Terms of Service

Douvo is provided by SAMPATZE VALERIOS, THESSALONIKI, Greece — “we” below. “You” is whoever uses the app or the website.

Creating an account or using the app means you accept these terms. If you disagree with one of them, don't use it — that is the only honest answer we can give.

These terms sit alongside the Privacy Policy, which explains how we handle data and forms part of this agreement.

Douvo is a work-organisation app for tradespeople and small crews: schedule and appointments, clients, jobs, phased projects, materials, expenses, payments and instalments, a crew with roles, and a public progress link for the client.

It is offline-first: you can work with no signal, and everything uploads once signal returns.

• You must be at least 18 years old.
• Douvo is meant for professional use, in the course of your trade.
• If you create an account on behalf of a business, you confirm you are authorised to bind that business to these terms.
• By signing up you confirm you use Douvo as a professional or a business. If the law of your country nevertheless treats you as a consumer, the rights it grants you mandatorily apply and prevail over any term here that limits them.

• Give accurate details and keep them up to date.
• You are responsible for your password and for anything done from your account.
• If you sign in with an Apple or Google account, securing that account is your responsibility.
• One account belongs to one person. Don't share credentials — add a crew member instead.
• Tell us immediately if you suspect unauthorised access.

Every account belongs to a business, even if you work alone. The owner controls who joins, with which role, and what they see.

• You invite members by email. You confirm you have a reason to invite them and that the address is correct.
• The roles are owner, manager and employee. An employee sees the jobs assigned to them, not prices, profit or statistics.
• Business data belongs to the business. When a member leaves, the content stays.
• The owner is responsible for what their members do inside the service.

Everything you enter — clients, jobs, photos, amounts — remains yours. We acquire ownership of none of it.

You grant us a limited, non-exclusive licence to store, copy, transmit and display that content for the sole purpose of running the service for you: hosting, syncing, backups, showing it to your crew and on the public link you switch on yourself. The licence ends when you delete the content or your account.

We do not use your content for advertising, we do not sell it, and we do not train artificial-intelligence models on it.

When you put third-party details into Douvo, you are their controller and we are the processor. You undertake that:

• You have a lawful basis for holding those details and you comply with the GDPR towards your clients.
• You do not upload special categories of data (health, beliefs, criminal records) — Douvo is not built for them.
• You photograph clients' premises only with their consent, and you don't upload other people's faces without reason.
• You answer your clients' access and deletion requests. Ask us if you need technical help.

By using Douvo, you agree not to:

• break the law or infringe anyone's rights through the service;
• upload unlawful, abusive or malicious content, or files containing malware;
• attempt to reach other users' data, bypass security boundaries, or security-test the service without our written permission;
• decompile or reverse-engineer it, beyond what the law makes unwaivable;
• harvest data by automated means, or load the infrastructure in a way that harms other users;
• resell access to the service.

The link you create for a client is public to whoever holds it: there is no password. You decide who receives it and whether financial figures are shown.

You are responsible for what appears there, photos above all. You can stop sharing at any moment, and the link dies immediately.

Douvo runs on a subscription per business. The owner of the business buys it and pays for it from their account on douvo.app. Every plan has every feature; plans differ only in how many people can work in the business. The prices are on the douvo.app home page.

• Trial: every new business starts with a free 14-day trial, no card needed. If you do not pay, the trial simply ends and you are charged nothing.
• Renewal: the subscription is monthly or yearly and renews automatically for the same period until you cancel. You are charged at the start of each period.
• Payment: by card, through Stripe. You give your card details to Stripe; we never see them.
• Taxes: the price you see at checkout is final. For Greece it includes VAT. For other countries the tax is worked out automatically from your billing address and the VAT number you provide; EU businesses with a valid VAT number are charged under the reverse-charge mechanism.
• Currency: all charges are in euros. If your card is in another currency, your bank may add conversion fees.
• Changing plan: you can move up or down a plan at any time from your account. Within the same period the difference goes on your next invoice; switching between monthly and yearly is charged now, with credit for what you did not use.
• Price changes: if we change the prices we will email you at least 30 days beforehand. The new price applies from your next renewal; if you disagree, cancel before it.
• Failed payment: if a charge fails, Stripe retries for a few days. If it still fails, the subscription ends as if you had cancelled it.
• Receipts: the receipt or invoice for every payment is issued through Stripe and available in your account as a PDF.

No refunds. Payments are not refunded, not even pro rata for time you did not use — and not when the payment was made without a prior trial period. By paying you ask us to start providing the service immediately and acknowledge that, once it has started, you lose the 14-day right of withdrawal that EU law provides for distance contracts. Try it first with the free period.

The service keeps evolving. There may be bugs, and changes that affect data may be necessary. Keep your own copies of anything critical.

Cancel whenever you like from your account on douvo.app, in two taps. Cancellation takes effect at the end of the period you have already paid for; until then everything keeps working.

• After expiry or cancellation the owner carries on using the business alone, with a limit of one person.
• The other members of the crew become “off plan”: they cannot access the business until a plan covers them again.
• Nothing is deleted. Clients, jobs, projects, photos and payments stay where they are for as long as the account exists.
• You can reactivate the subscription at any time, from the same place.

This section exists so there is no misunderstanding later:

• It is not accounting or tax software. It issues no invoices and sends nothing to myDATA or the Greek tax authority.
• The PDFs it produces are quotes and delivery receipts for your client, not official tax documents.
• It does not replace your accountant. Tax and social-security obligations remain yours.
• It gives no legal, tax or technical advice. What it shows is your own data, as you entered it.
• It is not an archiving or backup service. We keep copies to run the service, not as a guaranteed preservation service.

Douvo lets you work with no signal. What you write queues on the device and uploads as soon as a network appears, in the order it happened.

Until that sync happens, the only copy of that work is on your phone. If you lose it, wipe it, or uninstall the app before it finds signal, that data is gone and we cannot recover it.

If the same record is changed on two devices at once, the last write to reach the server wins.

We try to keep the service up, but we do not guarantee uninterrupted operation. Maintenance, updates or security may require downtime.

We may add, change or withdraw features. If we withdraw something material or discontinue the service, we will tell you at least 30 days in advance so you can request a copy of your data.

Douvo relies on third-party providers (Supabase, Vercel, Stripe, Resend, Expo, Apple, Google). We do not control their availability and are not liable for outages caused by them.

Subscriptions are bought on douvo.app, not through the App Store or Google Play. If you installed the app from a store, that store's terms also apply to the app itself. For Apple specifically:

• This agreement is between you and us, not with Apple.
• Apple has no obligation to provide maintenance or support for the app.
• In the event of a warranty failure, Apple may refund the price paid to Apple — which is zero, since no purchase is made through the App Store; any further claim is ours to answer.
• We, not Apple, are responsible for claims relating to the app, including product-liability and intellectual-property claims.
• Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them.

The software, the design, the name “Douvo” and the logo are ours. You get a personal, non-exclusive, non-transferable right to use the service for as long as you keep to these terms.

You may not copy, modify or create derivative works from the service, or use our mark without written permission.

You can stop whenever you like: delete your account in the app, or ask us by email.

We may suspend or terminate your access if you materially breach these terms, if your use endangers the service or other users, or if the law requires it. Except in urgent cases we will warn you first and give you reasonable time to fix it.

After termination your data is deleted as described in the Privacy Policy.

The service is provided “as is” and “as available”, with no warranty that it will be uninterrupted, error-free or fit for a particular purpose. We do not warrant that calculated figures (costs, balances, statistics) are accurate if the data entered is not.

Nothing in these terms limits rights granted to you by mandatory law.

To the fullest extent the law allows, we are not liable for lost profits, lost custom, indirect or consequential damage, or for the loss of data that had not yet synced to our servers.

Where the law permits a cap, our total liability is limited to what you paid us in the twelve months before the event — and to one hundred (100) euros where nothing was paid, for instance during the trial period.

These limits do not apply to wilful misconduct or gross negligence, to personal injury or death, or wherever the law forbids them.

If a third party comes after us because of your content or your breach of these terms — a claim from one of your clients about the details you hold, for instance — you agree to cover our loss and reasonable defence costs.

We may update them as the service develops. The date at the top marks the version in force.

For material changes we will tell you in the app or by email at least 30 days beforehand. Continuing to use Douvo afterwards counts as acceptance; if you would rather not, you can delete your account.

Greek law applies. The courts of THESSALONIKI have jurisdiction over any dispute, without prejudice to any mandatory jurisdiction that applies to consumers.

Before taking anything to court, write to us. Most things are settled in one email.

If you live in the EU and the law treats you as a consumer, you may also use the European Commission's online dispute resolution platform: https://ec.europa.eu/consumers/odr.

• If a term is held invalid, the rest stay in force.
• You may not transfer this agreement without our consent. We may, if the business is transferred, having told you first.
• Not enforcing a right immediately does not mean we waived it.
• These terms together with the Privacy Policy are the whole agreement between us.
• These terms exist in Greek and in English. If the two differ, the Greek text prevails for residents of Greece and the English text for everyone else.

SAMPATZE VALERIOS, THESSALONIKI, Greece. Email: app.douvo@gmail.com.