Dongi

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Privacy Policy

Last updated: 29 October 2026

Dongi is an app for splitting trip expenses within a travel group. This policy explains what personal data we process, why, and what rights you have under the EU General Data Protection Regulation (GDPR) and Spanish data protection law (LOPDGDD).

1. Who is responsible

Futurotec Soluciones S.L. (NIF B21625157), Calle Canalejas 16, 08028 Barcelona, Spain. Contact for anything about your data: .

2. What data we process

• Account: your name, email address, password (stored only as a secure hash by our hosting provider), profile photo if you add one, and your chosen language.
• Trip content you and your group enter: trip names and photos, team names, the names of travellers (including people without an account, such as children), expenses (description, amount, currency, date, category, who paid, who shares), receipt photos and recorded payments.
• Notifications: if you turn them on, a technical address for your device provided by your browser's push service.
• Technical data: our hosting providers process your IP address and basic request data to deliver the service and keep it secure. The app stores your login session and a copy of your trips on your own device so it works offline.

We do not use advertising, analytics or tracking cookies, and we do not sell or rent your data.

3. Why we use it and on what legal basis

• To provide the app — create your account, show trips to their members, calculate balances, sync between devices: performance of the contract with you (Art. 6(1)(b) GDPR).
• To send notifications when someone adds an expense: your consent (Art. 6(1)(a)), which you can withdraw at any time in Settings.
• To keep the service secure and prevent abuse: our legitimate interest (Art. 6(1)(f)).

When you add other people's names to a trip, please only add information they would expect to be shared with the group.

4. Who can see your data

Trip content is visible only to members of that trip. Members can find you by your exact email address to add you to a trip; your name and profile photo are shown to people you share a trip with.

5. Service providers

Provider	Purpose	Location
Supabase, Inc.	Database, login, file storage and server functions	EU (Paris, France)
Vercel, Inc.	Hosting and delivery of the app's files	Global network; may involve the USA
Your browser's push service (e.g. Google, Apple, Mozilla)	Delivering notifications you turned on	May involve the USA

These providers act as data processors under contracts that require them to protect your data. Where data is transferred outside the EU, this is covered by the European Commission's Standard Contractual Clauses and/or the EU–US Data Privacy Framework.

6. How long we keep it

We keep your account data until you delete your account. Trip content stays for as long as the trip exists, because it belongs to the whole group; when you delete your account, your account and profile are removed and your name stays in shared trips only as the name the group typed in. Trips where you are the only member are deleted. Server backups may keep deleted data for a short period before they are overwritten.

7. Your rights

You can access, correct, delete, restrict or object to the processing of your data, and receive it in a portable format. In the app: Settings → Download my data and Settings → Delete my account. For anything else, write to . You can also complain to the Spanish Data Protection Agency (AEPD), www.aepd.es.

8. Children

Dongi accounts are for people aged 14 or over. Parents can add their children's names to a trip as travellers; children do not need an account.

9. Security

Data is encrypted in transit, access is limited to trip members by database rules, and photos are stored privately and shown only through short-lived links.

10. Changes

If we change this policy in an important way, we will tell you in the app.