Vicino Labs
Leggii

Terms of Service

Effective 2026-12-21Version 1.4Operator Vicino Labs

These terms are the agreement between you and Vicino Labs for using Leggii, a sheet music app. By installing and using the app you agree to them.

1. Scope

These terms govern the use of the mobile app Leggii (the “app”) provided by Vicino Labs (the “company”).

2. Provider

The operator's address and contact details are at the end of this document and in the Impressum.

3. Validity and changes

  1. These terms take effect when published in the app or in another way chosen by the company.
  2. The company may change them within the law and will announce the effective date and reason in advance.
  3. If you do not agree to changed terms, you may stop using and delete the app.

4. What the app offers

  1. Free: reading PDF scores and turning pages (including pedals), importing, photo scans, IMSLP search, staff paper, notes and basic symbols, folders, setlists, merging PDFs, metronome, library backup and more
  2. Pro: no banner, no credit line on shared photo scans, your own pens, more symbols, repeat and D.C. jumps, page editing, PDF export with notes, and Pro features added later
  3. The free version shows a banner for welegato, a service of the same company.
  4. AI lesson analysis: on request, lesson notes or a transcript from a recording. It uses AI time (minutes).
  5. welegato ID (optional): signed in, Pro, Plus and AI time follow you to other devices.
  6. Ask Leggii: an AI assistant that answers how the app and plans work and helps with actions such as finding a score (free, up to 30 questions a day).

5. Pro, Leggii Plus and AI time

  1. Free trial: after the first installation you can use the Pro features free for 7 days, plus 30 AI minutes once per device. The trial then ends by itself; there is no automatic payment. Notes, symbols, links and pages made during the trial stay.
  2. Pro: a one-time in-app purchase that is yours for life, with 30 AI minutes every month and a one-time 60-minute welcome bonus. Reinstalling with the same store account restores it with “Restore purchase”.
  3. Leggii Plus: a monthly or yearly subscription with all Pro features and 5 hours of AI time every month. It renews for the same period until cancelled; cancel any time in Google Play (or the App Store) subscriptions. It keeps working until the paid period ends; afterwards you are back to Pro if you bought Pro, otherwise to the free version.
  4. Leggii cloud (Plus): signed in with the welegato ID, scores, ink, folders, setlists, my notes and — if you keep it on — recordings stay the same on the devices of that ID. Plus includes 10 GB; for more space you can switch to the 50 GB plan (Google Play then charges only the difference for the rest of the period; the App Store switches at once and refunds the unused part of the period pro rata). When the cloud is full, only new uploads stop and nothing is deleted. Something deleted on one device is deleted on the other devices and in the cloud too. When Plus ends, new uploads stop, everything can be downloaded for 90 days, and after two reminder emails the cloud files are deleted. The cloud is for syncing your own devices. Others can open only the files you choose with “Send to a welegato chat” below, and only for a limited time. We recommend also keeping important material with “Back up library”.
  5. Launch price: subscribe to Plus by 31 December 2027 and keep that price for as long as you stay subscribed. A different price may apply to new subscriptions after that.
  6. AI time top-ups: 5 or 15 hours, paid once, not a subscription. Usable for 12 months from purchase, whether or not you subscribe to Plus.
  7. How AI time is counted: lesson notes use 1 minute per recording minute, transcripts 3 minutes; the cost is shown before starting. Monthly minutes are used first, then top-ups. Monthly minutes do not carry over. AI time has no cash value and cannot be transferred.
  8. welegato ID and purchases: when you sign in, purchases and AI time are linked to that ID. A purchase belongs to the first ID it was linked to.
  9. Prices are shown at checkout. Payment and refunds follow each store's rules and process. Refunds for App Store purchases are handled by Apple and can be requested at reportaproblem.apple.com; the company cannot refund App Store payments itself. For digital content, if you agree that use starts immediately, your right of withdrawal may end as far as the law allows; the store's refund process remains available.
  10. We will not remove core Pro features from paying users without good reason. Changes to monthly AI time or top-up terms are announced in advance and do not apply to periods already paid or time already bought.

6. Scores and copyright

  1. You are responsible for respecting copyright in the scores you import, scan or share.
  2. Scores from IMSLP are provided on IMSLP's terms, and copyright terms differ by country. The app flags editions that may still be protected in the EU, but the final judgement is yours.
  3. Without Leggii cloud your scores stay on your device. With the cloud they are stored to keep your own devices in sync; the company does not look at their contents.

7. Recordings

  1. The recording feature is for keeping lessons, rehearsals, ensembles and practice for your own practice and notes.
  2. If other people's voices or playing are recorded (a teacher, conductor or fellow musicians, for example), you must get their consent before recording. You are responsible for recording, or using a recording, without consent.
  3. Before you send a recording to others or publish or distribute it, you must make sure the people recorded agree and that copyright and performers' rights in the music allow it.
  4. Recordings are stored on your device, and in Leggii cloud only if you turn on recordings in the cloud. An AI analysis you ask for handles them only briefly. The company does not keep the recordings on your device and cannot restore a lost recording. Keep important recordings safe with “Back up library” or by sending them.

8. AI lesson analysis and Ask Leggii

  1. Results of the AI lesson analysis and Ask Leggii are made by AI and can be wrong or incomplete. They do not replace what was said in the lesson or rehearsal; please check what matters.
  2. Use the AI lesson analysis only for recordings you may make, with the consent of the people recorded.
  3. Ask Leggii is free for up to 30 questions a day per device. We may limit use to prevent abuse.
  4. Suggested actions that use AI time run only after you confirm them. The assistant never pays or buys for you.

9. welegato ID

  1. Signing in is optional; all basic features of Leggii work without it.
  2. The ID is an account of welegato, run by the same company. Creating and using it is also governed by the welegato terms of use; only people aged 16 or over can sign in.
  3. You can delete the ID in Settings › welegato ID › Manage ID. It is then removed from all Vicino Labs apps; a Leggii Plus subscription must be cancelled separately in the store to stop payments.
  4. How to end each contract is collected in Settings › Terms & policies › Cancel contracts (Verträge hier kündigen).

10. Send to a welegato chat

  1. Signed in with the welegato ID, you can send score PDFs, AI lesson-note PDFs and recordings (audio) in your Leggii cloud to someone you chat with on welegato. The file is not copied; they can open it for 7 days from sending. Ink and AI analysis results are not included. You can turn sharing off at any time in the welegato chat.
  2. You must hold the rights needed for what you send, including copyright in the score and the performance and the consent of the people recorded. Scores or recordings scanned or copied without the rights holder's permission may not be sent. The sender is responsible for the content of the file and the rights in it; the company does not check files in advance.
  3. A reported file is closed at once. If, after review, the company finds an infringement or illegal content, it may keep the sharing blocked and restrict use under the welegato terms.
  4. To prevent misuse you can send up to 20 files a day and up to 500 MB at a time. The company may change these limits.

11. welegato and external services

The app links to and uses external services such as welegato, IMSLP, Google Play and the App Store. They are separate from the app and governed by their own terms and privacy policies. The company is not responsible for their content or availability.

If you got the app from the App Store, Apple's standard Licensed Application End User License Agreement (EULA) also applies. Where it differs from these terms, these terms prevail, without reducing the rights Apple's standard agreement gives you. The company, not Apple, is responsible for the app and its support.

12. Intellectual property

The company holds the rights to the app's logo, the name “Leggii”, its design, texts and source code. You may not copy, distribute, transmit, publish, reverse-engineer or create derivative works without prior written consent.

13. Your obligations

  1. Do not reverse-engineer or decompile the app or circumvent payment.
  2. Do not disrupt the app's normal operation.
  3. Comply with applicable law and these terms.
  4. Do not send files such as scores or recordings to a welegato chat without the rights needed (including scores or recordings scanned or copied without the rights holder's permission).

14. Changes and discontinuation

The company may change or discontinue all or part of the app for operational or technical reasons and will announce this in advance unless urgent. Changes to external services (such as IMSLP) may limit related features.

15. Liability

  1. The company is liable without limitation for intent and gross negligence, for injury to life, body or health, and under the Product Liability Act.
  2. For slight negligence the company is liable only for breach of essential contractual obligations, limited to the typical damage foreseeable when the contract was made.
  3. Without the cloud, scores and notes are stored only on your device. To protect against loss of the device, deletion or reset, please make your own backups with “Back up library”.

16. Governing law and jurisdiction

German law applies. Mandatory consumer-protection rules of the country where you, as a consumer, habitually reside (e.g. an EU member state) remain unaffected. Otherwise the courts at the company's seat (Dortmund, Germany) have jurisdiction.

17. Contact

For questions about these terms, please contact us.

Trading name
Vicino Labs (sole proprietorship, Einzelunternehmen)
Owner
Jeong-Hwan Lee
Address
Ruhrallee 41, 44139 Dortmund, Germany
Email
contact@vicinolabs.com
Impressum
vicinolabs.com/impressum
These terms are effective from 21 December 2026 (version 1.4, announced 10 November 2026 — version 1.3, announced 9 November 2026, plus App Store details). Until then version 1.2 (6 November 2026) applies. Previous versions 1.1: 5 November 2026, 1.0: 22 October 2026.Privacy Policy →Impressum