Invitation programme
This is a translation of the Italian version, which prevails in case of discrepancy.
Digital Twin is in early access and you can only join by invitation. People already using the app can bring a few friends along: here is how it works. Last updated: 6 October 2026.
Who can invite
Every user who has connected intervals.icu to their account has 3 invitations, sent from the app (Me › Invite friends). Coaches can have more invitations, to bring in their athletes: in that case the quota is agreed with us.
How an invitation works
- Your friend receives an email with a link and a personal code, tied to their email address: they get in straight away, without going through the waiting list.
- The invitation is valid for 14 days. If it expires without your friend signing up, the invitation becomes available again.
- You cannot invite someone who already has an account or a still-valid invitation.
The reward
For every invited friend who signs up and connects intervals.icu (that is, actually starts using the app) you get 1 free month of the future paid version of Digital Twin.
- Months add up: with 3 active friends you get 3 free months.
- They apply when the paid version becomes available; while the app is free there is nothing to redeem.
- Once earned, a month stays yours even if your friend later disconnects intervals.icu or deletes their account.
- Months cannot be converted into money or transferred.
- If you delete your account, the months you have earned are lost.
The reward depends only on your friend using the app: it is not tied to their data, which remains theirs and is processed according to the app privacy notice.
Fair use
Invite people you know who may be interested. Invitations to fake addresses or addresses created to obtain free months do not qualify for the reward, and we may suspend the programme for anyone who misuses it.
Changes
We may change or close the invitation programme; months already earned up to that point remain valid. Questions: info@digital-twins.app.