What is Lavni and how does it work?

Lavni is a digital time capsule app that allows you to send messages and media into the future. You write letters or upload files, specify a future date, and seal the capsule. It remains locked and inaccessible until that date arrives.

Is my data secure in the time capsule?

Yes. Lavni uses industry-standard AES-256 client-side encryption and strict database Row-Level Security (RLS). Content is encrypted before being sent to the server, meaning nobody—not even Lavni administrators—can read your messages before the release date.

Can I open my time capsule early?

For Private Capsules, a secure 6-digit PIN is generated upon sealing. This PIN acts as a cryptographic bypass key and is the only way to unlock the capsule before its scheduled date. Keep it safe, as it cannot be reset or recovered by anyone, including the support team.

How do Collaboration Capsules work?

Collaboration Capsules are designed for group events like weddings, birthdays, or farewells. You share a link or a printed QR code. Contributors can submit messages, photos, and videos without creating an account. The capsule seals automatically when the contribution window ends and opens for all participants on the target date.

What is Lavni's refund and cancellation policy?

Due to the permanent allocation of encrypted cloud resources upon sealing, all purchases are final and non-refundable. Under EU consumer protection regulations, you explicitly agree that the service begins immediately upon sealing and you waive your 14-day right of withdrawal.

Lavni — Digital Time Capsules

Lavni is a highly secure digital time capsule application designed to preserve letters, memories, photos, and videos for the exact future moments they belong to. Envoyez des souvenirs dans le futur.

Features & Technological Architecture

Private Capsules: Personal archives, letters, and files sealed by a single creator and locked securely until the date arrives. Accessible early only with a secret PIN.
Collaboration Capsules: Ideal for birthdays, departures, and group events. Collect memories and media from up to 100 people via a shared link/QR code. Seals and opens automatically.
Zero-Knowledge Encryption: All message text and media files are encrypted locally on the user's device utilizing industry-standard AES-256 before upload.
Row-Level Security (RLS): Restricts access to base schemas, ensuring data tables can only be queried by verified authorized tokens.

Pricing & Collaboration Plans

Simple (Free): Text-only time capsule protected by a secret PIN (50,000 characters).
Plus (2.99 €): Text letters with high-definition photos (10 MB).
Memory (4.99 €): Rich multimedia archives with video, audio, and photo uploads (50 MB video limits).
Legacy (9.99 €): Multi-decade priority archiving to pass memories to future generations.
Collaboration S (5.99 €): Group time capsules with photo/video contributions from up to 15 people.
Collaboration L (12.99 €): Unlimited-size group capsules with contributions from up to 100 people.

Privacy, UGC Moderation, and Regulatory Compliance

We comply fully with GDPR, CCPA, COPPA, and major app store guidelines. All uploaded time capsule files are encrypted and completely inaccessible to our team or third parties. We enforce a strict 24-hour response window for reporting objectionable content in collaborative spaces (report@lavni.fr). Age restrictions apply (minimum 13 in the US, 16 in the EU). All sales are final, with an explicit waiver of the 14-day EU consumer withdrawal right upon capsule sealing. Read our Privacy Policy and Terms of Service for details.