of any discrepancy, the French version prevails.
Version 3 — last updated: 5 October 2026
This page describes what Idonis (a service published by Vanbe SRL) stores on or reads from your device — cookies, browser local storage and equivalent techniques —, for what purpose and for how long. It supplements the Privacy Policy.
A cookie is a small file that a website stores in your browser. Local storage (localStorage) and session storage (sessionStorage) are comparable mechanisms. The rule applies to any technique that stores information on your device or reads information from it (Article 5(3) of Directive 2002/58/EC on privacy and electronic communications (“ePrivacy Directive”), transposed into Belgian law by Article 10/2 of the Act of 30 July 2018): such operations require your consent, except where they are strictly necessary for the transmission of a communication or for the provision of a service you have explicitly requested.
The pages of the public website — home page, public company profiles, guides, FAQ, legal information — do not set any cookie and do not write anything to your browser's storage. They are served directly by our servers, without third-party scripts.
| Name | Purpose | Duration | Characteristics |
|---|---|---|---|
fr_auth | Authentication session: keeping you signed in to your account. Contains a signed token, not your password. Deleted when you sign out. | 30 days at most | Idonis, app.idonis.ai only · inaccessible to scripts (HttpOnly) · sent over HTTPS only (Secure) · SameSite=Lax |
lang | Display language (French, Dutch, English or German), so that our servers translate the labels into your language. | 12 months | Idonis, app.idonis.ai only · SameSite=Lax |
The application keeps a few preferences and interface states in your browser. This information stays on your device: it is not transmitted to our servers or to any third party.
| Item | Purpose | Duration |
|---|---|---|
lang | Chosen language. | Until you clear the site data in your browser |
fr_intro, fr_onboard, fr_score_tip,
fr_list_hint, fr_presets |
No longer displaying a welcome message, a help item or a suggestion that you have already seen or closed. | |
fr_filters_open, fr_list_sel |
Remembering the state of the explorer (filters open or closed) and the last list selected. | |
fr_next, org_join |
Taking you back, after signing in, to the page requested or to the team invitation you opened. Deleted as soon as they have been used. | |
idonis.trial (session storage) |
Remembering that you requested the Pro plan trial, while your account is being created. | Closing of the tab |
The API documentation page (/developers.html) uses a documentation component
that may keep your display settings (for example light or dark mode) in local storage.
These cookies and storage items are necessary for the service you request (accessing your account, displaying the application in your language, finding the interface as you left it). They are used neither for advertising, nor for audience measurement, nor to track you on other sites.
To find out which pages are viewed and where visitors come from, Idonis uses Plausible Community Edition, free and open-source audience measurement software that Vanbe installs and operates itself, on its own servers located in the European Union. No data are transmitted to the publisher of this software or to any other third party. Measurement covers the pages of the public website and certain steps and actions on the website and in the application (for example: sign-up request, account creation, start of a trial, payment, viewing a company profile, search, question to the chat), counted without any data from your account. It is performed by our servers, at the moment they process the page or the action you request: no measurement script runs in your browser.
utm_…), the type of browser, operating system and device (inferred from the header that every
browser sends) and the country or region (inferred from the IP address). For an action: its name, the
section of the application where it takes place (never the full address of the page) and, depending on the action, a
generic label (plan chosen, amount of the plan at the public price, language, arrival channel); never
your name, your e-mail address, what you type, or the company or person viewed.To find out which channels (search engine, article, partner, campaign) bring users, Idonis records, only if you create an account, the following information about the visit that led you there:
utm_source,
utm_medium, utm_campaign, utm_content, utm_term);How this information travels: it is passed in the address of the links leading from the public website to the application, then attached to your sign-up request. No cookie or browser storage is used for this. The unique click identifiers that some advertising networks add to advertising links are not kept.
What we do with it: measuring, on an overall basis, how many sign-ups, trials and subscriptions come from each channel. This information is neither sold nor passed on to third parties.
Retention: if the sign-up is not completed, this information is deleted together with the sign-up request. Once attached to an account, it is kept for 25 months at most from the creation of the account, then deleted; it is also deleted together with the account. Legal basis and right to object: see the Privacy Policy (§ 2 g).
Some views of the application display maps: the base map of the explorer and of the map of a company profile's establishments is provided by CARTO, the address map of a company profile by OpenStreetMap. To display these maps, your browser contacts their servers directly, and they receive your IP address; as at the date of the last update of this page, they do not set any cookie when displaying them. Links to other sites (Belgian Official Gazette, National Bank, enterprise register…) do not trigger any transmission until you click; those sites then apply their own policy.
Idonis does not use any advertising tracker on its public website or in the application. Should Idonis one day use such trackers, it would do so only on identified campaign pages, after having obtained your consent on those pages, and after prior update of this policy. Refusing would not prevent access to the website.
You can delete cookies and site data at any time in your browser's
settings. Deleting the fr_auth cookie signs you out; deleting local storage resets
your display preferences. Question or request: dpo@idonis.ai.
This policy is dated and numbered; any change gives rise to a new version. Earlier versions are kept and provided on request.