These terms govern the use of the mobile app Lisvaro, developed and distributed by Luis Suñol Mateo (acform), owner of the site acform.es. They refer only to the Lisvaro app: the other acform apps have their own terms, and use of the website is governed by the legal notice.
By installing or using Lisvaro you accept these terms. If you do not accept them, do not use the app and uninstall it.
Data processing is explained separately, in the Lisvaro privacy policy, which forms part of these terms.
1. What Lisvaro is, and what it is not
Lisvaro is a personal price notebook. The user saves the address of the product pages that interest them, sets a target price, a discount percentage or an alert for a sold-out product coming back on sale, and the app notifies them on their own phone when the condition is met. They can also save addresses without watching them, in a separate list, to keep them to hand without any of them being consulted.
So that it is clear what it is not:
- It is not a shop. It sells nothing, does not act as intermediary in any purchase, does not handle orders, does not charge, does not ship and does not process returns.
- It is not a price comparison site or a catalogue. It does not suggest products, does not search for offers and does not recommend where to buy.
- It has no relationship with the shops whose pages it reads. We are not their representative, distributor or partner, and none of them sponsors, authorises or reviews this app.
- It has no server where your data lives. Each installation works on its own, with the data on the device itself. The only connection to a server of ours is the one that asks for permission to read eBay listings, and it carries nothing of yours: it is explained in the privacy policy.
2. Who may use it
The app is intended for people over 14 years of age, for personal, non-professional use. It is not designed for commercial activities, resale, market research or systematic monitoring of competitors.
3. Licence of use
A personal, non-exclusive, revocable and non-transferable licence of use is granted, limited to installing and using the app on the user's own devices.
The following are not permitted: redistributing the installation package, reselling it, renting it, sublicensing it, modifying it, or decompiling it or reverse-engineering it beyond what the law permits on a mandatory basis (in particular, art. 100 of the consolidated text of the Spanish Intellectual Property Act, on interoperability). Nor is removing the authorship notices.
4. Prices are indicative, and this is the most important point in this document
The app automatically reads the public product page and interprets what it finds. It is an automatic process applied to pages that change without notice, and it can therefore be wrong. Specifically, it may happen that:
- The price read is wrong, incomplete or out of date.
- The price of another variant of the product is read —another size, colour or format— when the page publishes several at the same address.
- The availability read does not match the real one. The app takes from the page the stock information the shop itself publishes, which may be out of date, may refer to the listing as a whole rather than to the specific version you follow, or may change between the moment of the reading and the moment you open the alert. A back-on-sale alert reserves nothing, sets no units aside and does not guarantee that stock will be left when you get there.
- A promotion, a coupon, a volume discount, a members' price or a particular condition is not detected.
- The price shown does not include shipping costs, taxes, surcharges or payment conditions, which the product page does not usually publish.
- An alert does not arrive, or arrives late: it depends on the phone's operating system, the connection, the battery and the restrictions the manufacturer applies to background apps.
The only valid price, and the only valid availability, are those the shop shows at the moment of purchase. Always check the price and the conditions in the shop itself before buying. The information Lisvaro gives is indicative and does not constitute an offer, a commitment, or purchasing advice.
5. The app depends on pages we do not control
Each shop is free to change its page, reorganise it, stop publishing the price in a readable form or prevent automated reading. When that happens, that product can no longer be watched, without prior notice and without our being able to prevent it.
In addition, if the person responsible for a website asks us to stop reading it, we comply: that is the public commitment we make on the crawler page. In that case, products from that domain are no longer checked. The list of shops that work today is not a guaranteed feature and may shrink at any time.
We do not guarantee that the app will work without interruption, or that it will be compatible with every device, system version or manufacturer.
6. Background operation, battery and data
In order to alert you without the app being open, the operating system has to allow it to wake up. Some manufacturers close background apps aggressively: if the system stops the app, there will be no checks and no alerts, and that is beyond our control. The app itself explains in its settings which permissions it is advisable to grant.
Checks consume the user's data and battery, depending on their tariff and device. Product image loading can be switched off in Settings to reduce consumption.
7. Proper use by the user
By using the app you undertake to:
- Add only addresses of public product pages, accessible without registering.
- Not use the app to circumvent technical protection measures, verification walls, access restrictions or private areas of any site.
- Not register a disproportionate number of products from the same site, nor use the app in a way that places an abnormal load on a third party's servers.
- Respect the terms of use of each shop.
The app includes frequency limits —never less than one hour between two checks of the same product— and respects each site's robots.txt file; those limits cannot be disabled and their purpose is precisely this.
8. Intellectual property and trade marks
The app, its code, its design, its texts and its name are the property of Luis Suñol Mateo, or are used with the corresponding authorisation.
The trade names, trade marks and logos of shops and manufacturers belong to their respective owners. Where they appear in the app they do so for descriptive purposes only, to identify the origin of a page that the user themselves has added, and their mention implies no relationship, sponsorship, authorisation or recommendation whatsoever.
The app does not reproduce or republish the content of the pages it reads: it stores the price, the previous or crossed-out price if the page publishes one, the currency, the availability, the date, the product name, the name of the specific version being followed —the size, the colour or the format— the address of its image, the description the page itself publishes and its average rating with the number of opinions. It stores neither the written reviews nor the rest of the page text, and what it does store is republished nowhere: it lives on the device of whoever added the listing.
If you are a rights holder and consider that the app makes improper use of them, write to us at lisvaro [at] acform.es: we deal with such requests and, where appropriate, exclude the domain.
9. Third-party links and content
From the app you can open the product page in the browser or in the app's own viewer. From that moment you are on a third party's website, with their terms, their cookies and their privacy policy. We are not responsible for their content, availability, prices or practices.
10. Cost of the app and payments
The app is downloaded free of charge and works without paying anything: it watches, it notifies, it keeps the history and it reads the same shops. The free version has limits of scale —how many products can be followed at once, how often they are checked, how many alerts each one takes and how many days of history are drawn— and the app itself shows them up front.
Inside the app a single one-off purchase is offered that lifts those limits. There is no subscription and no recurring charges, and it adds no shops and changes nothing about how a price is read: the only thing that changes is how much you can cover.
The purchase is handled entirely by Google Play (or the App Store), which acts as the seller. The invoice, the transaction conditions and refunds are governed by the policies of that app store, and refund requests must be addressed to it, not to us. Any rights of withdrawal granted to the consumer by law are likewise exercised through that store.
The app contains no advertising, does not sell data and makes no charge of its own: no payment data is provided to it, because the transaction takes place entirely within the app store. Whether the purchase has been made is asked of the Google Play app on the phone itself; the answer is stored on the device and does not travel to any server of ours.
11. Limitation of liability
To the fullest extent permitted by applicable law, we are not liable for:
- The purchases the user decides to make, their conditions, or the products acquired.
- The shop's actual price differing from the one the app displayed.
- A purchase opportunity missed because an alert did not arrive, arrived late, or the price read was incorrect.
- The interruption of the reading service for a particular shop.
- The loss of the data stored on the device, through failure, uninstallation, data clearing or a change of handset. The developer holds no copy of that data and cannot recover it. Whether it can be recovered depends solely on the user: on having Android's backup switched on, or on having saved a backup of their own, as explained in point 7 of the privacy policy.
None of the above excludes or limits liability for wilful misconduct, gross negligence, personal injury, or any other liability that the law declares non-excludable, nor the rights that consumer legislation grants the user on a mandatory basis.
12. No consumer relationship with the shops
The purchase relationship is always established between the user and the shop. Any complaint about an order, a price, a delivery, a warranty or a return must be addressed to the shop, which is the only selling party.
13. Data protection
The processing of information is set out in the Lisvaro privacy policy. In short: the data resides on the user's device, there is no app server where that data lives, and the developer neither receives nor keeps any copy. The only connection to a server of our own is the one that asks for permission to read eBay listings, and it carries nothing of the user's.
14. Changes to the app and to these terms
The app may evolve: functions may be added, withdrawn or changed in behaviour. These terms may be updated to reflect those changes or those in applicable legislation. The version in force is always the one published at this address, with its date at the foot. Continued use of the app after a new version is published implies acceptance of it; if you do not accept it, uninstall the app.
15. Duration and termination
The licence is in force for as long as you use the app and ends when you uninstall it. We may suspend it or withdraw the app from distribution in the event of serious breach of these terms or for legal, technical or commercial reasons.
16. Partial invalidity
If any clause of these terms is declared void or unenforceable, the remainder shall remain in force and shall be interpreted in accordance with the purpose of these terms.
17. Governing law and dispute resolution
These terms are governed by Spanish law, without prejudice to the mandatory consumer protection rules of the country in which you have your habitual residence, which apply to you in any event and which this clause cannot limit. If you use the app as a consumer, you may bring proceedings before the courts of your own domicile, as consumer legislation entitles you to do. For uses not subject to consumer legislation, the courts of Barcelona shall have jurisdiction.
Before going to court, write to us: most matters are resolved by email.
18. Contact
lisvaro [at] acform.es (written this way on purpose, to hinder automated address harvesting), or the contact form.
Last updated: 25 August 2026
Owner of the app: Luis Suñol Mateo (acform). For any question regarding these terms, use the contact form or write to lisvaro [at] acform.es.