1. Who provides the service

YumaFLY is a service of Pro Business S.r.l., registered office at Via Siegmund Freud 4, 09126 Cagliari, Italy, VAT number IT04009250921 (“we”). By using the app or the website you accept these terms. If you do not accept them, do not use the service.

2. What the service does, and what it does not do

YumaFLY helps you plan a flight with your own drone, collects the photographs the drone takes and processes them into a three-dimensional model from which indicative measurements can be derived.

YumaFLY is not a land surveying service and does not produce documents with legal, cadastral or evidentiary value. It does not replace the work of a land surveyor, a building surveyor, an engineer or a qualified expert, and it certifies nothing.

3. Your account

To use the service you must register with a valid email address. You are responsible for what happens with your account and for your access credentials. You must be at least 18 years old.

You may close your account at any time by writing to us. We may suspend or close an account that breaches these terms or the law, giving notice except where the law prevents us.

4. Credits

The service is paid for with prepaid credits. A survey consumes one or more credits according to the number of photographs processed, as stated on the website at the time of purchase. If processing fails because of a fault on our side, the credit is returned to you automatically.

Purchased credits do not expire.
Trial credits are free, personal and do not expire. They give no right to any refund.
Credits are not transferable, cannot be converted into money and are not refundable once consumed.

If you are a consumer you have the right to withdraw within fourteen days of purchase: if you have already consumed credits in that period, the refund is reduced in proportion to what you used, under article 57 of the Italian Consumer Code.

5. The flight is yours, and so is the responsibility for it

We do not fly the drone. The app proposes a route and may send commands to your drone, but you remain the pilot: you decide whether, when and where to fly, you must stay in control, and you must be able to interrupt the flight at any moment.

You declare and warrant that you:

comply with all drone regulations applicable where you fly, including the European rules (Regulation EU 2019/947) and the provisions of the national authority, in Italy ENAC;
are registered as an operator and hold, where required, the pilot attestation or certificate appropriate to the category of flight;
hold third-party liability insurance where it is compulsory;
have obtained the authorisations needed to fly over the area concerned, and the consent of whoever holds title over the property being photographed;
respect the privacy of the people and properties you may photograph.

Any damage arising from the flight remains yours: damage to the drone, to people, animals, property, crops or buildings, loss of the drone, administrative penalties, third party claims. We are not asking you to waive rights you cannot waive: we are stating how responsibility is allocated by law, because the flight is under your command.

6. Measurements are indicative, and must be checked

The model produced has a shape faithful to the building photographed. The level of detail depends on the altitude you flew at, because altitude decides how many centimetres of roof fit into one pixel. With a 12-megapixel camera, processed at normal quality:

flying at 20 metres, the model resolves details of about 3 cm;
at 40 metres, about 5.5 cm;
at 60 metres, about 8 cm;
at 100 metres, about 14 cm.

These are values expected in normal conditions, not guarantees. They worsen with few satellites, wind, reflective or uniform surfaces such as a new roofing membrane or a wet roof, insufficient overlap between photographs, poor light or changing light during the flight. Even repeating the same survey twice does not give results that match to the millimetre: in our own tests two processing runs of the same set of photographs differed by about 6 centimetres.

The absolute scale also comes from the drone's position data, which come from a consumer satellite receiver: distances measured inside the model are more reliable than the position of the model in the world.

Measurements obtained from YumaFLY are indicative and you must verify them before using them for a quotation, a material order, a design, a contract or any other decision involving expenditure. The simplest way is to place a reference of known length in the scene before flying, and to compare one distance measured with a tape.

You expressly accept that we will not be liable for measurement errors nor for the consequences of decisions taken on the basis of the measurements: material ordered in excess or short, incorrect quotations, work to be redone, time lost, opportunities missed. Our undertaking is to process your photographs with the best available technique, not to guarantee you an exact result.

7. Proper use of the service

You may not use YumaFLY to photograph areas or installations over which you have no title or authorisation, to breach the privacy of third parties, to circumvent credit consumption limits, to resell the service without a written agreement with us, or for purposes prohibited by law.

8. Your photographs and your models

The photographs you upload and the models derived from them remain yours. You grant us the technical licence, limited to what is needed, to store and process them in order to provide the service. We may use aggregated and anonymous data — processing times, number of photographs, outcomes — to improve the service: never your images, never your models, never your identifiable data.

You may delete your surveys whenever you wish. On closing your account your content is removed within thirty days, except what we must retain for accounting or legal obligations.

9. Availability of the service

We do what we can to keep the service running, but we do not guarantee that it will always be available nor that processing will complete within a given time. We may interrupt it for maintenance, updates or causes beyond our control. Times stated on the website are estimates based on real surveys, not contractual commitments.

10. Limitation of liability

To the extent permitted by law, our total liability towards you, for any reason, does not exceed what you have paid us in the twelve months preceding the event giving rise to it.

We are not liable for indirect damages: loss of profit, loss of customers, loss of data, business interruption, reputational harm.

The above does not apply to cases of wilful misconduct or gross negligence, to personal injury, or to any other case in which the law forbids limiting liability: article 1229 of the Italian civil code renders void any agreement to the contrary, and we are not attempting to circumvent it. If you are a consumer, the rights granted to you by the Italian Consumer Code remain unaffected and no clause can remove them.

11. Changes

We may amend these terms. If a change is significant we will tell you by email or on sign-in, at least fifteen days before it takes effect. If you do not accept it you may close your account and ask for a refund of purchased credits not yet consumed.

12. Governing law

These terms are governed by Italian law. For disputes with professional customers the courts of Cagliari have exclusive jurisdiction. If you are a consumer, the court of your place of residence or domicile remains competent, and you may use the European online dispute resolution platform.

13. Language

These terms are published in several languages. In the event of any discrepancy between versions, the Italian text prevails.

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