Terms of Service
The Dubl service is provided by Empedoc AI LLC, Dover, Delaware, USA. Contact: hello@dubl.fit.
The Dubl app is available in Serbian and English (Account → Language). Where we name a screen or button, the Serbian name from the app is followed by its English name in parentheses.
What Dubl is
Dubl suggests replies to clients in the coach's writing style and guides clients through workouts with the coach's AI voice (Live Training). The coach (on the Elite plan, also an assistant from their team) approves every message before it is sent — Dubl never sends anything in messages on its own, and in Messages the client always sees that replies are suggested by an AI twin (on accounts with a team, also that they are read and approved by the coach or a team member). For messages about pain, injury and health, as well as for photos and videos, the twin does not suggest a reply — the coach replies personally. In Live Training, the voice speaks sentences from the coach's descriptions and the rules the coach has approved in advance, and answers questions automatically within those rules. Dubl is not a medical, nutrition or therapy service; advice is given by the coach, who is responsible for it.
AI voice
The voice in Live Training is synthesized (artificial intelligence) from the coach's recordings, with the coach's written consent, and is labeled as such in the app; in the first workout the voice also says so out loud (and in the next one, if you stop the first workout before completing the first exercise). Automatic answers may be incomplete or wrong. If you feel pain, dizziness or discomfort — stop the workout and contact your coach or a doctor.
Accounts
Coaches and the assistants on their team sign in with an Apple or Google account. A client joins with an invite code received from their coach and sees only that coach's content. A catalog member uses an account tied to the device and trains with the coach they choose. Sharing accounts and accessing other people's data are prohibited. Every account can be deleted in the app: Nalog → Obriši nalog (Account → Delete account); an assistant uses Nalog → Napusti tim (Account → Leave team).
Subscriptions and billing
A coach buys a subscription (Solo, Pro or Elite) in the app or starts for free with the Start plan. A catalog member buys the “Dubl Trening uživo” (Dubl Live Training) subscription, which unlocks workouts with all coaches in the catalog; the member can switch coaches at any time. Clients whom a coach invites with a code pay nothing to Dubl.
Start is free and requires no purchase: up to 3 active clients, the AI twin in messages, training and nutrition plans — without Live Training in the coach's voice and without a catalog profile. A paid plan can be bought later, in the same account. When a paid subscription expires, the account moves to Start: existing clients remain, a new client can be added only when there are fewer than 3 active clients, Live Training is not available to invited clients, and the catalog profile is not shown and does not accept new members (it remains saved and comes back with a paid plan).
All subscriptions are purchased through the App Store or Google Play. The price is shown before purchase, in local currency, including tax. A subscription renews automatically at the end of each period (month or year) unless it is cancelled in the Apple ID or Google Play account settings at least 24 hours before the end of the period. If a free trial is offered, the subscription converts to a paid subscription when the trial ends, unless it is cancelled at least 24 hours before the end of the trial. Cancellation takes effect at the end of the current paid period. Refunds are handled by Apple and Google under their own rules.
Team (Elite plan)
On the Elite plan, the account owner can invite up to 3 assistants with a team code (a code is valid for 7 days and can be used to join once). The owner is notified when someone joins the team; after 10 incorrect codes within 24 hours, joining a team from that account is blocked until the next day. An assistant signs in with their own Apple or Google account, does not pay a subscription and works on behalf of the owner, in the same account: they reply to messages, approve the twin's suggestions, write training and nutrition plans, and see the account's clients — their messages, photos, videos, progress photos and logged lifts. An assistant does not manage the subscription, the voice or the voice rules, the catalog profile, the twin's style (chat imports and questions about the coach's method), the name clients see, or the team.
The owner is responsible for the work of their assistants as for their own: messages approved by an assistant reach clients under the coach's name. The owner chooses whom to give a code to and can remove an assistant at any time (access ends immediately); an assistant can leave the team on their own via Nalog → Napusti tim (Account → Leave team). When the account no longer has the Elite plan, the assistants' access is paused — they do not see clients or messages and receive no notifications until the plan is active again; the owner can still remove them.
Coach's voice and catalog (for coaches)
A coach may create an AI voice only from their own voice, with written consent in the app. By doing so, the coach grants Dubl a non-exclusive, revocable license to use that voice only for workouts of the coach's clients and of members who train with the coach's program, and for a short sample on the coach's profile. The coach is responsible for the rules (playbook) and exercise descriptions they approve. The voice can be revoked at any time; revoking deletes the voice model, the recordings and the synthesized audio.
A catalog profile becomes public only after the coach publishes it and Dubl approves it. Dubl may remove a profile that violates these terms or has been reported as inappropriate.
Revenue share: coaches are entitled to 50% of the net revenue from “Dubl Trening uživo” subscriptions (after App Store and Google Play commissions and taxes), allocated in proportion to the minutes of members' completed workouts on each coach's program. Settlement is monthly; payment is made once the settlement is closed, to the bank account the coach provides. We notify coaches of any change to the percentage at least 30 days in advance.
Content you upload
The coach warrants that they have the right to upload the chats and materials they upload, and that they have informed their clients about it. The content remains the coach's property; Dubl uses it only to provide the service to that coach.
Photos and videos
A client with a personal coach can send the coach a photo or a short video (up to 30 seconds) in Poruke (Messages) and keep progress photos in Napredak (Progress). The sender is responsible for the content: send only what you have the right to send — do not send photos or videos of other people without their permission, or any illegal or inappropriate content. Photos and videos remain yours; Dubl stores them only so that you and your coach (on the Elite plan, also the coach's team) can see them.
The twin (AI) does not see photos or videos and does not suggest a reply to such a message — the coach looks at it and replies personally. A photo or video that has been sent stays in the conversation; you can delete progress photos whenever you want.
Prohibited use
Using Dubl to deceive clients, creating the voice of another person or impersonating another person, sending other people's photos or videos without permission, providing medical diagnoses, harassment, or anything illegal. Violations lead to account termination without a refund.
Liability
The service is provided “as is”. Dubl is not liable for content that a coach or their assistant approves and sends, for photos and videos that users send, for workout rules that a coach approves, or for the consequences of training or nutrition that a client follows. Dubl's liability is limited to the amount paid for the subscription in the last 12 months.
Termination
Users can stop using the service at any time by cancelling their subscription and deleting their account in the app. Dubl may close an account for violating these terms. After termination, data is deleted within the periods set out in the Privacy Policy.
Governing law and disputes
The law of the Republic of Serbia applies. Consumers in the EU also benefit from the mandatory protective rules of their country.
These terms are published in Serbian and English; if the versions differ, the Serbian version prevails.