General terms of sale and use

1. Purpose

These general terms of sale and use (“the Terms”) govern the trial, purchase and use of DevOne, a desktop application that drives coding agents on your computer. They apply to any order placed from the application or from the dev-one.app website.

By starting the trial or placing an order, you accept these Terms. They prevail over any other document, unless the publisher agrees otherwise in writing.

2. The seller

DevOne is published by Shanai Labs Ltd, a private limited company under Israeli law registered with the Israeli Registrar of Companies under number 517293031, whose registered office is at 6 Yehuda Amihai, 6967164 Tel Aviv-Jaffa, Israel, reachable at contact@dev-one.app and +33 7 83 53 92 19 (“the publisher”).

Plans are sold by Polar Software, Inc., 3500 South DuPont Highway, Dover, DE 19901, United States (“Polar”), acting as reseller (“merchant of record”): Polar collects the payment, issues the invoice and collects the VAT, under its purchase terms published on polar.sh. The publisher grants you the right to use the Application and remains your point of contact for everything concerning the Application, how it works and these Terms.

Polar’s purchase terms cannot deprive you of the rights granted to you by the mandatory consumer protection rules of your country of residence, including the right of withdrawal and the legal guarantee of conformity described below.

3. Definitions

• Application : the DevOne software for Windows, macOS and Linux, its updates, and access from a paired phone.
• DevOne Account : the account, created by signing in with Google, GitHub or a link received by email, to which your usage rights are attached.
• AI Provider : the third-party artificial intelligence service you connect to the Application (Anthropic, OpenAI, GitHub Copilot, Google, OpenRouter…).
• Plan : the Monthly or Yearly subscription, or the Lifetime or Founders lifetime license.

4. What the Application requires

The Application runs on Windows (x64 and arm64), macOS 12 or later (Apple Silicon and Intel) and Linux (x64 and arm64, .deb and .rpm packages). A DevOne Account and an internet connection are required to verify your rights before an agent is launched.

The Application does not include any AI service. To put the agents to work, you connect your own subscription or account with an AI Provider. That service is subscribed to, paid for and used under your responsibility, under the AI Provider’s terms, including its usage limits. The publisher is not responsible for its availability, its prices or its answers.

5. Beta version

DevOne is offered as a beta version: features may change, be added or removed, and defects may remain. The beta does not reduce any of your rights: the legal guarantee of conformity (article 15) applies in full. The end of the beta changes neither the price nor the content of a Plan already purchased, except under the conditions of articles 9 and 19.

6. Plans and prices

Prices are shown in euros, including all taxes. The applicable price is the one displayed at the time of the order. A sold-out plan, such as Founders lifetime after the hundredth purchase, is no longer offered. Polar applies the VAT of the buyer’s country; a business established in the European Union that provides a valid VAT number is invoiced under the reverse-charge mechanism. The VAT amount is shown on the payment page and on the invoice.

7. Free trial

Each DevOne Account gets a one-month free trial. The trial starts at the first verification of your rights, when you sign in to the Application. It requires no bank card and does not turn into a subscription: nothing is charged when it expires.

Only one trial is granted per person. Creating other accounts to chain trials amounts to circumventing the rights verification (article 13): the publisher may then end the trial of those accounts.

8. Ordering and payment

Orders are placed from the Application (“Choose a plan”) or from the website. You are directed to a secure Polar payment page, which shows the accepted payment methods. The contract is concluded when the payment is confirmed; Polar immediately sends you a confirmation by email. The invoice is issued by Polar and remains available at any time from the Application, with “Manage my subscription”.

Subscriptions are paid in advance, at the start of each period. Neither the publisher nor the Application receives your bank card details.

9. Term, renewal and cancellation of subscriptions

Monthly and Yearly subscriptions renew automatically for an identical period, at the current price, until you cancel them. You can cancel at any time, free of charge and online, from the Application, with “Manage my subscription”; receipt of your cancellation is confirmed to you by email, with the date on which it takes effect. Cancellation takes effect at the end of the period already paid, with no refund for the current period, except in the cases provided for by law set out below.

For the Yearly subscription, you are informed in writing, between three months and one month before the end of the period, of your option not to renew it, in accordance with article L215-1 of the French Consumer Code (Code de la consommation). This reminder is sent to you in a dedicated email, to the address of your DevOne Account, two months before the renewal date; the deadline for not renewing appears in it in a clearly visible box.

The price of a current subscription does not change during the paid period. An increase applies only on renewal: you are notified by email at least thirty days in advance, and you can cancel free of charge before it takes effect.

Articles of the French Consumer Code (Code de la consommation) reproduced (article L215-4)

Article L215-1. For service contracts concluded for a fixed term with a tacit renewal clause, the professional service provider shall inform the consumer in writing, by dedicated personal letter or email, no earlier than three months and no later than one month before the end of the period allowing renewal to be refused, of the option not to renew the contract concluded with a tacit renewal clause. This information, provided in clear and understandable terms, shall state, in a clearly visible box, the deadline for non-renewal.

Where this information has not been sent in accordance with the provisions of the first paragraph, the consumer may terminate the contract free of charge at any time from the renewal date.

Advance payments made after the last renewal date or, for open-ended contracts, after the date on which the initial fixed-term contract was converted, shall in that case be refunded within thirty days of the termination date, less the sums corresponding to the performance of the contract up to that date.

The provisions of this article apply without prejudice to those that legally subject certain contracts to specific rules regarding consumer information.

By way of exception to the first paragraph of this article, for contracts for the supply of television services within the meaning of article 2 of Law no. 86-1067 of 30 September 1986 on freedom of communication and for contracts for the supply of on-demand audiovisual media services, the consumer may terminate the contract free of charge at any time from the first renewal, provided that they move home or their tax household changes.

Article L215-1-1. Where a contract was concluded electronically, or was concluded by other means and the professional, on the day of termination by the consumer, offers the consumer the possibility of concluding contracts electronically, termination shall be made possible by that means.

To this end, the professional shall provide the consumer with a free feature allowing them to carry out electronically the notification and steps required to terminate the contract. When the consumer gives notice of termination of the contract, the professional shall confirm receipt of the notification and inform them, on a durable medium and within a reasonable time, of the date on which the contract ends and of the effects of termination.

A decree sets out, in particular, the technical arrangements to ensure identification of the consumer and easy, direct and permanent access to the feature mentioned in the second paragraph, such as how it is presented and used. It determines the information to be provided by the consumer.

Article L215-2. The provisions of this chapter, with the exception of article L. 215-1-1, do not apply to operators of drinking water and sanitation services.

Article L215-3. The provisions of this chapter also apply to contracts concluded between professionals and non-professionals.

Article L241-3. Where the professional has not made the refund under the conditions provided for in article L. 215-1, the sums due bear interest at the legal rate.

10. Lifetime and Founders lifetime licenses

A Lifetime or Founders lifetime license gives access to the Application without recurring payment, for as long as the publisher operates DevOne. It includes all updates released during that period, major versions included, at no extra cost.

If the publisher decides to discontinue DevOne, it will inform you by email at least twelve months before discontinuation. It will then make available to you a final version of the Application that works without online verification of your rights, and that you can use with no time limit. If DevOne is transferred to a third party, your license and these commitments pass to the acquirer.

Your Plan is tied to your DevOne Account, not to a computer: you can use the Application on all the computers you use, with no limit on their number, provided you are the only person using your account. Sharing your account with another person is not permitted (article 13).

11. Without active rights

At the end of the trial or of a subscription, the Application switches to read-only mode: your conversations and files remain readable on your computer, but no agent starts until a Plan is active. No local data is deleted.

12. Right of withdrawal

You have fourteen days from your purchase to withdraw, without giving any reason or paying any costs (article L221-18 of the French Consumer Code). This right applies to all Plans, even if you have already used the Application: the publisher does not ask you to waive it. For a subscription, it covers the first payment; subsequent renewals are governed by article 9.

To withdraw, use the “Withdraw from contract here” function To confirm: location: in the Application, Account section, or write to contact@dev-one.app stating your DevOne Account and your order. You can also use the template below. An acknowledgment of receipt is sent to you by email, with the date and time of your request.

The full refund is made no later than fourteen days after your request, using the payment method you used. Your Plan ends on the same date.

Model withdrawal form

To Shanai Labs Ltd, 6 Yehuda Amihai, 6967164 Tel Aviv-Jaffa, Israel, contact@dev-one.app: I hereby give notice that I withdraw from the contract for the DevOne Plan below. Plan ordered on: … Consumer’s name: … DevOne Account email address: … Date: …

13. License to use

The publisher grants you, for the duration of your Plan or of the trial, a personal, non-exclusive and non-transferable right to install and use the Application for your personal or professional needs.

You agree not to resell, rent or make the Application available to third parties, not to circumvent the rights verification, and not to decompile it except where permitted by law. The open-source components shipped with the Application, including the omp engine under the MIT license, remain governed by their own license.

14. Your use of the agents

The agents act on your computer with your permissions: they read and modify files, run commands, and use the tools and websites you are signed in to. You choose the folders, the permissions and the level of control, and you remain responsible for the actions you entrust to them and for checking them.

A paired phone can do everything your computer does. If you lose a phone, revoke it from the Application.

You comply with the terms of your AI Provider and of the services you connect, and with third parties’ rights over the code and content you process.

15. Warranties and liability

You benefit from the legal guarantee of conformity for digital content and services (articles L224-25-1 et seq. of the French Consumer Code) and from the guarantee against hidden defects, under the following terms.

Legal guarantee: Monthly and Yearly subscriptions

The consumer is entitled to invoke the legal guarantee of conformity if a lack of conformity appears during the term of your subscription (one month for the Monthly plan, one year for the Yearly plan, renewals included) from the supply of the digital content or digital service. During this period, the consumer only needs to establish the existence of the lack of conformity, not the date on which it appeared. The legal guarantee of conformity entails an obligation to provide all updates necessary to keep the digital content or digital service in conformity during the term of your subscription (one month for the Monthly plan, one year for the Yearly plan, renewals included).

The legal guarantee of conformity entitles the consumer to have the digital content or digital service brought into conformity without undue delay following their request, free of charge and without significant inconvenience to them.

The consumer may obtain a price reduction while keeping the digital content or digital service, or may terminate the contract and obtain a full refund in exchange for giving up the digital content or digital service, if:

• 1° The professional refuses to bring the digital content or digital service into conformity;
• 2° Bringing the digital content or digital service into conformity is unjustifiably delayed;
• 3° The digital content or digital service cannot be brought into conformity without costs imposed on the consumer;
• 4° Bringing the digital content or digital service into conformity causes significant inconvenience to the consumer;
• 5° The lack of conformity of the digital content or digital service persists despite the professional’s unsuccessful attempt to bring it into conformity.

The consumer is also entitled to a price reduction or to termination of the contract where the lack of conformity is so serious that it justifies an immediate price reduction or termination of the contract. The consumer is then not required to first request that the digital content or digital service be brought into conformity.

Where the lack of conformity is minor, the consumer is entitled to cancel the contract only if the contract does not provide for payment of a price.

Any period during which the digital content or digital service is unavailable while it is being brought back into conformity suspends the remaining period of the guarantee until the digital content or digital service is supplied in conformity again.

These rights result from the application of articles L. 224-25-1 to L. 224-25-31 of the French Consumer Code.

A professional who in bad faith obstructs the implementation of the legal guarantee of conformity is liable to a civil fine of up to 300,000 euros, which may be increased to up to 10% of average annual turnover (article L. 242-18-1 of the French Consumer Code).

The consumer also benefits from the legal guarantee against hidden defects under articles 1641 to 1649 of the French Civil Code (Code civil), for two years from the discovery of the defect. This guarantee gives entitlement to a price reduction if the digital content or digital service is kept, or to a full refund in exchange for giving up the digital content or digital service.

Legal guarantee: Lifetime and Founders lifetime licenses

The consumer has two years from the supply of the digital content or digital service to invoke the legal guarantee of conformity if a lack of conformity appears. For one year from the date of supply, the consumer only needs to establish the existence of the lack of conformity, not the date on which it appeared.

The legal guarantee of conformity entails an obligation to provide all updates necessary to keep the digital content or digital service in conformity.

The legal guarantee of conformity entitles the consumer to have the digital content or digital service brought into conformity without undue delay following their request, free of charge and without significant inconvenience to them.

The consumer may obtain a price reduction while keeping the digital content or digital service, or may terminate the contract and obtain a full refund in exchange for giving up the digital content or digital service, if:

• 1° The professional refuses to bring the digital content or digital service into conformity;
• 2° Bringing the digital content or digital service into conformity is unjustifiably delayed;
• 3° The digital content or digital service cannot be brought into conformity without costs imposed on the consumer;
• 4° Bringing the digital content or digital service into conformity causes significant inconvenience to the consumer;
• 5° The lack of conformity of the digital content or digital service persists despite the professional’s unsuccessful attempt to bring it into conformity.

The consumer is also entitled to a price reduction or to termination of the contract where the lack of conformity is so serious that it justifies an immediate price reduction or termination of the contract. The consumer is then not required to first request that the digital content or digital service be brought into conformity.

Where the lack of conformity is minor, the consumer is entitled to cancel the contract only if the contract does not provide for payment of a price.

Any period during which the digital content or digital service is unavailable while it is being brought back into conformity suspends the remaining period of the guarantee until the digital content or digital service is supplied in conformity again.

These rights result from the application of articles L. 224-25-1 to L. 224-25-31 of the French Consumer Code.

A professional who in bad faith obstructs the implementation of the legal guarantee of conformity is liable to a civil fine of up to 300,000 euros, which may be increased to up to 10% of average annual turnover (article L. 242-18-1 of the French Consumer Code).

The consumer also benefits from the legal guarantee against hidden defects under articles 1641 to 1649 of the French Civil Code (Code civil), for two years from the discovery of the defect. This guarantee gives entitlement to a price reduction if the digital content or digital service is kept, or to a full refund in exchange for giving up the digital content or digital service.

Liability

The publisher is liable for direct damage caused by a proven breach of its obligations. It is not responsible for the answers of AI Providers, for third-party services, or for the consequences of actions you have requested from or authorized for the agents. Back up your work regularly, for example with Git. The publisher does not guarantee any minimum level of service quality beyond the conformity of the Application. In the event of a security incident affecting your DevOne Account, it will inform you by email and tell you what steps to take. Nothing in these Terms limits the rights that the law guarantees to consumers.

16. Personal data

Your conversations and files stay on your computer. The data processed by the publisher, and the data the Application sends to third parties, are described in the privacy policy.

17. Customer service and mediation

For any question or complaint: contact@dev-one.app.

If a dispute is not resolved by a written complaint, the consumer may use the consumer mediator free of charge: To confirm: SMP (Société de la Médiation Professionnelle), membership requested on November 9, 2026, agreement to be signed (article L612-1 of the French Consumer Code).

18. Governing law

These Terms are governed by French law, although the publisher is established in Israel. Failing an amicable agreement, the dispute will be brought before the competent court; the consumer may, at their choice, bring proceedings before the court of the place where they lived at the time the contract was concluded or where the harmful event occurred. For business customers, the ordinary rules of jurisdiction apply. The choice of French law does not deprive consumers residing in another European Union country of the protection of that country’s mandatory rules.

19. Changes to the Terms

The publisher may modify these Terms. The version applicable to an order is the one in force on its date. For a current subscription, the new Terms are sent to you by email at least thirty days before they apply, and you may cancel free of charge if you refuse them. They apply to a Lifetime or Founders lifetime license only if they do not reduce your rights.