Terms of Service

1. The Service

Strena is a web-based subscription software service for strength training and powerlifting. The Service provides training programming, including suggested loads, sets, reps, session progression, and training mode changes, based on user inputs and logged training outcomes.

The Service is software only. The Service is not medical care, healthcare, physical therapy, rehabilitation, coaching, supervision, emergency support, or any other professional service. Strena does not provide medical advice, diagnosis, treatment, rehabilitation advice, injury prevention advice, injury assessment, or any other professional advice.

The Service may generate workout recommendations and related outputs using deterministic programming logic and user-provided information. Strena does not guarantee that any recommendation, output, progression, load, set, rep scheme, or training mode is correct, suitable, safe, effective, complete, or appropriate for you.

2. Eligibility

You may use the Service only if:

• you are at least 18 years old, or the age of legal majority in your jurisdiction, whichever is higher;
• you are legally capable of entering into a binding agreement; and
• your use of the Service is not prohibited by applicable law.

The Service is intended for individual consumers. It is not intended for children.

3. Account Registration and Security

To use certain features of the Service, you must create an account. Authentication and account access may be provided through third-party identity providers, including Clerk, and may involve email sign-in, passwordless login, or OAuth providers.

You agree to:

• provide accurate, complete, and current registration information;
• keep your credentials secure and confidential;
• maintain the accuracy of your account information;
• accept full responsibility for all activity under your account; and
• notify us promptly at privacy@strena.fit if you suspect unauthorized access or any security incident involving your account.

We may suspend, restrict, or terminate your account at any time if we believe your account is insecure, your information is inaccurate, your use presents legal, operational, or security risk, or you have violated these Terms.

4. Subscriptions, Trial, Billing, and Cancellation

4.1 Free Trial

Strena may offer a free trial. If offered, the trial length and eligibility terms will be presented at signup, onboarding, or checkout. No credit card is required for the free trial unless we state otherwise.

Trial availability, eligibility, start date, duration, and expiration may be tracked server-side and determined in our sole discretion. We may limit, revoke, modify, or discontinue trial offers at any time.

4.2 Paid Subscription

After the free trial ends, continued access to paid features requires an active subscription. Unless otherwise stated at the time of purchase, the subscription price is €4.45 per month.

4.3 Auto-Renewal

Your subscription automatically renews for successive billing periods unless you cancel before the renewal date. By subscribing, you authorize us and our payment processor to charge the applicable recurring subscription fees and any applicable taxes using your selected payment method.

4.4 Payment Processing

Payments are processed by third-party providers, including Stripe. By purchasing a subscription, you agree that payment processing is subject to the applicable third-party terms and policies of the payment processor.

We are not responsible for payment processor errors, outages, banking issues, issuer decisions, payment authorization failures, chargeback handling, or third-party billing malfunctions.

4.5 Cancellation

You may cancel your subscription through your account settings or by contacting us at privacy@strena.fit. Unless required by applicable law, cancellation will take effect at the end of the current billing period, and you will retain access until then.

4.6 No Refunds

Except where required by applicable law, all fees are non-refundable once charged, including partially used billing periods, and Strena does not provide refunds, credits, or prorated reimbursements.

4.7 Price and Plan Changes

We may change pricing, billing structure, trial terms, subscription tiers, feature availability, and payment terms at any time in our sole discretion. Any such changes will apply as stated by us and, where required by law, after any legally required notice period.

5. User Inputs and Service Outputs

The Service may ask you to provide or confirm information such as:

• working weights for squat, bench press, and deadlift;
• weight unit preferences;
• minimum plate size preferences;
• workout completion information;
• RPE and other subjective training feedback;
• form breakdown and bar speed indicators;
• lower-back-related and recovery-related flags;
• equipment availability; and
• exercise preferences.

The Service generates recommendations based on the information you provide and the internal programming logic of the Service.

You acknowledge and agree that:

• all recommendations depend on the completeness, accuracy, and timeliness of your inputs;
• the Service does not independently verify your inputs or physical condition;
• the Service may generate outputs that are wrong, unsuitable, unsafe, ineffective, stale, incomplete, or inappropriate;
• you are solely responsible for reviewing every recommendation before acting on it; and
• you are solely responsible for deciding whether to perform any lift, exercise, set, rep scheme, session, or progression.

6. Health, Safety, and No Medical Advice

IMPORTANT: USE OF THE SERVICE IS ENTIRELY AT YOUR OWN RISK.

The Service is not a medical service, healthcare service, medical device, physical therapy service, rehabilitation service, coaching service, personal training service, or emergency service. Strena does not provide medical advice, medical opinions, diagnosis, treatment, rehabilitation guidance, injury prevention advice, injury assessment, or any professional health-related advice of any kind.

Nothing in the Service is intended to be, and must not be understood as, medical advice, diagnosis, treatment, medical clearance, or a representation that any exercise, lift, load, set, rep scheme, training mode, or recommendation is safe or appropriate for you.

Strength training, resistance training, and powerlifting involve inherent and significant risks, including pain, soreness, strain, fatigue, overtraining, illness, dizziness, aggravation of existing conditions, musculoskeletal injury, tendon injury, nerve injury, joint injury, spinal injury, permanent disability, and death.

You are solely responsible for determining whether you are physically, medically, and mentally able to train, whether your environment and equipment are safe, whether you have appropriate supervision or spotting, and whether any recommendation generated by the Service is suitable for you.

Before starting or continuing any training program, and before relying on any recommendation generated by the Service, you should consult a qualified physician or other appropriate licensed medical professional, especially if you have any injury, pain, chronic condition, back issue, cardiovascular issue, neurological symptom, reduced mobility, prior surgery, illness, pregnancy, postpartum condition, or any reason to question whether exercise is safe for you.

If you experience or feel any pain, discomfort, weakness, dizziness, nausea, shortness of breath, chest pain, back pain, numbness, tingling, loss of coordination, unusual fatigue, form breakdown, illness, or any other symptom, sensation, or condition that could indicate risk or harm, stop immediately and consult a qualified physician or other licensed medical professional.

If you are unsure whether to perform a recommended lift or exercise, do not perform it unless and until you are satisfied it is safe for you.

Strena does not monitor your form, movement quality, recovery status, technique, supervision, spotting arrangements, medical condition, readiness, or actual execution. No output of the Service should ever be treated as a substitute for medical judgment, professional coaching judgment, or your own responsibility and judgment.

By using the Service, you acknowledge and agree that you voluntarily assume all risks associated with exercise, lifting, training, and reliance on the Service, whether known or unknown, foreseeable or unforeseeable, to the maximum extent permitted by law.

7. Assumption of Risk and Sole Responsibility

You acknowledge and agree that:

• you use the Service voluntarily and entirely at your own risk;
• you are solely responsible for your body, health, safety, technique, equipment, supervision, spotting, training environment, and all training decisions;
• you are solely responsible for deciding whether to begin, continue, modify, pause, or stop any exercise or training session;
• Strena cannot verify whether you are injured, ill, fatigued, medically cleared, properly equipped, or adequately supervised;
• any recommendation generated by the Service may be inappropriate, unsafe, ineffective, or based on inaccurate assumptions or inputs; and
• you assume full responsibility for all consequences arising from your use of, misuse of, reliance on, or refusal to follow the Service.

8. No Professional Relationship

Your use of the Service does not create any physician-patient relationship, therapist-patient relationship, coach-client relationship, trainer-client relationship, fiduciary relationship, employment relationship, agency relationship, partnership, or joint venture between you and Strena.

9. User Responsibilities

You agree that you will:

• use the Service only for lawful purposes;
• provide truthful, accurate, and current information;
• independently assess the safety and suitability of every workout and recommendation;
• stop training when appropriate based on your own judgment and circumstances;
• consult a qualified physician or other licensed professional where appropriate;
• maintain safe equipment, environment, and supervision where necessary; and
• comply with these Terms and all applicable laws.

You agree that you will not:

• misuse the Service;
• interfere with the operation or security of the Service;
• attempt unauthorized access to any account, system, or data;
• copy, scrape, reverse engineer, decompile, or exploit the Service except as expressly permitted by law;
• use bots or automation in a way that burdens or harms the Service;
• resell, sublicense, lease, or commercially exploit the Service without our prior written consent;
• upload malicious code or harmful content;
• use the Service fraudulently or unlawfully; or
• impersonate another person or misrepresent your identity.

10. Privacy and Data

Your use of the Service may involve the collection and processing of personal data. Our handling of personal data is described in our Privacy Policy.

The Service may process and store data including account metadata, training logs, set logs, lift outcomes, progression state, equipment preferences, exercise selections, and subscription-related identifiers.

You may request account deletion by contacting us at privacy@strena.fit or by using any deletion functionality we provide. We may delete, anonymize, or retain account-related information as required or permitted for legal, tax, accounting, fraud-prevention, security, dispute-resolution, backup, or compliance purposes.

Deletion of your account does not automatically cancel an active subscription unless we expressly state otherwise in the deletion flow. You remain responsible for canceling any paid subscription separately unless applicable law requires otherwise.

11. Third-Party Services

The Service may rely on, integrate with, or be provided through third-party providers, including without limitation:

• Clerk, for authentication and identity services;
• Stripe, for billing and subscription management;
• Turso or related database services, for storage and infrastructure; and
• Vercel or related hosting and compute providers, for hosting and serverless infrastructure.

The Service may also depend on browsers, devices, networks, OAuth providers, payment networks, card issuers, cloud providers, and other third-party systems.

To the maximum extent permitted by law, Strena is not responsible for any third-party service, including its availability, uptime, security, legality, content, acts, omissions, failures, outages, policies, pricing, interruptions, data handling, or performance.

Your use of third-party services may be subject to separate third-party terms and privacy policies.

12. Intellectual Property

The Service and all related software, code, logic, algorithms, interfaces, designs, branding, trademarks, editorial content, exercise library content, text, graphics, and other materials are owned by or licensed to Strena and are protected by intellectual property and other applicable laws.

Subject to these Terms, Strena grants you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable license to access and use the Service for your own personal, non-commercial use.

You may not copy, reproduce, modify, distribute, publish, create derivative works from, reverse engineer, sell, license, or otherwise exploit any part of the Service except as expressly permitted by us in writing or required by law.

13. User Content and Feedback

To the extent you provide logs, comments, preferences, exercise selections, support messages, suggestions, or other content through the Service (“User Content”), you retain any rights you may have in that content.

You grant Strena a non-exclusive, worldwide, royalty-free, transferable, sublicensable license to host, store, reproduce, adapt, process, use, and display User Content as necessary to operate, maintain, improve, secure, support, analyze, and provide the Service.

If you provide feedback, suggestions, ideas, or feature requests, you agree that Strena may use them without restriction, attribution, or compensation to you.

14. Admin Tools and Editorial Control

Strena may maintain internal administrative tools for managing users, exercises, content, programming logic, and operational settings.

We reserve the right, at any time and in our sole discretion, to edit, add, remove, disable, reorder, update, or discontinue any exercise, exercise library item, editorial content, workflow, rule, recommendation format, programming logic, or feature.

We have no obligation to preserve any particular content, logic, recommendation style, feature set, or user experience.

15. Changes to the Service

Strena may, at any time and in its sole discretion, with or without notice and without liability to you, to the maximum extent permitted by law:

• add, remove, suspend, restrict, or discontinue any feature, function, content, exercise, training mode, workflow, subscription offering, or part of the Service;
• change the design, interface, structure, logic, behavior, output format, or user flow of the Service;
• modify how recommendations are generated, displayed, or delivered;
• impose usage limits, eligibility restrictions, feature gating, or regional restrictions;
• change or discontinue trials, plans, pricing, or billing structures;
• change supported devices, languages, integrations, vendors, or infrastructure;
• correct or decline to correct any bugs, defects, or errors; and
• suspend or discontinue the Service in whole or in part.

Strena has no obligation to continue offering any specific feature, content, logic, language version, compatibility standard, or level of service.

Your continued use of the Service after any change constitutes acceptance of that change to the extent permitted by law.

16. Service Availability

Strena does not guarantee that the Service will be available at any time or location, or that it will be uninterrupted, error-free, secure, or free of bugs, delays, outages, or data loss.

The Service may be unavailable due to maintenance, updates, vendor outages, network failures, software defects, force majeure events, security incidents, or reasons inside or outside our control.

We may suspend access for maintenance, upgrades, abuse prevention, legal reasons, security concerns, operational needs, or any other reason in our sole discretion.

17. Disclaimer of Warranties

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE SERVICE IS PROVIDED “AS IS,” “AS AVAILABLE,” “WITH ALL FAULTS,” AND WITHOUT ANY WARRANTIES, REPRESENTATIONS, CONDITIONS, OR GUARANTEES OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, STRENA EXPRESSLY DISCLAIMS ALL WARRANTIES, REPRESENTATIONS, CONDITIONS, AND GUARANTEES, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT, ACCURACY, COMPLETENESS, RELIABILITY, PERFORMANCE, AVAILABILITY, SAFETY, QUIET ENJOYMENT, AND THAT THE SERVICE WILL MEET YOUR NEEDS OR EXPECTATIONS.

Without limiting the foregoing, Strena makes no warranty, representation, condition, or guarantee that:

• the Service will be available, uninterrupted, timely, secure, stable, or error-free;
• the Service will be free from bugs, defects, vulnerabilities, or harmful components;
• any recommendation, calculation, algorithm, output, progression, training mode, or suggested load will be correct, useful, safe, effective, or suitable for you;
• any data, logs, settings, history, preferences, account state, or subscription information will be accurate, preserved, recoverable, or free from loss;
• the Service will achieve any fitness, strength, performance, recovery, or other result;
• the Service will remain available in its current form or at all; or
• any defect or issue will be corrected.

You acknowledge that the Service depends on user-provided information and third-party systems, and that inaccuracies, omissions, stale data, sync failures, outages, calculation errors, downtime, interruptions, data loss, billing problems, authentication failures, and other malfunctions may occur.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, YOU USE AND RELY ON THE SERVICE ENTIRELY AT YOUR OWN RISK.

Nothing in these Terms excludes any warranty or right that cannot lawfully be excluded under applicable law.

18. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, STRENA, ITS AFFILIATES, LICENSORS, SERVICE PROVIDERS, OFFICERS, DIRECTORS, EMPLOYEES, CONTRACTORS, AND AGENTS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, GOODWILL, BUSINESS OPPORTUNITY, OR ANTICIPATED SAVINGS, ARISING OUT OF OR RELATING TO THE SERVICE, YOUR USE OF OR INABILITY TO USE THE SERVICE, OR ANY TRAINING ACTIVITY YOU UNDERTAKE.

To the maximum extent permitted by applicable law, this exclusion applies to any loss or damage arising from or relating to:

• personal injury, physical injury, pain, illness, aggravated injury, disability, or death;
• exercise activity, lifting activity, training sessions, or reliance on any recommendation generated by the Service;
• inaccurate or incomplete inputs, logs, flags, or user-provided data;
• programming changes, calculation logic, recommendation logic, progression logic, or algorithmic outputs;
• service outages, downtime, interruptions, bugs, defects, errors, latency, security incidents, or data loss;
• account issues, deletion, access issues, authentication problems, or unauthorized access;
• subscription, trial, billing, renewal, cancellation, tax, chargeback, or payment processor issues;
• loss of training history, settings, preferences, or content;
• acts or omissions of third-party providers; and
• any decision you make to perform, skip, change, continue, or stop any exercise or session.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, STRENA’S TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THE SERVICE OR THESE TERMS SHALL NOT EXCEED THE TOTAL AMOUNT PAID BY YOU TO STRENA FOR THE SERVICE DURING THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE CLAIM. IF YOU HAVE PAID NO AMOUNTS TO STRENA DURING THAT PERIOD, STRENA SHALL HAVE NO MONETARY LIABILITY TO YOU TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, YOUR SOLE AND EXCLUSIVE REMEDY FOR DISSATISFACTION WITH THE SERVICE IS TO STOP USING THE SERVICE AND CANCEL YOUR SUBSCRIPTION.

Nothing in these Terms excludes or limits liability to the extent such exclusion or limitation is prohibited by applicable law.

19. Indemnity

To the maximum extent permitted by applicable law, you agree to defend, indemnify, and hold harmless Strena, its affiliates, licensors, service providers, officers, directors, employees, contractors, and agents from and against any claims, demands, actions, losses, liabilities, damages, judgments, settlements, costs, and expenses, including reasonable legal fees, arising out of or relating to:

• your use or misuse of the Service;
• your training activities;
• your violation of these Terms;
• your violation of applicable law; or
• your negligence, recklessness, unsafe conduct, or reliance on the Service.

This section does not apply to the extent a claim is finally determined to result directly from liability that cannot legally be excluded.

20. Suspension and Termination

Strena may suspend, restrict, disable, or terminate your account or access to all or any part of the Service at any time, for any reason or no reason, with or without notice, and without liability to you, to the maximum extent permitted by law.

This may include suspension or termination for suspected misuse, fraud, abuse, security issues, legal risk, payment issues, inactivity, operational changes, vendor issues, infrastructure changes, support burden, or product decisions.

You may stop using the Service at any time. Termination of access does not relieve you of any payment obligations already incurred.

Sections that by their nature should survive termination will survive, including sections relating to fees, intellectual property, disclaimers, limitation of liability, indemnity, dispute resolution, and governing law.

21. Changes to These Terms

We may modify these Terms at any time in our sole discretion. If we make changes, we may provide notice by updating the Effective Date, posting the revised Terms through the Service, emailing you, or by any other reasonable method.

The revised Terms become effective on the date stated by us. By continuing to access or use the Service after the revised Terms become effective, you agree to be bound by them.

If applicable law requires us to provide specific notice or obtain specific consent for certain changes, we will do so only to the extent required by law.

22. Language

The Service may be available in multiple languages, including English, Finnish, Portuguese, and Spanish. Unless applicable law requires otherwise, the English version of these Terms controls in the event of any conflict or inconsistency between translations.

23. Governing Law and Jurisdiction

These Terms and any dispute, claim, or controversy arising out of or relating to these Terms or the Service are governed by applicable law, without regard to conflict of laws principles.

If you are a consumer residing in a jurisdiction that grants you non-waivable rights to bring claims in your local courts or under your local laws, nothing in these Terms limits those rights to the extent such limitation is prohibited by law.

24. Severability

If any provision of these Terms is held unlawful, invalid, or unenforceable, that provision will be enforced to the maximum extent permitted, and the remaining provisions will remain in full force and effect.

25. No Waiver

Our failure to enforce any provision of these Terms is not a waiver of that provision or any other provision.

26. Assignment

You may not assign, transfer, delegate, or sublicense any of your rights or obligations under these Terms without our prior written consent. We may assign, transfer, or delegate these Terms and any rights or obligations under them at any time in our sole discretion.

27. Entire Agreement

These Terms, together with our Privacy Policy and any additional terms expressly incorporated by reference, constitute the entire agreement between you and Strena regarding the Service and supersede all prior or contemporaneous understandings, communications, and proposals relating to the Service.

28. Contact Information

If you have questions about these Terms or the Service, contact: