Terms of Sale
Last updated : 19 September 2026
1. Purpose and scope
These terms of sale (the “Terms”) govern subscription to and use of the Kast service, available at kastapp.xyz, together with its companion browser extension.
They apply to every subscription, to the exclusion of any other document. Creating an account and ticking the acceptance box during sign-up constitutes full acceptance of the Terms in force on that date.
The Terms apply both to business users and to consumers within the meaning of the French Consumer Code. Provisions reserved for consumers are identified as such; they do not apply to subscriptions entered into for business purposes.
2. Seller identification
The service is sold by:
- Operator: Mehdi Amrani, sole trader (Entrepreneur Individuel)
- Trade name: Scalify
- Registered address: 4 allée de la Fresnerie, 78330 Fontenay-le-Fleury, France
- SIRET number: 888 856 473 00028
- Contact: book a meeting at https://cal.com/scalify-dc7swu/meet-the-team-kast, or write to the registered address stated above
3. Description of the service
Kast is an online software product that supports publishing and prospecting on professional social networks, currently LinkedIn and X. It allows users to draft and assess posts with the help of artificial intelligence, to schedule them, to track their statistics and, depending on the plan, to collect and qualify contacts from public activity on those platforms.
Some features require installing a browser extension, described in article 11. The service is provided as it stands on the date of subscription.
Features presented on the site as upcoming, in beta or unavailable are not part of the service sold and cannot ground any claim.
4. User account
Subscription requires the creation of an account. The user warrants the accuracy of the information provided and undertakes to keep it up to date.
Credentials are personal and confidential. The user is responsible for any use made from their account and must inform the seller without delay of any unauthorised use they become aware of.
One account corresponds to one user. Sharing credentials between several people is not permitted; plans providing several workspaces or client accounts are described on the pricing page.
5. Plans, prices and taxes
The service is offered on a subscription basis, according to the plans, prices and usage limits set out on the pricing page of the site on the date of subscription. That page prevails; these Terms do not reproduce the grid, so that the two cannot diverge.
The usage limits attached to each plan (number of connected platforms, volume of AI-assisted posts, volume of collected contacts) are contractual limits. Exceeding them may result in suspension of the relevant feature until the next period, or in an upgrade to a higher plan.
Prices are stated in euros, inclusive of all taxes. The applicable price is the one displayed at the time of subscription. The seller may change its prices at any time for the future; any change affecting an ongoing subscription is notified to the user at least thirty days before it takes effect, the user remaining free to terminate under article 8.
The seller benefits from the French small-business VAT exemption: VAT not applicable, article 293 B of the French General Tax Code. The displayed price is therefore both the amount paid and the net amount. Should the seller lose the benefit of that exemption, the tax would become chargeable and would be itemised on the invoice, without changing the price displayed during an ongoing subscription.
6. Trial period
The service is offered with a trial period whose duration is stated on the pricing page and recalled during sign-up. A valid means of payment is requested at sign-up; no charge is made before the end of the trial period.
The trial period is granted once per account. A user who has already benefited from a trial, under any plan, is charged from the moment of subscription.
The user may terminate at any time during the trial period under article 8. Termination before the end of the trial results in no charge whatsoever.
Failing termination before the end of the trial, the subscription continues automatically and the first charge is made on the first day following the end of the trial.
7. Payment
Payment is made by bank card through the payment provider SquidLane. The seller has no access to any card data: such data is collected and held by the provider, on its own systems.
The subscription is charged in advance, at each billing date, for the period ahead. An invoice is made available to the user for each billing period.
Should a charge fail, the seller may suspend access to the service after informing the user and after a reasonable period allowing them to remedy the situation. Suspension does not amount to termination: data is retained under article 13.
No discount, promotional or referral code applies retroactively to a billing period already charged.
8. Term, renewal and termination
The subscription is entered into for the period stated at subscription and renews tacitly, for periods of the same length, until terminated.
The user may terminate at any time, without reason or notice, from their order page at the payment provider, reachable from the billing settings of their account. Termination takes effect at the end of the current period: access to the service is maintained until that date and no new charge is made.
Sums already paid for the current period are not refunded on a pro rata basis, save where the right of withdrawal under article 9 is exercised or where the seller has failed to perform its obligations.
The seller may terminate the subscription, after informing the user, in the event of a serious breach of these Terms, in particular of article 10. In that case, the portion of the subscription corresponding to the unused period is refunded, unless the breach has caused loss to the seller or to a third party.
In accordance with article L. 215-1 of the French Consumer Code, consumers are informed in writing, at the earliest three months and at the latest one month before the end of the period allowing rejection of renewal, of the possibility of not renewing their subscription.
9. Right of withdrawal
This article applies to consumers only.
Consumers have fourteen days from the conclusion of the contract to exercise their right of withdrawal, without having to give reasons. They exercise that right by any unambiguous statement, in particular during the contact meeting mentioned in article 2.
As the service is supplied immediately after subscription, a consumer who asks to benefit from it before the withdrawal period expires acknowledges, in accordance with articles L. 221-25 and L. 221-28 of the French Consumer Code, that they will lose their right of withdrawal once the service has been fully performed, and that in the event of withdrawal during performance they must pay the amount corresponding to the service supplied up to the communication of their decision.
In practice, the trial period under article 6 allows consumers to use the service and to give it up without any charge; that arrangement is in addition to, and not a substitute for, the right of withdrawal.
10. User obligations and use of third-party platforms
The user undertakes to use the service fairly and refrains in particular from disrupting its operation, circumventing the limits of their plan, reselling access to the service or extracting its content on a large scale.
The service interfaces with third-party platforms, in particular LinkedIn and X, of which the user remains the sole account holder. The user remains bound by the terms of use of those platforms, which may restrict automation, data collection or the use of third-party tools. It is for the user to read them and to assess whether their use complies.
The seller is neither mandated by nor affiliated with those platforms. It does not warrant the availability of their interfaces, which may change or cease to function without notice, nor the consequences those platforms may draw from the use of a third-party tool on the user's account, including restriction or suspension of that account.
Where the user collects, by means of the service, data relating to natural persons, they act as data controller for that data. It is for them to define the purpose, to have a legal basis, to inform the persons concerned and to respond to the exercise of their rights. In this respect the seller acts as a processor, under the conditions described in the privacy policy.
11. Browser extension
Some features require the installation of a browser extension provided by the seller. Installation is optional: a user who does not install it retains access to the features that do not depend on it.
The extension runs in the user's browser and acts from their authenticated session on third-party platforms. The user remains responsible for the use they make of it, under article 10.
The extension is distributed by the seller and may be subject to updates that the user must install in order to continue benefiting from the corresponding features. The seller does not warrant the compatibility of the extension with every version of every browser.
12. Availability and maintenance
The seller uses reasonable means to keep the service accessible, without warranting uninterrupted availability. No quantified service level is guaranteed outside a separate written undertaking.
The service may be interrupted for maintenance, development or security reasons. The seller endeavours to limit the duration of such interruptions and, where an interruption is planned and of significant length, to inform users in advance.
The service depends on hosting providers and third-party platforms whose unavailability is not attributable to the seller.
13. Intellectual property and content
The service, its software components, its interface, its editorial content and its trade marks remain the exclusive property of the seller. Subscription confers a personal, non-exclusive and non-transferable right of use, limited to the duration of the subscription.
The user retains full ownership of the content they import or draft within the service. They grant the seller only the right to host, process and display it to the extent necessary to provide the service.
Content produced with the help of artificial intelligence is offered as a suggestion. The user remains its publisher: it is for them to review it, correct it and ensure that it does not infringe third-party rights before any publication.
At the end of the subscription, the user's data is retained and then deleted under the conditions and within the periods set out in the privacy policy.
14. Personal data
The processing of personal data is described in the privacy policy of the site, which forms an integral part of these Terms.
It sets out the categories of data processed, the purposes, the legal bases, the recipients, the retention periods and how data subjects may exercise their rights.
15. Liability
The seller is bound by an obligation of means in providing the service.
The service is a tool that supports drafting, publishing and prospecting. It warrants no commercial result, no audience, no publishing performance and no revenue. The estimates, scores and simulators offered are indicative and constitute neither a warranty nor professional advice.
As regards business users, the seller's liability is limited, for all damage taken together and per subscription year, to the amount actually paid by the user during the twelve months preceding the triggering event. Indirect damage is not compensable.
None of these limitations applies in the event of wilful misconduct, gross negligence or personal injury, nor in cases where the law prohibits them, in particular as regards consumers, who retain the benefit of the statutory guarantees of conformity and against hidden defects.
16. Amendment of the Terms
The seller may amend these Terms. The applicable version is the one in force on the date of subscription or renewal.
Any substantial amendment is notified to the user at least thirty days before it takes effect. A user who refuses the new version may terminate their subscription under article 8 before that date.
17. Governing law, complaints and mediation
These Terms are governed by French law.
Any complaint must be sent to the seller through the contact channel indicated in article 2. The seller undertakes to respond within a reasonable time.
In accordance with articles L. 611-1 et seq. of the French Consumer Code, a consumer who has not obtained satisfaction may refer the matter free of charge to a consumer mediator with a view to the amicable resolution of the dispute. The details of the competent mediator are provided by the seller on request. Consumers may also use the European online dispute resolution platform.
Failing amicable resolution, the dispute is brought before the competent courts. As regards business users, jurisdiction is conferred on the courts of the seller's registered office. Consumers retain the right to bring proceedings before any court designated by the French Code of Civil Procedure.