Terms of Service

By downloading, installing, or using SubZero Gym (the "App"), you agree to these Terms of Service.

ShadowPing LLC grants you a limited, non-exclusive, non-transferable, revocable license to use the App for personal, non-commercial use on supported iOS devices.

SubZero Gym is designed to generate personalized workout plans using AI. The App provides fitness guidance and training suggestions. You are responsible for how you use the generated workout plans and the App is not liable for any injuries, health issues, or other outcomes resulting from following the workout plans.

Important: SubZero Gym is not a substitute for professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider or fitness professional before starting any exercise program, especially if you have any health conditions, injuries, or concerns. Stop exercising immediately if you experience pain, dizziness, or discomfort.

Important: SubZero Gym may provide AI-generated supplement recommendations for informational purposes only. These recommendations are NOT medical advice. Supplements can interact with medications and may not be appropriate for all individuals.

Before taking any supplements:

• Consult with a qualified healthcare provider, especially if you have any medical conditions
• Inform your doctor about any medications you are currently taking
• Research potential interactions and side effects
• Do not use supplements as a replacement for a balanced diet
• Pregnant or nursing women should consult their doctor before taking any supplements

ShadowPing LLC is not responsible for any adverse effects resulting from supplement use based on recommendations provided by the App.

SubZero Gym offers optional premium features through in-app subscriptions. Purchases are processed by Apple and subject to Apple's terms. Subscriptions renew automatically unless canceled. Refunds are subject to Apple's refund policy.

Subscription tiers (Free, Basic, Pro, Pro+, Elite, Elite+) provide varying levels of access to features including:

• Number of workout plans per month (1 to unlimited)
• Plan duration (2-week to 12-week programs)
• Number of user profiles (1 to 5)
• AI model selection (1 to 13 models from 7 providers)
• Supplement stack recommendations (Pro and above)
• Research citations for nutrition recommendations (Elite and above)

Apple Family Sharing: Pro+ and Elite+ tiers support Apple Family Sharing, allowing up to 6 family members to share the subscription across their devices. Each family member maintains their own separate profiles and data.

All app data is stored locally on your device by default. AI requests are processed through our secure infrastructure but no personal data is stored on external servers. See our Privacy Policy for details.

iCloud Sync: For Pro+ and Elite+ subscribers, profile data, workout history, and generated plans may be synced across your devices using Apple iCloud. iCloud data is stored in your personal Apple account and is subject to Apple's privacy policies and terms. We do not have access to your iCloud data. If your subscription downgrades to a tier without iCloud sync, your data remains stored locally on your device.

Workout plans and supplement recommendations are generated by AI based on your profile information. While we strive for accuracy, AI-generated content may occasionally contain errors, inappropriate exercises, or supplement suggestions that may not be suitable for your individual needs. Always use your judgment and modify workouts as needed for your fitness level and any physical limitations.

AI Providers: Workout plans may be generated using AI providers including Claude (Anthropic), OpenAI (GPT), Google Gemini, Grok (xAI), DeepSeek, Groq, and Perplexity. You can select your preferred AI provider based on your subscription tier. Each provider processes requests according to their respective terms of service and privacy policies.

SubZero Gym integrates with Apple Health (HealthKit) to read and write workout data. This integration is optional and requires your explicit permission. Data shared with Apple Health is subject to Apple's privacy policies. We do not store or transmit your Apple Health data to external servers.

Smart Workout Categories: SubZero Gym intelligently categorizes your workouts when exporting to Apple Health. Mixed cardio and strength workouts are exported as Cross Training, strength-only sessions as Traditional Strength Training, and cardio sessions with their appropriate activity type (Running, Cycling, etc.). This ensures your Apple Health data accurately reflects your training.

Smart AI Features (Pro and above): With your permission, SubZero Gym may read additional HealthKit data including sleep duration, heart rate variability (HRV), and recovery metrics. This data is used to calculate daily readiness scores and provide personalized AI coaching insights. This data is processed locally on your device and through our AI infrastructure but is not stored on external servers.

Journal Integration: SubZero Gym integrates with Apple Journal, allowing you to log workouts as journal entries. This integration is optional and uses Apple's JournalingSuggestions framework.

SubZero Gym uses Apple WorkoutKit to schedule and sync workouts to Apple Watch. This integration is optional and requires your explicit permission. Workout schedules sent to Apple Watch are stored on your devices and are subject to Apple's privacy policies. We do not store or transmit your Apple Watch workout data to external servers.

SubZero Gym allows you to optionally enter nutrition-related information including dietary restrictions, allergies, current medications, and blood work results. This data is stored locally on your device and is only sent to AI providers when generating personalized supplement recommendations. We do not store this data on external servers. This information is provided for personalization purposes only and does not constitute medical advice.

SubZero Gym offers optional on-device AI processing (Basic tier and above) called Yeti AI. Two model tiers are available: Yeti (~877MB, iPhone 12+) and Yeti Pro (~2.0GB, iPhone 14+).

On-device AI features include profile validation, equipment analysis, exercise substitutions, exercise explanations, and Yeti Chat (Beta) for conversational queries about your training data. All on-device AI processing happens entirely on your iPhone with no internet connection required. Your data never leaves your device when using on-device AI features. The downloaded model is stored locally and can be deleted at any time through the app settings.

Voice & Text Commands: Yeti AI accepts 98 voice and text commands across 14 categories including workout control, adjustments, physical state awareness, and information requests. Voice input is processed entirely on-device using Apple's Speech Framework. Voice recordings are not stored or transmitted to any external servers.

Weather Integration: Yeti Chat (Beta) can provide weather-based workout recommendations using Apple WeatherKit. When you ask weather-related questions (e.g., "Should I run outside today?"), your device's current location is used to fetch weather data from Apple's WeatherKit service. Location data is sent only to Apple and is subject to Apple's privacy policies. We do not store or track your location. Weather queries require an internet connection and location permissions.

SubZero Gym allows you to regenerate your workout plan mid-cycle (Pro tier and above) to accommodate changes in circumstances. Regeneration options include adapting for injuries, goal changes, equipment changes, schedule changes, or returning after time away. When regenerating, your completed workout history and progress are preserved. The AI maintains exercise progression patterns across regeneration. A full audit trail of plan regenerations is stored locally with your plan data.

SubZero Gym offers an Apple Watch companion app (Pro tier and above) for workout tracking. The Watch app works in conjunction with the iPhone app and is not a standalone application. Features include set logging, heart rate-based rest recovery detection, voice announcements, haptic feedback, and AI form cues. Heart rate data is collected from the Apple Watch during workouts to provide recovery indicators and is synced to the iPhone app. The Watch app requires watchOS 11 or later.

Watch Complications: SubZero Gym provides four watch face complication styles (Circular, Rectangular, Corner, and Inline) that display real-time workout progress data. Complications show set progress, elapsed time, and workout type. Tapping any complication launches the SubZero Watch app directly.

Instant Workout Access: When you start a workout on iPhone, your Apple Watch receives a notification allowing you to tap and jump directly into the Watch app for tracking.

SubZero Gym uses iOS Live Activities and Dynamic Island (Pro tier and above, iPhone 14 and later) to display real-time workout information on your Lock Screen and Dynamic Island. Information displayed includes workout timer, rest countdown, current exercise, set progress, total volume, and heart rate (when Apple Watch is connected). Live Activities are active only during workouts and end automatically when your workout is completed.

SubZero Gym provides Home Screen and Lock Screen widgets (Pro tier and above) to display fitness data at a glance. Six Home Screen widgets are available: Next Workout, Weekly Progress, Week Schedule, Latest PR, Streak, and Quick Stats. Three Lock Screen widget formats are available: Circular, Rectangular, and Inline. Widget data is shared between the main app and widgets via App Groups (stored locally). Widgets refresh automatically when workouts are completed or plans change. Lock Screen widgets require iOS 16 or later.

Interactive Widget Buttons (Pro and above): Widgets include interactive buttons for quick actions like starting workouts or marking exercises complete.

SubZero Gym integrates with iOS system features (Pro tier and above) including Siri Shortcuts, App Intents, Control Center Controls, and Focus Filters. These integrations allow hands-free control, quick actions from Control Center, and automatic behavior adjustments based on your Focus mode.

SubZero Gym allows you to generate shareable images (Share Cards) displaying your workout achievements, personal records, streaks, and progress stats. These cards are generated locally on your device. You retain ownership of any content you create. By sharing cards on social media or other platforms, you are responsible for compliance with those platforms' terms of service. ShadowPing LLC is not responsible for how third parties may use or display your shared content.

You agree to use SubZero Gym responsibly. Do not attempt to reverse engineer, modify, or exploit the App or its AI systems.

SubZero Gym, its software, artwork, logo, and branding are property of ShadowPing LLC. All rights reserved. You may not copy, modify, distribute, or reverse engineer the App.

We may suspend or terminate access for violations of these Terms. You may stop using the App at any time by uninstalling it from your device.

The App is provided "as is" without warranties of any kind, express or implied. We do not guarantee uninterrupted or error-free operation, or that workout plans or supplement recommendations will achieve specific fitness or health results.

To the maximum extent permitted by law, ShadowPing LLC is not liable for any indirect, incidental, consequential, or punitive damages arising from your use of the App, including but not limited to personal injuries, health issues, adverse reactions to supplements, property damage, or data loss.

SubZero Gym is intended for users 13 years of age and older. Users under 18 should use the App with parental supervision and consent.

These Terms are governed by the laws of the State of Ohio, USA, without regard to conflict of law principles.

We may update these Terms from time to time. Continued use of the App after changes constitutes acceptance of the updated Terms.

ShadowPing LLC (Ohio, USA) — support@subzerogym.app