How does the on-device intelligence work?

Strenua uses CoreML to process your workout data directly on your iPhone's Neural Engine. No personal health data is ever sent to a cloud server. Your training intelligence lives in your pocket, not on someone else's servers.

Is there an Android version?

Currently, Strenua is exclusive to iOS to leverage Apple Silicon's Neural Engine for our on-device intelligence models. This isn't a business decision — it's a technical one. The on-device processing requires specific hardware capabilities.

What equipment do I need?

Whatever you have access to. Strenua adapts your programming based on your available equipment profile — whether you're in a fully equipped commercial gym, a home setup with dumbbells, or training bodyweight only.

Does it integrate with Apple Health?

Yes. Strenua reads and writes to HealthKit, seamlessly integrating with your Apple Watch and other health apps to build a complete picture of your training load and recovery status.

What makes the programming science-based?

Every workout is built on periodization principles: progressive overload, volume landmarks, RIR-based autoregulation, and recovery modeling. No random workouts of the day. Each session has a purpose in your training block.

Terms of Service

Agreement to Terms

By downloading, installing, or using the Strenua application ("the App"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, do not use the App.

Strenua is developed and maintained by Strenua ("we," "us," or "our"). These Terms govern your use of the Strenua iOS application and the Strenua website at strenua.app.

Description of Service

Strenua is an intelligent workout programming application for iOS. The App uses on-device intelligence to generate personalised strength training programs based on exercise science principles including periodisation, progressive overload, volume landmarks, and recovery modelling.

All intelligence processing occurs locally on your device using Apple's CoreML framework. Workout generation and training sessions function offline. An internet connection is only required if you choose to sign in for sync or when the App checks subscription status with the App Store.

Account Registration and Authentication

You may use Strenua without creating an account. If you choose to sign in with Apple or Google, the account is used to sync your purchases and training data across supported devices. By creating an account, you:

Confirm that you are providing accurate authentication information
Accept responsibility for all activity under your account
Agree not to share your account access with others
Acknowledge that your account is personal and non-transferable

We use Apple Sign In and Google Sign In as our authentication providers. We do not store your password. Authentication is handled entirely by Apple or Google's secure identity services. We receive only the minimum information necessary to identify your account: a unique user identifier, your name (if you choose to share it), and your email address (or Apple's private relay email).

You may delete your account at any time through the App's settings. Account deletion will cancel any active subscription and remove your account data from our authentication system. On-device training data remains on your device until you uninstall the App.

Eligibility

You must be at least 17 years of age to use Strenua. By using the App, you represent that you meet this age requirement. The App is designed for individuals who are physically capable of performing strength training exercises. Consult a physician before beginning any exercise programme.

Subscription Terms

Pricing and Billing

Strenua operates on a subscription model with the following plans. All billing is handled through Apple's App Store.

Monthly Plan: £5.99 per month, billed monthly.
Annual Plan: £69.99 per year, billed as a single annual payment (equivalent to approximately £5.83/month).

By subscribing, you agree to the following:

Free Trial: New subscribers receive a free trial period. You will not be charged during the trial. If you do not cancel before the trial ends, your subscription will automatically convert to a paid subscription at the stated price for the plan you selected.
Recurring Billing: Your subscription automatically renews at the end of each billing period (monthly or annually) unless cancelled at least 24 hours before the end of the current billing period. Payment is charged to your Apple ID account.
Price Changes: We may change subscription pricing with reasonable notice. Any price increase will not apply until your next renewal period after the notice. You may cancel at any time if you do not agree with the new pricing.
Currency: Pricing may vary by region based on Apple's currency conversion. The GBP prices stated above are the base prices; your local equivalent is determined by Apple.

Cancellation

You may cancel your subscription at any time through your Apple ID account settings (Settings → Apple ID → Subscriptions). Upon cancellation:

You retain access to premium features until the end of your current billing period (month or year, depending on your plan)
Your on-device training data is not affected by cancellation
No partial refunds are issued for unused portions of a billing period
You may re-subscribe at any time to either the monthly or annual plan

Refunds

Refund requests are handled by Apple in accordance with their refund policy. We do not process refunds directly. If you believe you are entitled to a refund, contact Apple Support.

Free vs. Paid Features

Non-subscribers may complete up to three workouts before a subscription is required. An active subscription unlocks continued access to Strenua's core intelligent programming features. Optional account sign-in is not required to purchase or restore a subscription on the current device.

Medical Disclaimer

Strenua is not a medical device and does not provide medical advice. The workout programmes generated by the App are based on general exercise science principles and should not be considered a substitute for professional medical advice, diagnosis, or treatment.

Consult your physician before starting any new exercise programme, especially if you have pre-existing medical conditions, injuries, or are recovering from surgery
Stop exercising immediately if you experience pain, dizziness, shortness of breath, or any unusual symptoms during a workout
The system is not infallible — exercise recommendations are generated algorithmically and may not account for every individual's specific medical history or physical limitations
You assume all risk associated with performing the exercises suggested by the App

We expressly disclaim any liability for injuries, health complications, or adverse outcomes that may result from following workout programmes generated by the App.

Acceptable Use

You agree to use Strenua only for its intended purpose of personal workout programming and tracking. You agree not to:

Reverse engineer, decompile, or disassemble the App or its intelligence models
Attempt to extract, copy, or redistribute the CoreML models bundled with the App
Use the App to generate content for competing products or services
Redistribute or resell workout programmes generated by the App as your own coaching services without attribution
Circumvent any security features, access controls, or subscription mechanisms in the App
Create multiple accounts to abuse free trial offers
Share account credentials with others or allow unauthorised access to your subscription

Intellectual Property

All intellectual property rights in the Strenua application, including but not limited to the source code, intelligence models, design system, user interface, documentation, and branding, are owned by Strenua and are protected by applicable intellectual property laws.

The workout programmes generated by the App for your personal use are yours to follow and reference. However, the underlying algorithms, models, and systems that generate those programmes remain our intellectual property.

Apple App Store Terms

Strenua is distributed through the Apple App Store. Your use of the App is also subject to Apple's standard Licensed Application End User License Agreement. In the event of a conflict between these Terms and Apple's EULA, Apple's terms shall prevail with respect to App Store distribution matters.

You acknowledge that:

Apple has no obligation to provide maintenance or support for the App
Apple is not responsible for any product warranties, whether expressed or implied
Apple is not responsible for addressing any claims relating to the App
Apple is a third-party beneficiary of these Terms

Updates and Changes

We may update the App from time to time to improve functionality, fix bugs, update intelligence models, or comply with platform requirements. We reserve the right to:

Modify or discontinue features of the App at any time
Update the intelligence models that generate workout programmes
Change the App's pricing or subscription structure with reasonable notice
Update these Terms with changes posted to our website

Continued use of the App after changes to these Terms constitutes acceptance of the updated Terms.

Limitation of Liability

To the maximum extent permitted by applicable law, Strenua and its developers, officers, and affiliates shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to:

Physical injuries sustained during workouts
Loss of training data due to device failure
Inaccurate workout recommendations
Interruption of training programmes
Any damages arising from the use or inability to use the App
Loss of access due to authentication service outages (Apple or Google)

Our total liability for any claims arising under these Terms shall not exceed the amount you paid for the App in the twelve months preceding the claim.

Warranty Disclaimer

The App is provided "as is" and "as available" without warranties of any kind, either express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, and non-infringement.

We do not warrant that:

The App will meet your specific training requirements
The intelligently generated programmes will produce specific fitness outcomes
The App will be uninterrupted, timely, secure, or error-free
Any errors in the App will be corrected
Authentication services provided by Apple or Google will be available at all times

Indemnification

You agree to indemnify, defend, and hold harmless Strenua, its developers, officers, and affiliates from any claims, damages, losses, or expenses (including reasonable legal fees) arising from your use of the App or violation of these Terms.

Governing Law

These Terms shall be governed by and construed in accordance with the laws of England and Wales. Any disputes arising under or in connection with these Terms shall be subject to the exclusive jurisdiction of the courts of England and Wales.

Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary so that the remaining provisions of these Terms remain in full force and effect.

Contact

If you have questions about these Terms of Service, contact us at:

Email: legal@strenua.app